feat(web/converse): Import repository r/2440

Imports the converse forum software I wrote a few years ago. I want to
clean this up a bit and try using Hotwire with it.

Note: The original repository was AGPL-3.0 licensed. I'm the copyright
holder and have relicensed it to GPL-3.0 in the commit that is being
merged.

Imported from: https://github.com/tazjin/converse

git-subtree-dir: web/converse
git-subtree-mainline: 386afdc794eefd5bcbc47a3fd7b898a07f69f978
git-subtree-split: 09168021e7405f6b83798d0b43aa6e69e744ae87
Change-Id: Ia8b587db5174ef5b3c52910d3d027199150c58e0

54 files changed, 11309 insertions, 0 deletions

diff --git a/web/converse/.gitattributes b/web/converse/.gitattributes
new file mode 100644
index 0000000000..40b467c269
--- /dev/null
+++ b/web/converse/.gitattributes
@@ -0,0 +1 @@
+Cargo.nix linguist-generated=true
diff --git a/web/converse/.gitignore b/web/converse/.gitignore
new file mode 100644
index 0000000000..548206b0b2
--- /dev/null
+++ b/web/converse/.gitignore
@@ -0,0 +1,3 @@
+.envrc
+/target/
+**/*.rs.bk
diff --git a/web/converse/.travis.yml b/web/converse/.travis.yml
new file mode 100644
index 0000000000..2a8d1543c2
--- /dev/null
+++ b/web/converse/.travis.yml
@@ -0,0 +1,2 @@
+language: nix
+sudo: true
diff --git a/web/converse/CODE_OF_CONDUCT.md b/web/converse/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000000..0e46bbedb0
--- /dev/null
+++ b/web/converse/CODE_OF_CONDUCT.md
@@ -0,0 +1,29 @@
+A SERMON ON ETHICS AND LOVE
+===========================
+
+One day Mal-2 asked the messenger spirit Saint Gulik to approach the
+Goddess and request Her presence for some desperate advice. Shortly
+afterwards the radio came on by itself, and an ethereal female Voice
+said **YES?**
+
+"O! Eris! Blessed Mother of Man! Queen of Chaos! Daughter of Discord!
+Concubine of Confusion! O! Exquisite Lady, I beseech You to lift a
+heavy burden from my heart!"
+
+**WHAT BOTHERS YOU, MAL? YOU DON'T SOUND WELL.**
+
+"I am filled with fear and tormented with terrible visions of pain.
+Everywhere people are hurting one another, the planet is rampant with
+injustices, whole societies plunder groups of their own people,
+mothers imprison sons, children perish while brothers war. O, woe."
+
+**WHAT IS THE MATTER WITH THAT, IF IT IS WHAT YOU WANT TO DO?**
+
+"But nobody Wants it! Everybody hates it."
+
+**OH. WELL, THEN *STOP*.**
+
+At which moment She turned herself into an aspirin commercial and left
+The Polyfather stranded alone with his species.
+
+SINISTER DEXTER HAS A BROKEN SPIROMETER.
diff --git a/web/converse/CONTRIBUTING.md b/web/converse/CONTRIBUTING.md
new file mode 100644
index 0000000000..e600aa22dc
--- /dev/null
+++ b/web/converse/CONTRIBUTING.md
@@ -0,0 +1,114 @@
+Contribution Guidelines
+=======================
+
+<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
+**Table of Contents**
+
+- [Contribution Guidelines](#contribution-guidelines)
+    - [Before making a change](#before-making-a-change)
+    - [Commit messages](#commit-messages)
+    - [Commit content](#commit-content)
+    - [Code quality](#code-quality)
+    - [Builds & tests](#builds--tests)
+
+<!-- markdown-toc end -->
+
+This is a loose set of "guidelines" for contributing to my projects.
+Please note that I will not accept any pull requests that don't follow
+these guidelines.
+
+Also consider the [code of conduct](CODE_OF_CONDUCT.md). No really,
+you should.
+
+## Before making a change
+
+Before making a change, consider your motivation for making the
+change. Documentation updates, bug fixes and the like are *always*
+welcome.
+
+When adding a feature you should consider whether it is only useful
+for your particular use-case or whether it is generally applicable for
+other users of the project.
+
+When in doubt - just ask me!
+
+## Commit messages
+
+All commit messages should follow the style-guide used by the [Angular
+project][]. This means for the most part that your commit message
+should be structured like this:
+
+```
+type(scope): Subject line with at most 68 a character length
+
+Body of the commit message with an empty line between subject and
+body. This text should explain what the change does and why it has
+been made, *especially* if it introduces a new feature.
+
+Relevant issues should be mentioned if they exist.
+```
+
+Where `type` can be one of:
+
+* `feat`: A new feature has been introduced
+* `fix`: An issue of some kind has been fixed
+* `docs`: Documentation or comments have been updated
+* `style`: Formatting changes only
+* `refactor`: Hopefully self-explanatory!
+* `test`: Added missing tests / fixed tests
+* `chore`: Maintenance work
+
+And `scope` should refer to some kind of logical grouping inside of
+the project.
+
+Please take a look at the existing commit log for examples.
+
+## Commit content
+
+Multiple changes should be divided into multiple git commits whenever
+possible. Common sense applies.
+
+The fix for a single-line whitespace issue is fine to include in a
+different commit. Introducing a new feature and refactoring
+(unrelated) code in the same commit is not fine.
+
+`git commit -a` is generally **taboo**.
+
+In my experience making "sane" commits becomes *significantly* easier
+as developer tooling is improved. The interface to `git` that I
+recommend is [magit][]. Even if you are not yet an Emacs user, it
+makes sense to install Emacs just to be able to use magit - it is
+really that good.
+
+For staging sane chunks on the command line with only git, consider
+`git add -p`.
+
+## Code quality
+
+This one should go without saying - but please ensure that your code
+quality does not fall below the rest of the project. This is of course
+very subjective, but as an example if you place code that throws away
+errors into a block in which errors are handled properly your change
+will be rejected.
+
+In my experience there is a strong correlation between the visual
+appearance of a code block and its quality. This is a simple way to
+sanity-check your work while squinting and keeping some distance from
+your screen ;-)
+
+## Builds & tests
+
+Most of my projects are built using [Nix][] to avoid "build pollution"
+via the user's environment. If you have Nix installed and are
+contributing to a project that has a `default.nix`, consider using
+`nix-build` to verify that builds work correctly.
+
+If the project has tests, check that they still work before submitting
+your change.
+
+Both of these will usually be covered by Travis CI.
+
+
+[Angular project]: https://gist.github.com/stephenparish/9941e89d80e2bc58a153#format-of-the-commit-message
+[magit]: https://magit.vc/
+[Nix]: https://nixos.org/nix/
diff --git a/web/converse/Cargo.lock b/web/converse/Cargo.lock
new file mode 100644
index 0000000000..6cba76e131
--- /dev/null
+++ b/web/converse/Cargo.lock
@@ -0,0 +1,2407 @@
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diff --git a/web/converse/Cargo.nix b/web/converse/Cargo.nix
new file mode 100644
index 0000000000..5669afd226
--- /dev/null
+++ b/web/converse/Cargo.nix
@@ -0,0 +1,5384 @@
+# Generated by carnix 0.7.2: carnix nix --src .
+{ lib, buildPlatform, buildRustCrate, fetchgit }:
+let kernel = buildPlatform.parsed.kernel.name;
+    abi = buildPlatform.parsed.abi.name;
+    include = includedFiles: src: builtins.filterSource (path: type:
+      lib.lists.any (f:
+        let p = toString (src + ("/" + f)); in
+        (path == p) || (type == "directory" && lib.strings.hasPrefix path p)
+      ) includedFiles
+    ) src;
+    updateFeatures = f: up: functions: builtins.deepSeq f (lib.lists.foldl' (features: fun: fun features) (lib.attrsets.recursiveUpdate f up) functions);
+    mapFeatures = features: map (fun: fun { features = features; });
+    mkFeatures = feat: lib.lists.foldl (features: featureName:
+      if feat.${featureName} or false then
+        [ featureName ] ++ features
+      else
+        features
+    ) [] (builtins.attrNames feat);
+in
+rec {
+  converse = f: converse_0_1_0 { features = converse_0_1_0_features { converse_0_1_0 = f; }; };
+  __all = [ (converse {}) ];
+  actix_0_5_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "actix";
+    version = "0.5.7";
+    authors = [ "Nikolay Kim <fafhrd91@gmail.com>" ];
+    sha256 = "0vvx1r6z66fmpgaq2mhlcjf1p7kg0zzl3q05y6cp9jx53xdal4zz";
+    libPath = "src/lib.rs";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  actix_web_0_6_9_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "actix-web";
+    version = "0.6.9";
+    authors = [ "Nikolay Kim <fafhrd91@gmail.com>" ];
+    sha256 = "11wgyc5ydd47h6zdbcz3swq5qpb020v6j8davswv3fxy0274rqly";
+    libPath = "src/lib.rs";
+    libName = "actix_web";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  actix_derive_0_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "actix_derive";
+    version = "0.2.0";
+    authors = [ "Callym <hi@callym.com>" "Nikolay Kim <fafhrd91@gmail.com>" ];
+    sha256 = "0mh7wmw4kb8vy6pqzhis2y4qqfdz86c1zn4ns4knmvq3rqcjgqpa";
+    procMacro = true;
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  adler32_1_0_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "adler32";
+    version = "1.0.2";
+    authors = [ "Remi Rampin <remirampin@gmail.com>" ];
+    sha256 = "1974q3nysai026zhz24df506cxwi09jdzqksll4h7ibpb5n9g1d4";
+    inherit dependencies buildDependencies features;
+  };
+  aho_corasick_0_6_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "aho-corasick";
+    version = "0.6.4";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "189v919mp6rzzgjp1khpn4zlq8ls81gh43x1lmc8kbkagdlpq888";
+    libName = "aho_corasick";
+    crateBin = [ {  name = "aho-corasick-dot"; } ];
+    inherit dependencies buildDependencies features;
+  };
+  ansi_term_0_11_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "ansi_term";
+    version = "0.11.0";
+    authors = [ "ogham@bsago.me" "Ryan Scheel (Havvy) <ryan.havvy@gmail.com>" "Josh Triplett <josh@joshtriplett.org>" ];
+    sha256 = "08fk0p2xvkqpmz3zlrwnf6l8sj2vngw464rvzspzp31sbgxbwm4v";
+    inherit dependencies buildDependencies features;
+  };
+  antidote_1_0_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "antidote";
+    version = "1.0.0";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "1x2wgaw603jcjwsfvc8s2rpaqjv0aqj8mvws2ahhkvfnwkdf7icw";
+    inherit dependencies buildDependencies features;
+  };
+  arrayvec_0_4_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "arrayvec";
+    version = "0.4.7";
+    authors = [ "bluss" ];
+    sha256 = "0fzgv7z1x1qnyd7j32vdcadk4k9wfx897y06mr3bw1yi52iqf4z4";
+    inherit dependencies buildDependencies features;
+  };
+  askama_0_6_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "askama";
+    version = "0.6.4";
+    authors = [ "Dirkjan Ochtman <dirkjan@ochtman.nl>" ];
+    sha256 = "1l4wr3zj0ihmx5nh19aksngs684iqzg13hfxbxcf4ldwkfbq98g6";
+    inherit dependencies buildDependencies features;
+  };
+  askama_derive_0_6_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "askama_derive";
+    version = "0.6.4";
+    authors = [ "Dirkjan Ochtman <dirkjan@ochtman.nl>" ];
+    sha256 = "0k7vy1bj5lkv2hmrl11iajiv6rp2kilfhancilrifn8kf1788hwj";
+    procMacro = true;
+    inherit dependencies buildDependencies features;
+  };
+  askama_shared_0_6_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "askama_shared";
+    version = "0.6.2";
+    authors = [ "Dirkjan Ochtman <dirkjan@ochtman.nl>" ];
+    sha256 = "1l8hhhs6rjsfdsvlzw7a3jh8a830i4ixzvcmr9d2xfp5097akd4j";
+    inherit dependencies buildDependencies features;
+  };
+  atty_0_2_10_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "atty";
+    version = "0.2.10";
+    authors = [ "softprops <d.tangren@gmail.com>" ];
+    sha256 = "1h26lssj8rwaz0xhwwm5a645r49yly211amfmd243m3m0jl49i2c";
+    inherit dependencies buildDependencies features;
+  };
+  backtrace_0_2_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "backtrace";
+    version = "0.2.3";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" "The Rust Project Developers" ];
+    sha256 = "12bv0zibls8wckz082jnky2ixykhixc7f72n652nd7l3ljlmkzim";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  backtrace_0_3_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "backtrace";
+    version = "0.3.7";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" "The Rust Project Developers" ];
+    sha256 = "00zzcgacv516dlhxkrdw4c8vsx3bwkkdrrzi5pnxrhpd87ambjwn";
+    inherit dependencies buildDependencies features;
+  };
+  backtrace_sys_0_1_16_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "backtrace-sys";
+    version = "0.1.16";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "1cn2c8q3dn06crmnk0p62czkngam4l8nf57wy33nz1y5g25pszwy";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  base64_0_6_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "base64";
+    version = "0.6.0";
+    authors = [ "Alice Maz <alice@alicemaz.com>" "Marshall Pierce <marshall@mpierce.org>" ];
+    sha256 = "0ql1rmczbnww3iszc0pfc6mqa47ravpsdf525vp6s8r32nyzspl5";
+    inherit dependencies buildDependencies features;
+  };
+  base64_0_9_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "base64";
+    version = "0.9.1";
+    authors = [ "Alice Maz <alice@alicemaz.com>" "Marshall Pierce <marshall@mpierce.org>" ];
+    sha256 = "0fnsgkhn6aqbvvgbpcyzy1dbx840g0x5rvxdf82c5pv23knl0j0a";
+    inherit dependencies buildDependencies features;
+  };
+  bitflags_0_9_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "bitflags";
+    version = "0.9.1";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "18h073l5jd88rx4qdr95fjddr9rk79pb1aqnshzdnw16cfmb9rws";
+    inherit dependencies buildDependencies features;
+  };
+  bitflags_1_0_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "bitflags";
+    version = "1.0.3";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "162p4w4h1ad76awq6b5yivmls3d50m9cl27d8g588lsps6g8s5rw";
+    inherit dependencies buildDependencies features;
+  };
+  brotli_sys_0_3_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "brotli-sys";
+    version = "0.3.2";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0b68xckd06a5gvdykimgr5f0f2whrhj0lwqq6scy0viaargqkdnl";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  brotli2_0_3_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "brotli2";
+    version = "0.3.2";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "1daqrhn50rr8k03h7dd2zkjc0qn2c45q6hrmi642fnz0y5rfwm5y";
+    inherit dependencies buildDependencies features;
+  };
+  build_const_0_2_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "build_const";
+    version = "0.2.1";
+    authors = [ "Garrett Berg <vitiral@gmail.com>" ];
+    sha256 = "15249xzi3qlm72p4glxgavwyq70fx2sp4df6ii0sdlrixrrp77pl";
+    inherit dependencies buildDependencies features;
+  };
+  bytecount_0_3_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "bytecount";
+    version = "0.3.1";
+    authors = [ "Andre Bogus <bogusandre@gmail.de>" "Joshua Landau <joshua@landau.ws>" ];
+    sha256 = "09l2hly8vyg1rk4aafg29lif9r6lyrrryz799nxf85cjrzjphgw9";
+    inherit dependencies buildDependencies features;
+  };
+  byteorder_1_2_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "byteorder";
+    version = "1.2.3";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "1xghv5f5rydzsam8lnfqhfk090i8a1knb77ikbs0ik44bvrw2ij3";
+    inherit dependencies buildDependencies features;
+  };
+  bytes_0_4_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "bytes";
+    version = "0.4.7";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "1icr74r099d0c0a2q1pz51182z7911g92h2j60al351kz78dzv3f";
+    inherit dependencies buildDependencies features;
+  };
+  cargo_metadata_0_5_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "cargo_metadata";
+    version = "0.5.4";
+    authors = [ "Oliver Schneider <git-spam-no-reply9815368754983@oli-obk.de>" ];
+    sha256 = "0g45nw8kb2yi78g97y6rf0phxd91ny12gs5qy89jwivaqcpc5gyd";
+    inherit dependencies buildDependencies features;
+  };
+  cc_1_0_15_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "cc";
+    version = "1.0.15";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "1zmcv4zf888byhay2qakqlc9b8snhy5ccfs35zb6flywmlj8f2c0";
+    inherit dependencies buildDependencies features;
+  };
+  cfg_if_0_1_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "cfg-if";
+    version = "0.1.3";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0hphfz5qg40gr5p18gmgy2rzkqj019lii3n0dy3s0a6lnl9106k6";
+    inherit dependencies buildDependencies features;
+  };
+  chrono_0_4_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "chrono";
+    version = "0.4.2";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" "Brandon W Maister <quodlibetor@gmail.com>" ];
+    sha256 = "1zp63v1g56kfjnazmqg8s4gb66l0ra8ggn3gzqbf9sr8d5lnfzak";
+    inherit dependencies buildDependencies features;
+  };
+  clap_2_31_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "clap";
+    version = "2.31.2";
+    authors = [ "Kevin K. <kbknapp@gmail.com>" ];
+    sha256 = "0r24ziw85a8y1sf2l21y4mvv5qan3rjafcshpyfsjfadqfxsij72";
+    inherit dependencies buildDependencies features;
+  };
+  comrak_0_2_12_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "comrak";
+    version = "0.2.12";
+    authors = [ "Ashe Connor <kivikakk@github.com>" ];
+    sha256 = "14n2xpvlncy36ycf53iv26wszv8nd59br5sjlc0b29qjajfa34z4";
+    crateBin = [ {  name = "comrak"; } ];
+    inherit dependencies buildDependencies features;
+  };
+  converse_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "converse";
+    version = "0.1.0";
+    authors = [ "Vincent Ambo <mail@tazj.in>" ];
+    src = ./.;
+    inherit dependencies buildDependencies features;
+  };
+  cookie_0_10_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "cookie";
+    version = "0.10.1";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" "Sergio Benitez <sb@sergio.bz>" ];
+    sha256 = "0sipihjzmipb13i2hzlvzsyljj00cjs7vx1ymslxr9m6kl2y0qpq";
+    inherit dependencies buildDependencies features;
+  };
+  core_foundation_0_2_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "core-foundation";
+    version = "0.2.3";
+    authors = [ "The Servo Project Developers" ];
+    sha256 = "1g0vpya5h2wa0nlz4a74jar6y8z09f0p76zbzfqrm3dbfsrld1pm";
+    inherit dependencies buildDependencies features;
+  };
+  core_foundation_sys_0_2_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "core-foundation-sys";
+    version = "0.2.3";
+    authors = [ "The Servo Project Developers" ];
+    sha256 = "19s0d03294m9s5j8cvy345db3gkhs2y02j5268ap0c6ky5apl53s";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  crc_1_8_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crc";
+    version = "1.8.1";
+    authors = [ "Rui Hu <code@mrhooray.com>" ];
+    sha256 = "00m9jjqrddp3bqyanvyxv0hf6s56bx1wy51vcdcxg4n2jdhg109s";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_channel_0_1_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-channel";
+    version = "0.1.2";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "008xqz8w58sl43fmwpqqf08lp33sjq9gnmbgzw04l6ry7kidwm56";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_deque_0_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-deque";
+    version = "0.2.0";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "1h3n1p1qy45b6388j3svfy1m72xlcx9j9a5y0mww6jz8fmknipnb";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_deque_0_3_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-deque";
+    version = "0.3.1";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "1km0mavyp9ddwb7k7kcdmyryi3bwxf0nmr6jqcpyjzvzmxjlkqap";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_epoch_0_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-epoch";
+    version = "0.2.0";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "05hyrrbmz64z0gz6n9h6jmx7swnhika90h96fcyd83psjwpkap88";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_epoch_0_3_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-epoch";
+    version = "0.3.1";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "1ljrrpvalabi3r2nnpcz7rqkbl2ydmd0mrrr2fv335f7d46xgfxa";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_epoch_0_4_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-epoch";
+    version = "0.4.1";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "134565vkm0h14bk8c3bw0f7n8zzhwl6zi8127zvpa8iglchafn0a";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_utils_0_2_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-utils";
+    version = "0.2.2";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "0jiwzxv0lysjq68yk4bzkygrf69zhdidyw55nxlmimxlm6xv0j4m";
+    inherit dependencies buildDependencies features;
+  };
+  crossbeam_utils_0_3_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "crossbeam-utils";
+    version = "0.3.2";
+    authors = [ "The Crossbeam Project Developers" ];
+    sha256 = "1byx31nkxl48la58571h40ssk94faky26jwz15w40v2gba3v4fql";
+    inherit dependencies buildDependencies features;
+  };
+  dbghelp_sys_0_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "dbghelp-sys";
+    version = "0.2.0";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "0ylpi3bbiy233m57hnisn1df1v0lbl7nsxn34b0anzsgg440hqpq";
+    libName = "dbghelp";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  diesel_1_2_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "diesel";
+    version = "1.2.2";
+    authors = [ "Sean Griffin <sean@seantheprogrammer.com>" ];
+    sha256 = "0bcy779ndq9l2l2vh3a7h1s1s2cw67365vkx4zhxdq22wyb8z90w";
+    inherit dependencies buildDependencies features;
+  };
+  diesel_derives_1_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "diesel_derives";
+    version = "1.2.0";
+    authors = [ "Sean Griffin <sean@seantheprogrammer.com>" ];
+    sha256 = "0ykq7c77zsdsak0r8d384nnca9fglhih6jq66d0b9sws8vjvn4m1";
+    procMacro = true;
+    inherit dependencies buildDependencies features;
+  };
+  dtoa_0_4_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "dtoa";
+    version = "0.4.2";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "1bxsh6fags7nr36vlz07ik2a1rzyipc8x1y30kjk832hf2pzadmw";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_0_2_33_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding";
+    version = "0.2.33";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" ];
+    sha256 = "16ls6avhv5ll28zajl5q1jbiz1g80c4ygnw13zzqmij14wsp5329";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_index_japanese_1_20141219_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding-index-japanese";
+    version = "1.20141219.5";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" ];
+    sha256 = "1pmfaabps0x6v6cd4fbk9ssykhkmc799dma2y78fhk7gvyr5gyl4";
+    libPath = "lib.rs";
+    libName = "encoding_index_japanese";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_index_korean_1_20141219_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding-index-korean";
+    version = "1.20141219.5";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" ];
+    sha256 = "1b756n7gcilkx07y7zjrikcg0b8v8yd6mw8w01ji8sp3k1cabcf2";
+    libPath = "lib.rs";
+    libName = "encoding_index_korean";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_index_simpchinese_1_20141219_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding-index-simpchinese";
+    version = "1.20141219.5";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" ];
+    sha256 = "0rb4xd8cqymhqffqqxdk18mf9n354vs50ar66jrysb1z6ymcvvpy";
+    libPath = "lib.rs";
+    libName = "encoding_index_simpchinese";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_index_singlebyte_1_20141219_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding-index-singlebyte";
+    version = "1.20141219.5";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" ];
+    sha256 = "07df3jrfwfmzi2s352lvcpvy5dqpy2s45d2xx2dz1x7zh3q5284d";
+    libPath = "lib.rs";
+    libName = "encoding_index_singlebyte";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_index_tradchinese_1_20141219_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding-index-tradchinese";
+    version = "1.20141219.5";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" ];
+    sha256 = "0lb12nbv29cy41gx26yz3v4kfi8h1xbn1ppja8szgqi2zm1wlywn";
+    libPath = "lib.rs";
+    libName = "encoding_index_tradchinese";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_index_tests_0_1_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding_index_tests";
+    version = "0.1.4";
+    authors = [ "Kang Seonghoon <public+rust@mearie.org>" ];
+    sha256 = "0z09kwh4z76q00cfr081rgjbnai4s2maq2vk88lgrq9d6bkf93f6";
+    libPath = "index_tests.rs";
+    inherit dependencies buildDependencies features;
+  };
+  encoding_rs_0_7_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "encoding_rs";
+    version = "0.7.2";
+    authors = [ "Henri Sivonen <hsivonen@hsivonen.fi>" ];
+    sha256 = "1c23bi3q4qmi2ci8g7p5j4b4i5abyggvyg6hkl7w4p4r527c9g3q";
+    inherit dependencies buildDependencies features;
+  };
+  entities_1_0_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "entities";
+    version = "1.0.1";
+    authors = [ "Philip Jackson <p-jackson@live.com>" ];
+    sha256 = "1wvhgyl5mbbh3psw7c5w3mli6h87bk78aqap49mhp0654k87zw5g";
+    inherit dependencies buildDependencies features;
+  };
+  env_logger_0_5_10_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "env_logger";
+    version = "0.5.10";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0any21l2x4h4h4ggc6r69k14i57pzqrm1pf89vfm3faxfpa23nhk";
+    inherit dependencies buildDependencies features;
+  };
+  error_chain_0_1_12_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "error-chain";
+    version = "0.1.12";
+    authors = [ "Brian Anderson <banderson@mozilla.com>" "Paul Colomiets <paul@colomiets.name>" "Colin Kiegel <kiegel@gmx.de>" ];
+    sha256 = "0pc1b8zbmim3qhlb0wfpxbvjhpq411rs0l9jzxplyr7j0b0wgbg1";
+    inherit dependencies buildDependencies features;
+  };
+  error_chain_0_8_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "error-chain";
+    version = "0.8.1";
+    authors = [ "Brian Anderson <banderson@mozilla.com>" "Paul Colomiets <paul@colomiets.name>" "Colin Kiegel <kiegel@gmx.de>" "Yamakaky <yamakaky@yamaworld.fr>" ];
+    sha256 = "0jaipqr2l2v84raynz3bvb0vnzysk7515j3mnb9i7g1qqprg2waq";
+    inherit dependencies buildDependencies features;
+  };
+  error_chain_0_11_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "error-chain";
+    version = "0.11.0";
+    authors = [ "Brian Anderson <banderson@mozilla.com>" "Paul Colomiets <paul@colomiets.name>" "Colin Kiegel <kiegel@gmx.de>" "Yamakaky <yamakaky@yamaworld.fr>" ];
+    sha256 = "19nz17q6dzp0mx2jhh9qbj45gkvvgcl7zq9z2ai5a8ihbisfj6d7";
+    inherit dependencies buildDependencies features;
+  };
+  failure_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "failure";
+    version = "0.1.1";
+    authors = [ "Without Boats <boats@mozilla.com>" ];
+    sha256 = "0gf9cmkm9kc163sszgjksqp5pcgj689lnf2104nn4h4is18nhigk";
+    inherit dependencies buildDependencies features;
+  };
+  failure_derive_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "failure_derive";
+    version = "0.1.1";
+    authors = [ "Without Boats <woboats@gmail.com>" ];
+    sha256 = "1w895q4pbyx3rwnhgjwfcayk9ghbi166wc1c3553qh8zkbz52k8i";
+    procMacro = true;
+    inherit dependencies buildDependencies features;
+  };
+  flate2_1_0_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "flate2";
+    version = "1.0.1";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0hi1r0sz8ca750hq9ym6d3n99g6rmmm8m8hadz2v49pfh6jd6svc";
+    inherit dependencies buildDependencies features;
+  };
+  fnv_1_0_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "fnv";
+    version = "1.0.6";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "128mlh23y3gg6ag5h8iiqlcbl59smisdzraqy88ldrf75kbw27ip";
+    libPath = "lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  foreign_types_0_3_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "foreign-types";
+    version = "0.3.2";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "105n8sp2djb1s5lzrw04p7ss3dchr5qa3canmynx396nh3vwm2p8";
+    inherit dependencies buildDependencies features;
+  };
+  foreign_types_shared_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "foreign-types-shared";
+    version = "0.1.1";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0b6cnvqbflws8dxywk4589vgbz80049lz4x1g9dfy4s1ppd3g4z5";
+    inherit dependencies buildDependencies features;
+  };
+  fuchsia_zircon_0_3_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "fuchsia-zircon";
+    version = "0.3.3";
+    authors = [ "Raph Levien <raph@google.com>" ];
+    sha256 = "0jrf4shb1699r4la8z358vri8318w4mdi6qzfqy30p2ymjlca4gk";
+    inherit dependencies buildDependencies features;
+  };
+  fuchsia_zircon_sys_0_3_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "fuchsia-zircon-sys";
+    version = "0.3.3";
+    authors = [ "Raph Levien <raph@google.com>" ];
+    sha256 = "08jp1zxrm9jbrr6l26bjal4dbm8bxfy57ickdgibsqxr1n9j3hf5";
+    inherit dependencies buildDependencies features;
+  };
+  futures_0_1_21_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "futures";
+    version = "0.1.21";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0v4xrgkqx189b3b4lad2z5l9ay261p9412bzcdh1z6agxwhldr40";
+    inherit dependencies buildDependencies features;
+  };
+  futures_cpupool_0_1_8_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "futures-cpupool";
+    version = "0.1.8";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0ficd31n5ljiixy6x0vjglhq4fp0v1p4qzxm3v6ymsrb3z080l5c";
+    inherit dependencies buildDependencies features;
+  };
+  gcc_0_3_54_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "gcc";
+    version = "0.3.54";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "07a5i47r8achc6gxsba3ga17h9gnh4b9a2cak8vjg4hx62aajkr4";
+    inherit dependencies buildDependencies features;
+  };
+  getopts_0_2_17_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "getopts";
+    version = "0.2.17";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "1rifkxn7njr2w1dsa29hrm26ywgcg8gv1ms00g3vs5mjiabxk0jv";
+    inherit dependencies buildDependencies features;
+  };
+  glob_0_2_11_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "glob";
+    version = "0.2.11";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "104389jjxs8r2f5cc9p0axhjmndgln60ih5x4f00ccgg9d3zarlf";
+    inherit dependencies buildDependencies features;
+  };
+  h2_0_1_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "h2";
+    version = "0.1.7";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "03zn4gx31w1jgbf408dmg71c6hiy71vr9s017lxhyjydg6dfzkac";
+    inherit dependencies buildDependencies features;
+  };
+  hostname_0_1_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "hostname";
+    version = "0.1.4";
+    authors = [ "fengcen <fengcen.love@gmail.com>" ];
+    sha256 = "1wfz2afh9xjd5rdxgyrhvhl6z1vvdch5nnd7miw2pi3i90fw4r1h";
+    libPath = "src/lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  http_0_1_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "http";
+    version = "0.1.5";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" "Carl Lerche <me@carllerche.com>" "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "07p5q6h45r0hlnd6vg344iy72jk7xphzf6p38gb4fhb9iibnwn08";
+    inherit dependencies buildDependencies features;
+  };
+  http_range_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "http-range";
+    version = "0.1.1";
+    authors = [ "Luka Zakrajšek <luka@bancek.net>" ];
+    sha256 = "1zl43iw110ybbl9g24jhwylqbwgwm25vpv9m47sfwy2ajaqb7b3g";
+    inherit dependencies buildDependencies features;
+  };
+  httparse_1_2_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "httparse";
+    version = "1.2.4";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "169grgxpsq0jaa2fk913z692a6qi8c2n1kypsay124b37720d8ll";
+    inherit dependencies buildDependencies features;
+  };
+  humantime_1_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "humantime";
+    version = "1.1.1";
+    authors = [ "Paul Colomiets <paul@colomiets.name>" ];
+    sha256 = "1lzdfsfzdikcp1qb6wcdvnsdv16pmzr7p7cv171vnbnyz2lrwbgn";
+    libPath = "src/lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  hyper_0_11_27_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "hyper";
+    version = "0.11.27";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "0q5as4lhvh31bzk4qm7j84snrmxyxyaqk040rfk72b42dn98mryi";
+    inherit dependencies buildDependencies features;
+  };
+  hyper_tls_0_1_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "hyper-tls";
+    version = "0.1.3";
+    authors = [ "Sean McArthur <sean.monstar@gmail.com>" ];
+    sha256 = "1dr5arj79pdyz9f2jggqmna1qpc578f9pdgsf2ana5amjpsp0j89";
+    inherit dependencies buildDependencies features;
+  };
+  idna_0_1_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "idna";
+    version = "0.1.4";
+    authors = [ "The rust-url developers" ];
+    sha256 = "15j44qgjx1skwg9i7f4cm36ni4n99b1ayx23yxx7axxcw8vjf336";
+    inherit dependencies buildDependencies features;
+  };
+  indexmap_1_0_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "indexmap";
+    version = "1.0.1";
+    authors = [ "bluss" "Josh Stone <cuviper@gmail.com>" ];
+    sha256 = "10ak26zp3i5iyb03l99312q66jl20qs45cm5jnghm9ymdhspw3r4";
+    inherit dependencies buildDependencies features;
+  };
+  iovec_0_1_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "iovec";
+    version = "0.1.2";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0vjymmb7wj4v4kza5jjn48fcdb85j3k37y7msjl3ifz0p9yiyp2r";
+    inherit dependencies buildDependencies features;
+  };
+  ipconfig_0_1_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "ipconfig";
+    version = "0.1.6";
+    authors = [ "Liran Ringel <liranringel@gmail.com>" ];
+    sha256 = "1jax0paxr9m2qfmc5l386d65m2g2wyzy077wzmbryv14d6dncfp8";
+    inherit dependencies buildDependencies features;
+  };
+  itoa_0_4_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "itoa";
+    version = "0.4.1";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "1jyrsmrm5q4r2ipmq5hvvkqg0mgnlbk44lm7gr0v9ymvbrh2gbij";
+    inherit dependencies buildDependencies features;
+  };
+  kernel32_sys_0_2_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "kernel32-sys";
+    version = "0.2.2";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "1lrw1hbinyvr6cp28g60z97w32w8vsk6pahk64pmrv2fmby8srfj";
+    libName = "kernel32";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  language_tags_0_2_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "language-tags";
+    version = "0.2.2";
+    authors = [ "Pyfisch <pyfisch@gmail.com>" ];
+    sha256 = "1zkrdzsqzzc7509kd7nngdwrp461glm2g09kqpzaqksp82frjdvy";
+    inherit dependencies buildDependencies features;
+  };
+  lazy_static_0_2_11_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "lazy_static";
+    version = "0.2.11";
+    authors = [ "Marvin Löbel <loebel.marvin@gmail.com>" ];
+    sha256 = "1x6871cvpy5b96yv4c7jvpq316fp5d4609s9py7qk6cd6x9k34vm";
+    inherit dependencies buildDependencies features;
+  };
+  lazy_static_1_0_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "lazy_static";
+    version = "1.0.0";
+    authors = [ "Marvin Löbel <loebel.marvin@gmail.com>" ];
+    sha256 = "0wfvqyr2nvx2mbsrscg5y7gfa9skhb8p72ayanl8vl49pw24v4fh";
+    inherit dependencies buildDependencies features;
+  };
+  lazycell_0_6_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "lazycell";
+    version = "0.6.0";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" "Nikita Pekin <contact@nikitapek.in>" ];
+    sha256 = "1ax148clinbvp6alxcih8s5i2bg3mc5mi69n3hvzvzbwlm6k532r";
+    inherit dependencies buildDependencies features;
+  };
+  libc_0_2_41_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "libc";
+    version = "0.2.41";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "00fj3gi8x3zvslbnisw8xfgmid3k6nvgjg8i0lly50cf3l8x0s00";
+    inherit dependencies buildDependencies features;
+  };
+  libflate_0_1_14_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "libflate";
+    version = "0.1.14";
+    authors = [ "Takeru Ohta <phjgt308@gmail.com>" ];
+    sha256 = "03zq769bfffg3iyp2vkkjsmkskabrxiyh5khzppyyngm8w9xpdsc";
+    inherit dependencies buildDependencies features;
+  };
+  linked_hash_map_0_4_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "linked-hash-map";
+    version = "0.4.2";
+    authors = [ "Stepan Koltsov <stepan.koltsov@gmail.com>" "Andrew Paseltiner <apaseltiner@gmail.com>" ];
+    sha256 = "04da208h6jb69f46j37jnvsw2i1wqplglp4d61csqcrhh83avbgl";
+    inherit dependencies buildDependencies features;
+  };
+  log_0_3_9_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "log";
+    version = "0.3.9";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "19i9pwp7lhaqgzangcpw00kc3zsgcqcx84crv07xgz3v7d3kvfa2";
+    inherit dependencies buildDependencies features;
+  };
+  log_0_4_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "log";
+    version = "0.4.1";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "01vm8yy3wngvyj6qp1x3xpcb4xq7v67yn9l7fsma8kz28mliz90d";
+    inherit dependencies buildDependencies features;
+  };
+  lru_cache_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "lru-cache";
+    version = "0.1.1";
+    authors = [ "Stepan Koltsov <stepan.koltsov@gmail.com>" ];
+    sha256 = "1hl6kii1g54sq649gnscv858mmw7a02xj081l4vcgvrswdi2z8fw";
+    inherit dependencies buildDependencies features;
+  };
+  matches_0_1_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "matches";
+    version = "0.1.6";
+    authors = [ "Simon Sapin <simon.sapin@exyr.org>" ];
+    sha256 = "1zlrqlbvzxdil8z8ial2ihvxjwvlvg3g8dr0lcdpsjclkclasjan";
+    libPath = "lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  md5_0_3_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "md5";
+    version = "0.3.7";
+    authors = [ "Ivan Ukhov <ivan.ukhov@gmail.com>" "Kamal Ahmad <shibe@openmailbox.org>" "Konstantin Stepanov <milezv@gmail.com>" "Lukas Kalbertodt <lukas.kalbertodt@gmail.com>" "Nathan Musoke <nathan.musoke@gmail.com>" "Tony Arcieri <bascule@gmail.com>" ];
+    sha256 = "1ga55k7asxln553m89ccka2hnp5gkvacxl98r3nmx4d9mzvwn352";
+    inherit dependencies buildDependencies features;
+  };
+  memchr_1_0_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "memchr";
+    version = "1.0.2";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" "bluss" ];
+    sha256 = "0dfb8ifl9nrc9kzgd5z91q6qg87sh285q1ih7xgrsglmqfav9lg7";
+    inherit dependencies buildDependencies features;
+  };
+  memchr_2_0_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "memchr";
+    version = "2.0.1";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" "bluss" ];
+    sha256 = "0ls2y47rjwapjdax6bp974gdp06ggm1v8d1h69wyydmh1nhgm5gr";
+    inherit dependencies buildDependencies features;
+  };
+  memoffset_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "memoffset";
+    version = "0.1.0";
+    authors = [ "Gilad Naaman <gilad.naaman@gmail.com>" ];
+    sha256 = "1jq5vcfwqwxl709985srmsxs229da2hq3ab11fx3abbx1bpxcgx1";
+    inherit dependencies buildDependencies features;
+  };
+  memoffset_0_2_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "memoffset";
+    version = "0.2.1";
+    authors = [ "Gilad Naaman <gilad.naaman@gmail.com>" ];
+    sha256 = "00vym01jk9slibq2nsiilgffp7n6k52a4q3n4dqp0xf5kzxvffcf";
+    inherit dependencies buildDependencies features;
+  };
+  mime_0_3_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "mime";
+    version = "0.3.7";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "1hvhza86jqrzwgin3mi08c6l8fqvxlpnwxj2yzv8zyxkqa70h9ax";
+    inherit dependencies buildDependencies features;
+  };
+  mime_guess_2_0_0_alpha_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "mime_guess";
+    version = "2.0.0-alpha.4";
+    authors = [ "Austin Bonander <austin.bonander@gmail.com>" ];
+    sha256 = "1kz8j1hb4azgyzcs6bnrrygv0ykjp170llri0is031q01vi7fgnh";
+    inherit dependencies buildDependencies features;
+  };
+  miniz_sys_0_1_10_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "miniz-sys";
+    version = "0.1.10";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "11vg6phafxil87nbxgrlhcx5hjr3145wsbwwkfmibvnmzxfdmvln";
+    libPath = "lib.rs";
+    libName = "miniz_sys";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  mio_0_6_14_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "mio";
+    version = "0.6.14";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0zws9p0d734qps4wdv47d32mmpb85caf9l2arwhxc7pslqk4icap";
+    inherit dependencies buildDependencies features;
+  };
+  mio_uds_0_6_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "mio-uds";
+    version = "0.6.6";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "1428ywzd30ayagqmagmzslzi70d91mj402wp4mw1mz1yhvjrj9v8";
+    inherit dependencies buildDependencies features;
+  };
+  miow_0_2_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "miow";
+    version = "0.2.1";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "14f8zkc6ix7mkyis1vsqnim8m29b6l55abkba3p2yz7j1ibcvrl0";
+    inherit dependencies buildDependencies features;
+  };
+  native_tls_0_1_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "native-tls";
+    version = "0.1.5";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "11f75qmbny5pnn6zp0vlvadrvc9ph9qsxiyn4n6q02xyd93pxxlf";
+    inherit dependencies buildDependencies features;
+  };
+  net2_0_2_32_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "net2";
+    version = "0.2.32";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "15q3il71qaqrwz8q1nz0jyw5q4fl0vrkajgaj909zradxsxv1mcq";
+    inherit dependencies buildDependencies features;
+  };
+  nodrop_0_1_12_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "nodrop";
+    version = "0.1.12";
+    authors = [ "bluss" ];
+    sha256 = "1b9rxvdg8061gxjc239l9slndf0ds3m6fy2sf3gs8f9kknqgl49d";
+    inherit dependencies buildDependencies features;
+  };
+  nom_3_2_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "nom";
+    version = "3.2.1";
+    authors = [ "contact@geoffroycouprie.com" ];
+    sha256 = "1vcllxrz9hdw6j25kn020ka3psz1vkaqh1hm3yfak2240zrxgi07";
+    inherit dependencies buildDependencies features;
+  };
+  num_integer_0_1_38_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "num-integer";
+    version = "0.1.38";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0xcyvsg43zrmaanf546l67mz816g5jigxi8818rx5y95xid722yy";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  num_traits_0_2_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "num-traits";
+    version = "0.2.4";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0j0n4lcxbqq8q9v2qcyybz6aqxvmghzl5q2p19ds0c8fl5wviqmj";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  num_cpus_1_8_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "num_cpus";
+    version = "1.8.0";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "1y6qnd9r8ga6y8mvlabdrr73nc8cshjjlzbvnanzyj9b8zzkfwk2";
+    inherit dependencies buildDependencies features;
+  };
+  openssl_0_9_24_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "openssl";
+    version = "0.9.24";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0wzm3c11g3ndaqyzq36mcdcm1q4a8pmsyi33ibybhjz28g2z0f79";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  openssl_sys_0_9_31_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "openssl-sys";
+    version = "0.9.31";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0jqc6ij157z4xfsdrcg4ska7v9i6dlxyl4lnl4di5v716vlxc40c";
+    build = "build/main.rs";
+    inherit dependencies buildDependencies features;
+  };
+  owning_ref_0_3_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "owning_ref";
+    version = "0.3.3";
+    authors = [ "Marvin Löbel <loebel.marvin@gmail.com>" ];
+    sha256 = "13ivn0ydc0hf957ix0f5si9nnplzzykbr70hni1qz9m19i9kvmrh";
+    inherit dependencies buildDependencies features;
+  };
+  parking_lot_0_4_8_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "parking_lot";
+    version = "0.4.8";
+    authors = [ "Amanieu d'Antras <amanieu@gmail.com>" ];
+    sha256 = "0qrb2f0azglbsx7k3skgnc7mmv9z9spnqgk1m450g91r94nlklqi";
+    inherit dependencies buildDependencies features;
+  };
+  parking_lot_core_0_2_14_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "parking_lot_core";
+    version = "0.2.14";
+    authors = [ "Amanieu d'Antras <amanieu@gmail.com>" ];
+    sha256 = "0giypb8ckkpi34p14nfk4b19c7przj4jxs95gs7x2v5ncmi0y286";
+    inherit dependencies buildDependencies features;
+  };
+  percent_encoding_1_0_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "percent-encoding";
+    version = "1.0.1";
+    authors = [ "The rust-url developers" ];
+    sha256 = "04ahrp7aw4ip7fmadb0bknybmkfav0kk0gw4ps3ydq5w6hr0ib5i";
+    libPath = "lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  pest_1_0_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "pest";
+    version = "1.0.6";
+    authors = [ "Dragoș Tiselice <dragostiselice@gmail.com>" ];
+    sha256 = "07r7aq8fni6ycjn3mlpam95pd4hlwylqqprv62ni488pjbkhcp5d";
+    inherit dependencies buildDependencies features;
+  };
+  pest_derive_1_0_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "pest_derive";
+    version = "1.0.7";
+    authors = [ "Dragoș Tiselice <dragostiselice@gmail.com>" ];
+    sha256 = "1jmw7ai3adwrp81ygs2l9i9fqm33b0m87j6rwcn3rvis4gg12kyc";
+    procMacro = true;
+    inherit dependencies buildDependencies features;
+  };
+  phf_0_7_22_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "phf";
+    version = "0.7.22";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0b58l863rhmqyqsfj2d89nmdzc21g9yvvvq1m4c3a615zpcykb3i";
+    libPath = "src/lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  phf_codegen_0_7_22_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "phf_codegen";
+    version = "0.7.22";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0k8yx4gr9m6cfrvh21s6bhnh1azz13j4xih88bvm06r6blfl89fs";
+    inherit dependencies buildDependencies features;
+  };
+  phf_generator_0_7_22_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "phf_generator";
+    version = "0.7.22";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "093gla320qb6rbk8z7wqqxl79zrh874sa7sxir31q2p7mrw4b70k";
+    inherit dependencies buildDependencies features;
+  };
+  phf_shared_0_7_22_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "phf_shared";
+    version = "0.7.22";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0ij9flicfi0ab5vpzdwbizpdyxhk891qxa8nxsqlv4sg4abqang6";
+    libPath = "src/lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  pkg_config_0_3_11_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "pkg-config";
+    version = "0.3.11";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "177kbs465skvzmb2d9bh7aa5lqm0npfig12awcbd34c6k6nlyr5h";
+    inherit dependencies buildDependencies features;
+  };
+  pq_sys_0_4_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "pq-sys";
+    version = "0.4.4";
+    authors = [ "Sean Griffin <sean@seantheprogrammer.com>" ];
+    sha256 = "1iqgs12mzx711ab1idiq4ryj27f8srwh83syj0ahvmbp5b8szggg";
+    libName = "pq_sys";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  proc_macro2_0_2_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "proc-macro2";
+    version = "0.2.3";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "1y47qagi1r1f13b4b66xagr3dn9hjlvba7i6f5mcb77qhkn8yg9c";
+    inherit dependencies buildDependencies features;
+  };
+  proc_macro2_0_3_8_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "proc-macro2";
+    version = "0.3.8";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0ixnavxcd6sk1861hjgnfxly7qgq4ch1iplsx0nclvjjkwg39qdc";
+    inherit dependencies buildDependencies features;
+  };
+  proc_macro2_0_4_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "proc-macro2";
+    version = "0.4.3";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0p713czp1039fhrw5cp67hw4f5wg492fsqascfqib5rgmrdimgwz";
+    inherit dependencies buildDependencies features;
+  };
+  pulldown_cmark_0_1_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "pulldown-cmark";
+    version = "0.1.2";
+    authors = [ "Raph Levien <raph@google.com>" ];
+    sha256 = "0imc6m2bxk4j8y5qfp9x9sjnbrz7cz4i7irv4dfqjp4cgblmg5l8";
+    crateBin = [ {  name = "pulldown-cmark"; } ];
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  quick_error_1_2_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "quick-error";
+    version = "1.2.1";
+    authors = [ "Paul Colomiets <paul@colomiets.name>" "Colin Kiegel <kiegel@gmx.de>" ];
+    sha256 = "0vq41csw68ynaq2fy5dvldh4lx7pnbw6pr332kv5rvrz4pz0jnq6";
+    inherit dependencies buildDependencies features;
+  };
+  quote_0_3_15_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "quote";
+    version = "0.3.15";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "09il61jv4kd1360spaj46qwyl21fv1qz18fsv2jra8wdnlgl5jsg";
+    inherit dependencies buildDependencies features;
+  };
+  quote_0_4_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "quote";
+    version = "0.4.2";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "0rzka356p113f9hdcdc8ha78qar3qd6jpap9wnf5dza9hfs2k4bc";
+    inherit dependencies buildDependencies features;
+  };
+  quote_0_5_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "quote";
+    version = "0.5.2";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "062cnp12j09x0z0nj4j5pfh26h35zlrks07asxgqhfhcym1ba595";
+    inherit dependencies buildDependencies features;
+  };
+  quote_0_6_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "quote";
+    version = "0.6.2";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "077sxhymzf5px0xp23mpjbmamrrjmhvavj8xrlrcj64md9wrci1s";
+    inherit dependencies buildDependencies features;
+  };
+  r2d2_0_8_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "r2d2";
+    version = "0.8.2";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "1m8cvw9gpc5r922alyha2qq9nl79q3ldsjk1qwax36zrca0akvdi";
+    inherit dependencies buildDependencies features;
+  };
+  rand_0_3_22_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "rand";
+    version = "0.3.22";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0wrj12acx7l4hr7ag3nz8b50yhp8ancyq988bzmnnsxln67rsys0";
+    inherit dependencies buildDependencies features;
+  };
+  rand_0_4_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "rand";
+    version = "0.4.2";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0h8pkg23wb67i8904sm76iyr1jlmhklb85vbpz9c9191a24xzkfm";
+    inherit dependencies buildDependencies features;
+  };
+  rayon_0_8_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "rayon";
+    version = "0.8.2";
+    authors = [ "Niko Matsakis <niko@alum.mit.edu>" "Josh Stone <cuviper@gmail.com>" ];
+    sha256 = "0d0mddg1k75hb9138pn8lysy2095jijrinskqbpgfr73s0jx6dq8";
+    inherit dependencies buildDependencies features;
+  };
+  rayon_core_1_4_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "rayon-core";
+    version = "1.4.0";
+    authors = [ "Niko Matsakis <niko@alum.mit.edu>" "Josh Stone <cuviper@gmail.com>" ];
+    sha256 = "1gmg5fmgvhzks7b05g3ms7x8h1xxqnfkg28wvhzwpdzjljcbnr23";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  redox_syscall_0_1_38_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "redox_syscall";
+    version = "0.1.38";
+    authors = [ "Jeremy Soller <jackpot51@gmail.com>" ];
+    sha256 = "09giwh6n37sya45g9b2k7svmm42xh8bfrnab3g51qwm1czfz5xbx";
+    libName = "syscall";
+    inherit dependencies buildDependencies features;
+  };
+  redox_termios_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "redox_termios";
+    version = "0.1.1";
+    authors = [ "Jeremy Soller <jackpot51@gmail.com>" ];
+    sha256 = "04s6yyzjca552hdaqlvqhp3vw0zqbc304md5czyd3axh56iry8wh";
+    libPath = "src/lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  regex_0_2_11_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "regex";
+    version = "0.2.11";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0r50cymxdqp0fv1dxd22mjr6y32q450nwacd279p9s7lh0cafijj";
+    inherit dependencies buildDependencies features;
+  };
+  regex_1_0_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "regex";
+    version = "1.0.0";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "1wynl7jmf6l2fnsayw1bzfh7km4wwqnqfpi8anj7wbhdk17i6j6b";
+    inherit dependencies buildDependencies features;
+  };
+  regex_syntax_0_5_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "regex-syntax";
+    version = "0.5.6";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "10vf3r34bgjnbrnqd5aszn35bjvm8insw498l1vjy8zx5yms3427";
+    inherit dependencies buildDependencies features;
+  };
+  regex_syntax_0_6_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "regex-syntax";
+    version = "0.6.0";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "1zlaq3y1zbiqilxbh0471bizcs4p14b58nqr815w3ssyam169cy6";
+    inherit dependencies buildDependencies features;
+  };
+  relay_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "relay";
+    version = "0.1.1";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "16csfaslbmj25iaxs88p8wcfh2zfpkh9isg9adid0nxjxvknh07r";
+    inherit dependencies buildDependencies features;
+  };
+  remove_dir_all_0_5_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "remove_dir_all";
+    version = "0.5.1";
+    authors = [ "Aaronepower <theaaronepower@gmail.com>" ];
+    sha256 = "1chx3yvfbj46xjz4bzsvps208l46hfbcy0sm98gpiya454n4rrl7";
+    inherit dependencies buildDependencies features;
+  };
+  reqwest_0_8_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "reqwest";
+    version = "0.8.5";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "1wrrv3kwh0pm5yzajf986z21pyf48vxskvn7pflzhrm9y11kalnf";
+    inherit dependencies buildDependencies features;
+  };
+  resolv_conf_0_6_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "resolv-conf";
+    version = "0.6.0";
+    authors = [ "paul@colomiets.name" ];
+    sha256 = "11aslgks1zdwwx5nj6fmrnigyvphgk0chd8isz4zwb3pik1jjvc0";
+    libPath = "src/lib.rs";
+    libName = "resolv_conf";
+    inherit dependencies buildDependencies features;
+  };
+  ring_0_12_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "ring";
+    version = "0.12.1";
+    authors = [ "Brian Smith <brian@briansmith.org>" ];
+    sha256 = "1i47apwkpa0wz9fwp4iqf0xks95b9nmhhlgvk5fsgbg0aphhw0p7";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  rustc_demangle_0_1_8_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "rustc-demangle";
+    version = "0.1.8";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0xn5l86qfwngmdsjbglj30wh37zplvch96jl9raysl3k06gkkv3c";
+    inherit dependencies buildDependencies features;
+  };
+  safemem_0_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "safemem";
+    version = "0.2.0";
+    authors = [ "Austin Bonander <austin.bonander@gmail.com>" ];
+    sha256 = "058m251q202n479ip1h6s91yw3plg66vsk5mpaflssn6rs5hijdm";
+    inherit dependencies buildDependencies features;
+  };
+  same_file_1_0_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "same-file";
+    version = "1.0.2";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "1xjj93345qz4dqk1qwlah98dkqrbfvrg7i3hcm3dkjygjqdid2h7";
+    inherit dependencies buildDependencies features;
+  };
+  schannel_0_1_12_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "schannel";
+    version = "0.1.12";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" "Steffen Butzer <steffen.butzer@outlook.com>" ];
+    sha256 = "1lqdzx8d4rql8ah9w760syvrbbyp26s9cgidvrh34h0hjglja42d";
+    inherit dependencies buildDependencies features;
+  };
+  scheduled_thread_pool_0_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "scheduled-thread-pool";
+    version = "0.2.0";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0x8jxh3l4irj5hm7rwfwmfd0iazcpvcfvnqbsngrrn3dmzpy0ig9";
+    inherit dependencies buildDependencies features;
+  };
+  scoped_tls_0_1_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "scoped-tls";
+    version = "0.1.2";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0nblksgki698cqsclsnd6f1pq4yy34350dn2slaah9dlmx9z5xla";
+    inherit dependencies buildDependencies features;
+  };
+  scopeguard_0_3_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "scopeguard";
+    version = "0.3.3";
+    authors = [ "bluss" ];
+    sha256 = "0i1l013csrqzfz6c68pr5pi01hg5v5yahq8fsdmaxy6p8ygsjf3r";
+    inherit dependencies buildDependencies features;
+  };
+  security_framework_0_1_16_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "security-framework";
+    version = "0.1.16";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "1kxczsaj8gz4922jl5af2gkxh71rasb6khaf3dp7ldlnw9qf2sbm";
+    inherit dependencies buildDependencies features;
+  };
+  security_framework_sys_0_1_16_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "security-framework-sys";
+    version = "0.1.16";
+    authors = [ "Steven Fackler <sfackler@gmail.com>" ];
+    sha256 = "0ai2pivdr5fyc7czbkpcrwap0imyy0r8ndarrl3n5kiv0jha1js3";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  semver_0_9_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "semver";
+    version = "0.9.0";
+    authors = [ "Steve Klabnik <steve@steveklabnik.com>" "The Rust Project Developers" ];
+    sha256 = "0azak2lb2wc36s3x15az886kck7rpnksrw14lalm157rg9sc9z63";
+    inherit dependencies buildDependencies features;
+  };
+  semver_parser_0_7_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "semver-parser";
+    version = "0.7.0";
+    authors = [ "Steve Klabnik <steve@steveklabnik.com>" ];
+    sha256 = "1da66c8413yakx0y15k8c055yna5lyb6fr0fw9318kdwkrk5k12h";
+    inherit dependencies buildDependencies features;
+  };
+  serde_1_0_59_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "serde";
+    version = "1.0.59";
+    authors = [ "Erick Tryzelaar <erick.tryzelaar@gmail.com>" "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "03izzw5514vqh2d1h50z8rhnrjx8wh3g8kxb959jimz1y8284w7s";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  serde_derive_1_0_59_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "serde_derive";
+    version = "1.0.59";
+    authors = [ "Erick Tryzelaar <erick.tryzelaar@gmail.com>" "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "1izifndfm46pj4spa8xqhwrjbpj0j4sk9012q413dhs55daln320";
+    procMacro = true;
+    inherit dependencies buildDependencies features;
+  };
+  serde_json_1_0_17_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "serde_json";
+    version = "1.0.17";
+    authors = [ "Erick Tryzelaar <erick.tryzelaar@gmail.com>" "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "1q4660h8yqq5y3wkpqfzwmyvncfb2z7qqxblngs4jfi1sndi2zlz";
+    inherit dependencies buildDependencies features;
+  };
+  serde_urlencoded_0_5_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "serde_urlencoded";
+    version = "0.5.2";
+    authors = [ "Anthony Ramine <n.oxyde@gmail.com>" ];
+    sha256 = "0m5pigng0665qrk4ii1z84pb4lchbsswhgb863yglljskmm056m0";
+    inherit dependencies buildDependencies features;
+  };
+  sha1_0_6_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "sha1";
+    version = "0.6.0";
+    authors = [ "Armin Ronacher <armin.ronacher@active-4.com>" ];
+    sha256 = "12cp2b8f3hbwhfpnv1j1afl285xxmmbxh9w4npzvwbdh7xfyww8v";
+    inherit dependencies buildDependencies features;
+  };
+  siphasher_0_2_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "siphasher";
+    version = "0.2.2";
+    authors = [ "Frank Denis <github@pureftpd.org>" ];
+    sha256 = "0iyx7nlzfny9ly1634a6zcq0yvrinhxhypwas4p8ry3zqnn76qqr";
+    inherit dependencies buildDependencies features;
+  };
+  skeptic_0_13_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "skeptic";
+    version = "0.13.3";
+    authors = [ "Brian Anderson <banderson@mozilla.com>" "Michał Budzyński <budziq@gmail.com>" ];
+    sha256 = "0zfxk41bqby451wd3fr0mnbq0q6l8f7gzp0n96ccgjcvh2nlcnrj";
+    libPath = "lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  slab_0_3_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "slab";
+    version = "0.3.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0y6lhjggksh57hyfd3l6p9wgv5nhvw9c6djrysq7jnalz8fih21k";
+    inherit dependencies buildDependencies features;
+  };
+  slab_0_4_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "slab";
+    version = "0.4.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "1qy2vkgwqgj5z4ygdkh040n9yh1vz80v5flxb1xrvw3i4wxs7yx0";
+    inherit dependencies buildDependencies features;
+  };
+  smallvec_0_2_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "smallvec";
+    version = "0.2.1";
+    authors = [ "Simon Sapin <simon.sapin@exyr.org>" ];
+    sha256 = "0rnsll9af52bpjngz0067dpm1ndqmh76i64a58fc118l4lvnjxw2";
+    libPath = "lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  smallvec_0_6_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "smallvec";
+    version = "0.6.1";
+    authors = [ "Simon Sapin <simon.sapin@exyr.org>" ];
+    sha256 = "16m07xh67xcdpwjkbzbv9d7visxmz4fb4a8jfcrsrf333w7vkl1g";
+    libPath = "lib.rs";
+    inherit dependencies buildDependencies features;
+  };
+  socket2_0_3_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "socket2";
+    version = "0.3.5";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "0bi6z6qvra16rwm3lk7xz4aakvcmmak6fpdmra1v7ccp40bss0kf";
+    inherit dependencies buildDependencies features;
+  };
+  stable_deref_trait_1_0_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "stable_deref_trait";
+    version = "1.0.0";
+    authors = [ "Robert Grosse <n210241048576@gmail.com>" ];
+    sha256 = "0ya5fms9qdwkd52d3a111w4vcz18j4rbfx4p88z44116cqd6cczr";
+    inherit dependencies buildDependencies features;
+  };
+  string_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "string";
+    version = "0.1.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0pca6c4kf47izwapzz9bzmq7sb6hbzn26xxdfi8ld7mqf0dqg1z7";
+    inherit dependencies buildDependencies features;
+  };
+  strsim_0_7_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "strsim";
+    version = "0.7.0";
+    authors = [ "Danny Guo <dannyguo91@gmail.com>" ];
+    sha256 = "0fy0k5f2705z73mb3x9459bpcvrx4ky8jpr4zikcbiwan4bnm0iv";
+    inherit dependencies buildDependencies features;
+  };
+  syn_0_11_11_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "syn";
+    version = "0.11.11";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "0yw8ng7x1dn5a6ykg0ib49y7r9nhzgpiq2989rqdp7rdz3n85502";
+    inherit dependencies buildDependencies features;
+  };
+  syn_0_12_15_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "syn";
+    version = "0.12.15";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "0kkzav72yy0idzbh9zcg92dam3785xzrbxjjp8vxcis9z2zd6b13";
+    inherit dependencies buildDependencies features;
+  };
+  syn_0_13_11_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "syn";
+    version = "0.13.11";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "06ybhxbyv8zshli47w0ihcnix74d6ss5yic3imns895q8pqgia2k";
+    inherit dependencies buildDependencies features;
+  };
+  syn_0_14_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "syn";
+    version = "0.14.0";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "1h62k6ix5mga8b6xffc3f114fa34wsyq1wxakx6q84j1z9s7fbkd";
+    inherit dependencies buildDependencies features;
+  };
+  synom_0_11_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "synom";
+    version = "0.11.3";
+    authors = [ "David Tolnay <dtolnay@gmail.com>" ];
+    sha256 = "1l6d1s9qjfp6ng2s2z8219igvlv7gyk8gby97sdykqc1r93d8rhc";
+    inherit dependencies buildDependencies features;
+  };
+  synstructure_0_6_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "synstructure";
+    version = "0.6.1";
+    authors = [ "Michael Layzell <michael@thelayzells.com>" ];
+    sha256 = "1xnyw58va9zcqi4vvpnmpllacdj2a0mvy0cbd698izmr4qs92xlk";
+    inherit dependencies buildDependencies features;
+  };
+  take_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "take";
+    version = "0.1.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "17rfh39di5n8w9aghpic2r94cndi3dr04l60nkjylmxfxr3iwlhd";
+    inherit dependencies buildDependencies features;
+  };
+  tempdir_0_3_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tempdir";
+    version = "0.3.7";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0y53sxybyljrr7lh0x0ysrsa7p7cljmwv9v80acy3rc6n97g67vy";
+    inherit dependencies buildDependencies features;
+  };
+  termcolor_0_3_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "termcolor";
+    version = "0.3.6";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "0w609sa1apl1kii67ln2g82r4rrycw45zgjq7mxxjrx1fa21v05z";
+    inherit dependencies buildDependencies features;
+  };
+  termion_1_5_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "termion";
+    version = "1.5.1";
+    authors = [ "ticki <Ticki@users.noreply.github.com>" "gycos <alexandre.bury@gmail.com>" "IGI-111 <igi-111@protonmail.com>" ];
+    sha256 = "02gq4vd8iws1f3gjrgrgpajsk2bk43nds5acbbb4s8dvrdvr8nf1";
+    inherit dependencies buildDependencies features;
+  };
+  textwrap_0_9_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "textwrap";
+    version = "0.9.0";
+    authors = [ "Martin Geisler <martin@geisler.net>" ];
+    sha256 = "18jg79ndjlwndz01mlbh82kkr2arqm658yn5kwp65l5n1hz8w4yb";
+    inherit dependencies buildDependencies features;
+  };
+  thread_local_0_3_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "thread_local";
+    version = "0.3.5";
+    authors = [ "Amanieu d'Antras <amanieu@gmail.com>" ];
+    sha256 = "0mkp0sp91aqsk7brgygai4igv751r1754rsxn37mig3ag5rx8np6";
+    inherit dependencies buildDependencies features;
+  };
+  time_0_1_40_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "time";
+    version = "0.1.40";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "0wgnbjamljz6bqxsd5axc4p2mmhkqfrryj4gf2yswjaxiw5dd01m";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_0_1_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio";
+    version = "0.1.6";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "03sw1pkl0pkrlrx2qc82c3r29bnibzbsy9gl16qsi75p3jqqj3g0";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_core_0_1_17_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-core";
+    version = "0.1.17";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "1j6c5q3aakvb1hjx4r95xwl5ms8rp19k4qsr6v6ngwbvr6f9z6rs";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_executor_0_1_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-executor";
+    version = "0.1.2";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "1y4mwqjw438x6jskigz1knvfbpbinxfv6h43s60w6wdb80xmyg48";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_fs_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-fs";
+    version = "0.1.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "02w7py4i92vwa0zdap4p2inalglmklfm6xj6zf5fzbynxfj2jddm";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_io_0_1_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-io";
+    version = "0.1.6";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0awvw1cfylws2lqdls615hcnrz7x7krr7gm57bgj55xai14rmk9k";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_proto_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-proto";
+    version = "0.1.1";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "030q9h8pn1ngm80klff5irglxxki60hf5maw0mppmmr46k773z66";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_reactor_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-reactor";
+    version = "0.1.1";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0crs57d2k4a69abqhjzs3crs3hfw7qia3phpc3saxpnwh1j51093";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_service_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-service";
+    version = "0.1.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0c85wm5qz9fabg0k6k763j89m43n6max72d3a8sxcs940id6qmih";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_signal_0_1_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-signal";
+    version = "0.1.5";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "1rqbb1n2kzzy3gqc4ha3rd3km1wdgy1mgbbngn5alpq9xvd4x1kz";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_tcp_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-tcp";
+    version = "0.1.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "19cyajkqvvbn3qqnak0qzivdq6amfjymbc30k7bbqhx4y1pcgqvh";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_threadpool_0_1_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-threadpool";
+    version = "0.1.3";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "03frrcrq0r8z7gl7k9i3qy7ijnk5mbwcszlcbfk7zfhy23ik46md";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_timer_0_2_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-timer";
+    version = "0.2.3";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "13n45gbjv1wj5pf9v0s63qxpv88yifm8zfbq1pyhwdpf4nwnvn97";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_tls_0_1_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-tls";
+    version = "0.1.4";
+    authors = [ "Carl Lerche <me@carllerche.com>" "Alex Crichton <alex@alexcrichton.com>" ];
+    sha256 = "07rwv3q6jbg65ln1ahzb4g648l8lcn4hvc0ax3r12bnsi1py7agp";
+    inherit dependencies buildDependencies features;
+  };
+  tokio_udp_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "tokio-udp";
+    version = "0.1.0";
+    authors = [ "Carl Lerche <me@carllerche.com>" ];
+    sha256 = "0c1wjiqri0xlfrqq2hmgppvl9j8pjy8469s67f08dc8lybmrb1q1";
+    inherit dependencies buildDependencies features;
+  };
+  trust_dns_proto_0_3_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "trust-dns-proto";
+    version = "0.3.3";
+    authors = [ "Benjamin Fry <benjaminfry@me.com>" ];
+    sha256 = "10cf1999j552fdxnk9cq84n26ybj5b8pk2914akag57g035iq1ql";
+    libPath = "src/lib.rs";
+    libName = "trust_dns_proto";
+    inherit dependencies buildDependencies features;
+  };
+  trust_dns_resolver_0_8_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "trust-dns-resolver";
+    version = "0.8.2";
+    authors = [ "Benjamin Fry <benjaminfry@me.com>" ];
+    sha256 = "0df4ls6gk97zc1931jwm8w9d1mg34h0j4zhm77aaxwq9cjk71xw1";
+    libPath = "src/lib.rs";
+    libName = "trust_dns_resolver";
+    inherit dependencies buildDependencies features;
+  };
+  try_lock_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "try-lock";
+    version = "0.1.0";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "0kfrqrb2xkjig54s3qfy80dpldknr19p3rmp0n82yk5929j879k3";
+    inherit dependencies buildDependencies features;
+  };
+  twoway_0_1_8_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "twoway";
+    version = "0.1.8";
+    authors = [ "bluss" ];
+    sha256 = "0svrdcy08h0gm884f220hx37g8fsp5z6abaw6jb6g3f7djw1ir1g";
+    inherit dependencies buildDependencies features;
+  };
+  typed_arena_1_3_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "typed-arena";
+    version = "1.3.0";
+    authors = [ "Simon Sapin <simon.sapin@exyr.org>" ];
+    sha256 = "19yylpxv4mkx5285igiywh57snj6bgk8yw6139cjy7j86nz0mx9s";
+    libPath = "src/lib.rs";
+    libName = "typed_arena";
+    inherit dependencies buildDependencies features;
+  };
+  ucd_util_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "ucd-util";
+    version = "0.1.1";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "02a8h3siipx52b832xc8m8rwasj6nx9jpiwfldw8hp6k205hgkn0";
+    inherit dependencies buildDependencies features;
+  };
+  unicase_1_4_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicase";
+    version = "1.4.2";
+    authors = [ "Sean McArthur <sean.monstar@gmail.com>" ];
+    sha256 = "0rbnhw2mnhcwrij3vczp0sl8zdfmvf2dlh8hly81kj7132kfj0mf";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  unicase_2_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicase";
+    version = "2.1.0";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "1zzn16hh8fdx5pnbbnl32q8m2mh4vpd1jm9pdcv969ik83dw4byp";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  unicode_bidi_0_3_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicode-bidi";
+    version = "0.3.4";
+    authors = [ "The Servo Project Developers" ];
+    sha256 = "0lcd6jasrf8p9p0q20qyf10c6xhvw40m2c4rr105hbk6zy26nj1q";
+    libName = "unicode_bidi";
+    inherit dependencies buildDependencies features;
+  };
+  unicode_normalization_0_1_7_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicode-normalization";
+    version = "0.1.7";
+    authors = [ "kwantam <kwantam@gmail.com>" ];
+    sha256 = "1da2hv800pd0wilmn4idwpgv5p510hjxizjcfv6xzb40xcsjd8gs";
+    inherit dependencies buildDependencies features;
+  };
+  unicode_width_0_1_5_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicode-width";
+    version = "0.1.5";
+    authors = [ "kwantam <kwantam@gmail.com>" ];
+    sha256 = "0886lc2aymwgy0lhavwn6s48ik3c61ykzzd3za6prgnw51j7bi4w";
+    inherit dependencies buildDependencies features;
+  };
+  unicode_xid_0_0_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicode-xid";
+    version = "0.0.4";
+    authors = [ "erick.tryzelaar <erick.tryzelaar@gmail.com>" "kwantam <kwantam@gmail.com>" ];
+    sha256 = "1dc8wkkcd3s6534s5aw4lbjn8m67flkkbnajp5bl8408wdg8rh9v";
+    inherit dependencies buildDependencies features;
+  };
+  unicode_xid_0_1_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicode-xid";
+    version = "0.1.0";
+    authors = [ "erick.tryzelaar <erick.tryzelaar@gmail.com>" "kwantam <kwantam@gmail.com>" ];
+    sha256 = "05wdmwlfzxhq3nhsxn6wx4q8dhxzzfb9szsz6wiw092m1rjj01zj";
+    inherit dependencies buildDependencies features;
+  };
+  unicode_categories_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unicode_categories";
+    version = "0.1.1";
+    authors = [ "Sean Gillespie <sean@swgillespie.me>" ];
+    sha256 = "0capsv7dgw45sh7gpdgpfnmrjx2rdmkp5m523h35apq51cf8fpdi";
+    inherit dependencies buildDependencies features;
+  };
+  unreachable_1_0_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "unreachable";
+    version = "1.0.0";
+    authors = [ "Jonathan Reem <jonathan.reem@gmail.com>" ];
+    sha256 = "1am8czbk5wwr25gbp2zr007744fxjshhdqjz9liz7wl4pnv3whcf";
+    inherit dependencies buildDependencies features;
+  };
+  untrusted_0_5_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "untrusted";
+    version = "0.5.1";
+    authors = [ "Brian Smith <brian@briansmith.org>" ];
+    sha256 = "10nbd2nd9asx0v2g59i188rbpclh2xjaj10cjmp8h8a7in4i9pvd";
+    inherit dependencies buildDependencies features;
+  };
+  url_1_7_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "url";
+    version = "1.7.0";
+    authors = [ "The rust-url developers" ];
+    sha256 = "0333ynhkp47hna88aamz1zpk4lxyzx4ab9n7yhc75g14w27cv8jj";
+    inherit dependencies buildDependencies features;
+  };
+  url_serde_0_2_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "url_serde";
+    version = "0.2.0";
+    authors = [ "The rust-url developers" ];
+    sha256 = "07ry87rw0pi1da6b53f7s3f52wx3ihxbcgjd4ldspfv5xh6wipsg";
+    inherit dependencies buildDependencies features;
+  };
+  utf8_ranges_1_0_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "utf8-ranges";
+    version = "1.0.0";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "0rzmqprwjv9yp1n0qqgahgm24872x6c0xddfym5pfndy7a36vkn0";
+    inherit dependencies buildDependencies features;
+  };
+  uuid_0_5_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "uuid";
+    version = "0.5.1";
+    authors = [ "The Rust Project Developers" ];
+    sha256 = "17d4csjmy7fa3ckrm40d3c3v411rw5d4400w756mcrzyw2pm1i2r";
+    inherit dependencies buildDependencies features;
+  };
+  uuid_0_6_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "uuid";
+    version = "0.6.3";
+    authors = [ "Ashley Mannix<ashleymannix@live.com.au>" "Christopher Armstrong" "Dylan DPC<dylan.dpc@gmail.com>" "Hunar Roop Kahlon<hunar.roop@gmail.com>" ];
+    sha256 = "1kjp5xglhab4saaikn95zn3mr4zja7484pv307cb5bxm2sawb8p6";
+    inherit dependencies buildDependencies features;
+  };
+  vcpkg_0_2_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "vcpkg";
+    version = "0.2.3";
+    authors = [ "Jim McGrath <jimmc2@gmail.com>" ];
+    sha256 = "0achi8sfy0wm4q04gj7nwpq9xfx8ynk6vv4r12a3ijg26hispq0c";
+    inherit dependencies buildDependencies features;
+  };
+  vec_map_0_8_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "vec_map";
+    version = "0.8.1";
+    authors = [ "Alex Crichton <alex@alexcrichton.com>" "Jorge Aparicio <japaricious@gmail.com>" "Alexis Beingessner <a.beingessner@gmail.com>" "Brian Anderson <>" "tbu- <>" "Manish Goregaokar <>" "Aaron Turon <aturon@mozilla.com>" "Adolfo Ochagavía <>" "Niko Matsakis <>" "Steven Fackler <>" "Chase Southwood <csouth3@illinois.edu>" "Eduard Burtescu <>" "Florian Wilkens <>" "Félix Raimundo <>" "Tibor Benke <>" "Markus Siemens <markus@m-siemens.de>" "Josh Branchaud <jbranchaud@gmail.com>" "Huon Wilson <dbau.pp@gmail.com>" "Corey Farwell <coref@rwell.org>" "Aaron Liblong <>" "Nick Cameron <nrc@ncameron.org>" "Patrick Walton <pcwalton@mimiga.net>" "Felix S Klock II <>" "Andrew Paseltiner <apaseltiner@gmail.com>" "Sean McArthur <sean.monstar@gmail.com>" "Vadim Petrochenkov <>" ];
+    sha256 = "1jj2nrg8h3l53d43rwkpkikq5a5x15ms4rf1rw92hp5lrqhi8mpi";
+    inherit dependencies buildDependencies features;
+  };
+  version_check_0_1_3_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "version_check";
+    version = "0.1.3";
+    authors = [ "Sergio Benitez <sb@sergio.bz>" ];
+    sha256 = "0z635wdclv9bvafj11fpgndn7y79ibpsnc364pm61i1m4wwg8msg";
+    inherit dependencies buildDependencies features;
+  };
+  void_1_0_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "void";
+    version = "1.0.2";
+    authors = [ "Jonathan Reem <jonathan.reem@gmail.com>" ];
+    sha256 = "0h1dm0dx8dhf56a83k68mijyxigqhizpskwxfdrs1drwv2cdclv3";
+    inherit dependencies buildDependencies features;
+  };
+  walkdir_2_1_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "walkdir";
+    version = "2.1.4";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "1bx9q2xnhgbjygn99zi8j5avhv8jmkbi5lxgg20h9kmgswqkbmny";
+    inherit dependencies buildDependencies features;
+  };
+  want_0_0_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "want";
+    version = "0.0.4";
+    authors = [ "Sean McArthur <sean@seanmonstar.com>" ];
+    sha256 = "1l1qy4pvg5q71nrzfjldw9xzqhhgicj4slly1bal89hr2aaibpy0";
+    inherit dependencies buildDependencies features;
+  };
+  widestring_0_2_2_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "widestring";
+    version = "0.2.2";
+    authors = [ "Kathryn Long <squeeself@gmail.com>" ];
+    sha256 = "07n6cmk47h8v4bvg7cwawipcn6ijqcfwhf9w6x3r2nw3ghsm2h0a";
+    inherit dependencies buildDependencies features;
+  };
+  winapi_0_2_8_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "winapi";
+    version = "0.2.8";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "0a45b58ywf12vb7gvj6h3j264nydynmzyqz8d8rqxsj6icqv82as";
+    inherit dependencies buildDependencies features;
+  };
+  winapi_0_3_4_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "winapi";
+    version = "0.3.4";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "1qbrf5dcnd8j36cawby5d9r5vx07r0l4ryf672pfncnp8895k9lx";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  winapi_build_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "winapi-build";
+    version = "0.1.1";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "1lxlpi87rkhxcwp2ykf1ldw3p108hwm24nywf3jfrvmff4rjhqga";
+    libName = "build";
+    inherit dependencies buildDependencies features;
+  };
+  winapi_i686_pc_windows_gnu_0_4_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "winapi-i686-pc-windows-gnu";
+    version = "0.4.0";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "05ihkij18r4gamjpxj4gra24514can762imjzlmak5wlzidplzrp";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  winapi_x86_64_pc_windows_gnu_0_4_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "winapi-x86_64-pc-windows-gnu";
+    version = "0.4.0";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "0n1ylmlsb8yg1v583i4xy0qmqg42275flvbc51hdqjjfjcl9vlbj";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  wincolor_0_1_6_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "wincolor";
+    version = "0.1.6";
+    authors = [ "Andrew Gallant <jamslam@gmail.com>" ];
+    sha256 = "0f8m3l86pw6qi31jidqj78pgd15xj914850lyvsxkbln4f1drv47";
+    inherit dependencies buildDependencies features;
+  };
+  winreg_0_5_0_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "winreg";
+    version = "0.5.0";
+    authors = [ "Igor Shaula <gentoo90@gmail.com>" ];
+    sha256 = "0smhk0h5kcwzpjlhyvx2p6cjda28cchzjbnwbs658rz641q98rcd";
+    inherit dependencies buildDependencies features;
+  };
+  winutil_0_1_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "winutil";
+    version = "0.1.1";
+    authors = [ "Dave Lancaster <lancaster.dave@gmail.com>" ];
+    sha256 = "1wvq440hl1v3a65agjbp031gw5jim3qasfvmz703dlz95pbjv45r";
+    inherit dependencies buildDependencies features;
+  };
+  ws2_32_sys_0_2_1_ = { dependencies?[], buildDependencies?[], features?[] }: buildRustCrate {
+    crateName = "ws2_32-sys";
+    version = "0.2.1";
+    authors = [ "Peter Atashian <retep998@gmail.com>" ];
+    sha256 = "1zpy9d9wk11sj17fczfngcj28w4xxjs3b4n036yzpy38dxp4f7kc";
+    libName = "ws2_32";
+    build = "build.rs";
+    inherit dependencies buildDependencies features;
+  };
+  actix_0_5_7 = { features?(actix_0_5_7_features {}) }: actix_0_5_7_ {
+    dependencies = mapFeatures features ([ actix_derive_0_2_0 bitflags_1_0_3 bytes_0_4_7 crossbeam_channel_0_1_2 failure_0_1_1 futures_0_1_21 libc_0_2_41 log_0_4_1 smallvec_0_6_1 tokio_core_0_1_17 tokio_io_0_1_6 tokio_signal_0_1_5 trust_dns_resolver_0_8_2 uuid_0_6_3 ]);
+    buildDependencies = mapFeatures features ([ skeptic_0_13_3 ]);
+  };
+  actix_0_5_7_features = f: updateFeatures f (rec {
+    actix_0_5_7.default = (f.actix_0_5_7.default or true);
+    actix_derive_0_2_0.default = true;
+    bitflags_1_0_3.default = true;
+    bytes_0_4_7.default = true;
+    crossbeam_channel_0_1_2.default = true;
+    failure_0_1_1.default = true;
+    futures_0_1_21.default = true;
+    libc_0_2_41.default = true;
+    log_0_4_1.default = true;
+    skeptic_0_13_3.default = true;
+    smallvec_0_6_1.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_signal_0_1_5.default = true;
+    trust_dns_resolver_0_8_2.default = true;
+    uuid_0_6_3."v4" = true;
+    uuid_0_6_3.default = true;
+  }) [ actix_derive_0_2_0_features bitflags_1_0_3_features bytes_0_4_7_features crossbeam_channel_0_1_2_features failure_0_1_1_features futures_0_1_21_features libc_0_2_41_features log_0_4_1_features smallvec_0_6_1_features tokio_core_0_1_17_features tokio_io_0_1_6_features tokio_signal_0_1_5_features trust_dns_resolver_0_8_2_features uuid_0_6_3_features skeptic_0_13_3_features ];
+  actix_web_0_6_9 = { features?(actix_web_0_6_9_features {}) }: actix_web_0_6_9_ {
+    dependencies = mapFeatures features ([ actix_0_5_7 base64_0_9_1 bitflags_1_0_3 byteorder_1_2_3 bytes_0_4_7 cookie_0_10_1 encoding_0_2_33 failure_0_1_1 futures_0_1_21 futures_cpupool_0_1_8 h2_0_1_7 http_0_1_5 http_range_0_1_1 httparse_1_2_4 language_tags_0_2_2 lazy_static_1_0_0 libc_0_2_41 log_0_4_1 mime_0_3_7 mime_guess_2_0_0_alpha_4 mio_0_6_14 net2_0_2_32 num_cpus_1_8_0 percent_encoding_1_0_1 rand_0_4_2 regex_1_0_0 serde_1_0_59 serde_json_1_0_17 serde_urlencoded_0_5_2 sha1_0_6_0 slab_0_4_0 smallvec_0_6_1 time_0_1_40 tokio_core_0_1_17 tokio_io_0_1_6 url_1_7_0 ]
+      ++ (if features.actix_web_0_6_9."brotli2" or false then [ brotli2_0_3_2 ] else [])
+      ++ (if features.actix_web_0_6_9."flate2" or false then [ flate2_1_0_1 ] else []));
+    buildDependencies = mapFeatures features ([ version_check_0_1_3 ]);
+    features = mkFeatures (features.actix_web_0_6_9 or {});
+  };
+  actix_web_0_6_9_features = f: updateFeatures f (rec {
+    actix_0_5_7.default = true;
+    actix_web_0_6_9."brotli2" =
+      (f.actix_web_0_6_9."brotli2" or false) ||
+      (f.actix_web_0_6_9.brotli or false) ||
+      (actix_web_0_6_9.brotli or false);
+    actix_web_0_6_9."flate2-c" =
+      (f.actix_web_0_6_9."flate2-c" or false) ||
+      (f.actix_web_0_6_9.default or false) ||
+      (actix_web_0_6_9.default or false);
+    actix_web_0_6_9."native-tls" =
+      (f.actix_web_0_6_9."native-tls" or false) ||
+      (f.actix_web_0_6_9.tls or false) ||
+      (actix_web_0_6_9.tls or false);
+    actix_web_0_6_9."tokio-openssl" =
+      (f.actix_web_0_6_9."tokio-openssl" or false) ||
+      (f.actix_web_0_6_9.alpn or false) ||
+      (actix_web_0_6_9.alpn or false);
+    actix_web_0_6_9."tokio-tls" =
+      (f.actix_web_0_6_9."tokio-tls" or false) ||
+      (f.actix_web_0_6_9.tls or false) ||
+      (actix_web_0_6_9.tls or false);
+    actix_web_0_6_9.brotli =
+      (f.actix_web_0_6_9.brotli or false) ||
+      (f.actix_web_0_6_9.default or false) ||
+      (actix_web_0_6_9.default or false);
+    actix_web_0_6_9.default = (f.actix_web_0_6_9.default or true);
+    actix_web_0_6_9.openssl =
+      (f.actix_web_0_6_9.openssl or false) ||
+      (f.actix_web_0_6_9.alpn or false) ||
+      (actix_web_0_6_9.alpn or false);
+    actix_web_0_6_9.session =
+      (f.actix_web_0_6_9.session or false) ||
+      (f.actix_web_0_6_9.default or false) ||
+      (actix_web_0_6_9.default or false);
+    base64_0_9_1.default = true;
+    bitflags_1_0_3.default = true;
+    brotli2_0_3_2.default = true;
+    byteorder_1_2_3.default = true;
+    bytes_0_4_7.default = true;
+    cookie_0_10_1."percent-encode" = true;
+    cookie_0_10_1.default = true;
+    cookie_0_10_1.secure =
+      (f.cookie_0_10_1.secure or false) ||
+      (actix_web_0_6_9.session or false) ||
+      (f.actix_web_0_6_9.session or false);
+    encoding_0_2_33.default = true;
+    failure_0_1_1.default = true;
+    flate2_1_0_1."miniz-sys" =
+      (f.flate2_1_0_1."miniz-sys" or false) ||
+      (actix_web_0_6_9."flate2-c" or false) ||
+      (f.actix_web_0_6_9."flate2-c" or false);
+    flate2_1_0_1.default = (f.flate2_1_0_1.default or false);
+    flate2_1_0_1.rust_backend =
+      (f.flate2_1_0_1.rust_backend or false) ||
+      (actix_web_0_6_9."flate2-rust" or false) ||
+      (f.actix_web_0_6_9."flate2-rust" or false);
+    futures_0_1_21.default = true;
+    futures_cpupool_0_1_8.default = true;
+    h2_0_1_7.default = true;
+    http_0_1_5.default = true;
+    http_range_0_1_1.default = true;
+    httparse_1_2_4.default = true;
+    language_tags_0_2_2.default = true;
+    lazy_static_1_0_0.default = true;
+    libc_0_2_41.default = true;
+    log_0_4_1.default = true;
+    mime_0_3_7.default = true;
+    mime_guess_2_0_0_alpha_4.default = true;
+    mio_0_6_14.default = true;
+    net2_0_2_32.default = true;
+    num_cpus_1_8_0.default = true;
+    percent_encoding_1_0_1.default = true;
+    rand_0_4_2.default = true;
+    regex_1_0_0.default = true;
+    serde_1_0_59.default = true;
+    serde_json_1_0_17.default = true;
+    serde_urlencoded_0_5_2.default = true;
+    sha1_0_6_0.default = true;
+    slab_0_4_0.default = true;
+    smallvec_0_6_1.default = true;
+    time_0_1_40.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    url_1_7_0.default = true;
+    url_1_7_0.query_encoding = true;
+    version_check_0_1_3.default = true;
+  }) [ actix_0_5_7_features base64_0_9_1_features bitflags_1_0_3_features brotli2_0_3_2_features byteorder_1_2_3_features bytes_0_4_7_features cookie_0_10_1_features encoding_0_2_33_features failure_0_1_1_features flate2_1_0_1_features futures_0_1_21_features futures_cpupool_0_1_8_features h2_0_1_7_features http_0_1_5_features http_range_0_1_1_features httparse_1_2_4_features language_tags_0_2_2_features lazy_static_1_0_0_features libc_0_2_41_features log_0_4_1_features mime_0_3_7_features mime_guess_2_0_0_alpha_4_features mio_0_6_14_features net2_0_2_32_features num_cpus_1_8_0_features percent_encoding_1_0_1_features rand_0_4_2_features regex_1_0_0_features serde_1_0_59_features serde_json_1_0_17_features serde_urlencoded_0_5_2_features sha1_0_6_0_features slab_0_4_0_features smallvec_0_6_1_features time_0_1_40_features tokio_core_0_1_17_features tokio_io_0_1_6_features url_1_7_0_features version_check_0_1_3_features ];
+  actix_derive_0_2_0 = { features?(actix_derive_0_2_0_features {}) }: actix_derive_0_2_0_ {
+    dependencies = mapFeatures features ([ quote_0_3_15 rand_0_3_22 syn_0_11_11 ]);
+    buildDependencies = mapFeatures features ([ version_check_0_1_3 ]);
+  };
+  actix_derive_0_2_0_features = f: updateFeatures f (rec {
+    actix_derive_0_2_0.default = (f.actix_derive_0_2_0.default or true);
+    quote_0_3_15.default = true;
+    rand_0_3_22.default = true;
+    syn_0_11_11.default = true;
+    syn_0_11_11.full = true;
+    version_check_0_1_3.default = true;
+  }) [ quote_0_3_15_features rand_0_3_22_features syn_0_11_11_features version_check_0_1_3_features ];
+  adler32_1_0_2 = { features?(adler32_1_0_2_features {}) }: adler32_1_0_2_ {};
+  adler32_1_0_2_features = f: updateFeatures f (rec {
+    adler32_1_0_2.default = (f.adler32_1_0_2.default or true);
+  }) [];
+  aho_corasick_0_6_4 = { features?(aho_corasick_0_6_4_features {}) }: aho_corasick_0_6_4_ {
+    dependencies = mapFeatures features ([ memchr_2_0_1 ]);
+  };
+  aho_corasick_0_6_4_features = f: updateFeatures f (rec {
+    aho_corasick_0_6_4.default = (f.aho_corasick_0_6_4.default or true);
+    memchr_2_0_1.default = true;
+  }) [ memchr_2_0_1_features ];
+  ansi_term_0_11_0 = { features?(ansi_term_0_11_0_features {}) }: ansi_term_0_11_0_ {
+    dependencies = (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  ansi_term_0_11_0_features = f: updateFeatures f (rec {
+    ansi_term_0_11_0.default = (f.ansi_term_0_11_0.default or true);
+    winapi_0_3_4.consoleapi = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.errhandlingapi = true;
+    winapi_0_3_4.processenv = true;
+  }) [ winapi_0_3_4_features ];
+  antidote_1_0_0 = { features?(antidote_1_0_0_features {}) }: antidote_1_0_0_ {};
+  antidote_1_0_0_features = f: updateFeatures f (rec {
+    antidote_1_0_0.default = (f.antidote_1_0_0.default or true);
+  }) [];
+  arrayvec_0_4_7 = { features?(arrayvec_0_4_7_features {}) }: arrayvec_0_4_7_ {
+    dependencies = mapFeatures features ([ nodrop_0_1_12 ]);
+    features = mkFeatures (features.arrayvec_0_4_7 or {});
+  };
+  arrayvec_0_4_7_features = f: updateFeatures f (rec {
+    arrayvec_0_4_7.default = (f.arrayvec_0_4_7.default or true);
+    arrayvec_0_4_7.serde =
+      (f.arrayvec_0_4_7.serde or false) ||
+      (f.arrayvec_0_4_7."serde-1" or false) ||
+      (arrayvec_0_4_7."serde-1" or false);
+    arrayvec_0_4_7.std =
+      (f.arrayvec_0_4_7.std or false) ||
+      (f.arrayvec_0_4_7.default or false) ||
+      (arrayvec_0_4_7.default or false);
+    nodrop_0_1_12.default = (f.nodrop_0_1_12.default or false);
+  }) [ nodrop_0_1_12_features ];
+  askama_0_6_4 = { features?(askama_0_6_4_features {}) }: askama_0_6_4_ {
+    dependencies = mapFeatures features ([ askama_derive_0_6_4 askama_shared_0_6_2 ]);
+    features = mkFeatures (features.askama_0_6_4 or {});
+  };
+  askama_0_6_4_features = f: updateFeatures f (rec {
+    askama_0_6_4.default = (f.askama_0_6_4.default or true);
+    askama_0_6_4.iron =
+      (f.askama_0_6_4.iron or false) ||
+      (f.askama_0_6_4."with-iron" or false) ||
+      (askama_0_6_4."with-iron" or false);
+    askama_0_6_4.rocket =
+      (f.askama_0_6_4.rocket or false) ||
+      (f.askama_0_6_4."with-rocket" or false) ||
+      (askama_0_6_4."with-rocket" or false);
+    askama_derive_0_6_4.default = true;
+    askama_derive_0_6_4.iron =
+      (f.askama_derive_0_6_4.iron or false) ||
+      (askama_0_6_4."with-iron" or false) ||
+      (f.askama_0_6_4."with-iron" or false);
+    askama_derive_0_6_4.rocket =
+      (f.askama_derive_0_6_4.rocket or false) ||
+      (askama_0_6_4."with-rocket" or false) ||
+      (f.askama_0_6_4."with-rocket" or false);
+    askama_shared_0_6_2."serde-json" =
+      (f.askama_shared_0_6_2."serde-json" or false) ||
+      (askama_0_6_4."serde-json" or false) ||
+      (f.askama_0_6_4."serde-json" or false);
+    askama_shared_0_6_2.default = true;
+  }) [ askama_derive_0_6_4_features askama_shared_0_6_2_features ];
+  askama_derive_0_6_4 = { features?(askama_derive_0_6_4_features {}) }: askama_derive_0_6_4_ {
+    dependencies = mapFeatures features ([ askama_shared_0_6_2 nom_3_2_1 quote_0_5_2 syn_0_13_11 ]);
+    features = mkFeatures (features.askama_derive_0_6_4 or {});
+  };
+  askama_derive_0_6_4_features = f: updateFeatures f (rec {
+    askama_derive_0_6_4.default = (f.askama_derive_0_6_4.default or true);
+    askama_shared_0_6_2.default = true;
+    askama_shared_0_6_2.iron =
+      (f.askama_shared_0_6_2.iron or false) ||
+      (askama_derive_0_6_4.iron or false) ||
+      (f.askama_derive_0_6_4.iron or false);
+    askama_shared_0_6_2.rocket =
+      (f.askama_shared_0_6_2.rocket or false) ||
+      (askama_derive_0_6_4.rocket or false) ||
+      (f.askama_derive_0_6_4.rocket or false);
+    nom_3_2_1.default = true;
+    quote_0_5_2.default = true;
+    syn_0_13_11.default = true;
+  }) [ askama_shared_0_6_2_features nom_3_2_1_features quote_0_5_2_features syn_0_13_11_features ];
+  askama_shared_0_6_2 = { features?(askama_shared_0_6_2_features {}) }: askama_shared_0_6_2_ {
+    dependencies = mapFeatures features ([ error_chain_0_11_0 ]);
+    features = mkFeatures (features.askama_shared_0_6_2 or {});
+  };
+  askama_shared_0_6_2_features = f: updateFeatures f (rec {
+    askama_shared_0_6_2.default = (f.askama_shared_0_6_2.default or true);
+    askama_shared_0_6_2.serde =
+      (f.askama_shared_0_6_2.serde or false) ||
+      (f.askama_shared_0_6_2."serde-json" or false) ||
+      (askama_shared_0_6_2."serde-json" or false);
+    askama_shared_0_6_2.serde_json =
+      (f.askama_shared_0_6_2.serde_json or false) ||
+      (f.askama_shared_0_6_2."serde-json" or false) ||
+      (askama_shared_0_6_2."serde-json" or false);
+    error_chain_0_11_0.default = true;
+  }) [ error_chain_0_11_0_features ];
+  atty_0_2_10 = { features?(atty_0_2_10_features {}) }: atty_0_2_10_ {
+    dependencies = (if kernel == "redox" then mapFeatures features ([ termion_1_5_1 ]) else [])
+      ++ (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  atty_0_2_10_features = f: updateFeatures f (rec {
+    atty_0_2_10.default = (f.atty_0_2_10.default or true);
+    libc_0_2_41.default = (f.libc_0_2_41.default or false);
+    termion_1_5_1.default = true;
+    winapi_0_3_4.consoleapi = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.minwinbase = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.processenv = true;
+    winapi_0_3_4.winbase = true;
+  }) [ termion_1_5_1_features libc_0_2_41_features winapi_0_3_4_features ];
+  backtrace_0_2_3 = { features?(backtrace_0_2_3_features {}) }: backtrace_0_2_3_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 libc_0_2_41 rustc_demangle_0_1_8 ]
+      ++ (if features.backtrace_0_2_3."backtrace-sys" or false then [ backtrace_sys_0_1_16 ] else [])
+      ++ (if features.backtrace_0_2_3."dbghelp-sys" or false then [ dbghelp_sys_0_2_0 ] else [])
+      ++ (if features.backtrace_0_2_3."kernel32-sys" or false then [ kernel32_sys_0_2_2 ] else [])
+      ++ (if features.backtrace_0_2_3.winapi or false then [ winapi_0_2_8 ] else []));
+    buildDependencies = mapFeatures features ([]);
+    features = mkFeatures (features.backtrace_0_2_3 or {});
+  };
+  backtrace_0_2_3_features = f: updateFeatures f (rec {
+    backtrace_0_2_3."backtrace-sys" =
+      (f.backtrace_0_2_3."backtrace-sys" or false) ||
+      (f.backtrace_0_2_3.libbacktrace or false) ||
+      (backtrace_0_2_3.libbacktrace or false);
+    backtrace_0_2_3."dbghelp-sys" =
+      (f.backtrace_0_2_3."dbghelp-sys" or false) ||
+      (f.backtrace_0_2_3.dbghelp or false) ||
+      (backtrace_0_2_3.dbghelp or false);
+    backtrace_0_2_3."kernel32-sys" =
+      (f.backtrace_0_2_3."kernel32-sys" or false) ||
+      (f.backtrace_0_2_3.dbghelp or false) ||
+      (backtrace_0_2_3.dbghelp or false);
+    backtrace_0_2_3."rustc-serialize" =
+      (f.backtrace_0_2_3."rustc-serialize" or false) ||
+      (f.backtrace_0_2_3."serialize-rustc" or false) ||
+      (backtrace_0_2_3."serialize-rustc" or false);
+    backtrace_0_2_3.dbghelp =
+      (f.backtrace_0_2_3.dbghelp or false) ||
+      (f.backtrace_0_2_3.default or false) ||
+      (backtrace_0_2_3.default or false);
+    backtrace_0_2_3.default = (f.backtrace_0_2_3.default or true);
+    backtrace_0_2_3.dladdr =
+      (f.backtrace_0_2_3.dladdr or false) ||
+      (f.backtrace_0_2_3.default or false) ||
+      (backtrace_0_2_3.default or false);
+    backtrace_0_2_3.libbacktrace =
+      (f.backtrace_0_2_3.libbacktrace or false) ||
+      (f.backtrace_0_2_3.default or false) ||
+      (backtrace_0_2_3.default or false);
+    backtrace_0_2_3.libunwind =
+      (f.backtrace_0_2_3.libunwind or false) ||
+      (f.backtrace_0_2_3.default or false) ||
+      (backtrace_0_2_3.default or false);
+    backtrace_0_2_3.serde =
+      (f.backtrace_0_2_3.serde or false) ||
+      (f.backtrace_0_2_3."serialize-serde" or false) ||
+      (backtrace_0_2_3."serialize-serde" or false);
+    backtrace_0_2_3.serde_codegen =
+      (f.backtrace_0_2_3.serde_codegen or false) ||
+      (f.backtrace_0_2_3."serialize-serde" or false) ||
+      (backtrace_0_2_3."serialize-serde" or false);
+    backtrace_0_2_3.winapi =
+      (f.backtrace_0_2_3.winapi or false) ||
+      (f.backtrace_0_2_3.dbghelp or false) ||
+      (backtrace_0_2_3.dbghelp or false);
+    backtrace_sys_0_1_16.default = true;
+    cfg_if_0_1_3.default = true;
+    dbghelp_sys_0_2_0.default = true;
+    kernel32_sys_0_2_2.default = true;
+    libc_0_2_41.default = true;
+    rustc_demangle_0_1_8.default = true;
+    winapi_0_2_8.default = true;
+  }) [ backtrace_sys_0_1_16_features cfg_if_0_1_3_features dbghelp_sys_0_2_0_features kernel32_sys_0_2_2_features libc_0_2_41_features rustc_demangle_0_1_8_features winapi_0_2_8_features ];
+  backtrace_0_3_7 = { features?(backtrace_0_3_7_features {}) }: backtrace_0_3_7_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 rustc_demangle_0_1_8 ])
+      ++ (if (kernel == "linux" || kernel == "darwin") && !(kernel == "fuchsia") && !(kernel == "emscripten") && !(kernel == "darwin") && !(kernel == "ios") then mapFeatures features ([ ]
+      ++ (if features.backtrace_0_3_7."backtrace-sys" or false then [ backtrace_sys_0_1_16 ] else [])) else [])
+      ++ (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ ]
+      ++ (if features.backtrace_0_3_7.winapi or false then [ winapi_0_3_4 ] else [])) else []);
+    features = mkFeatures (features.backtrace_0_3_7 or {});
+  };
+  backtrace_0_3_7_features = f: updateFeatures f (rec {
+    backtrace_0_3_7."addr2line" =
+      (f.backtrace_0_3_7."addr2line" or false) ||
+      (f.backtrace_0_3_7."gimli-symbolize" or false) ||
+      (backtrace_0_3_7."gimli-symbolize" or false);
+    backtrace_0_3_7."backtrace-sys" =
+      (f.backtrace_0_3_7."backtrace-sys" or false) ||
+      (f.backtrace_0_3_7.libbacktrace or false) ||
+      (backtrace_0_3_7.libbacktrace or false);
+    backtrace_0_3_7."rustc-serialize" =
+      (f.backtrace_0_3_7."rustc-serialize" or false) ||
+      (f.backtrace_0_3_7."serialize-rustc" or false) ||
+      (backtrace_0_3_7."serialize-rustc" or false);
+    backtrace_0_3_7.coresymbolication =
+      (f.backtrace_0_3_7.coresymbolication or false) ||
+      (f.backtrace_0_3_7.default or false) ||
+      (backtrace_0_3_7.default or false);
+    backtrace_0_3_7.dbghelp =
+      (f.backtrace_0_3_7.dbghelp or false) ||
+      (f.backtrace_0_3_7.default or false) ||
+      (backtrace_0_3_7.default or false);
+    backtrace_0_3_7.default = (f.backtrace_0_3_7.default or true);
+    backtrace_0_3_7.dladdr =
+      (f.backtrace_0_3_7.dladdr or false) ||
+      (f.backtrace_0_3_7.default or false) ||
+      (backtrace_0_3_7.default or false);
+    backtrace_0_3_7.findshlibs =
+      (f.backtrace_0_3_7.findshlibs or false) ||
+      (f.backtrace_0_3_7."gimli-symbolize" or false) ||
+      (backtrace_0_3_7."gimli-symbolize" or false);
+    backtrace_0_3_7.gimli =
+      (f.backtrace_0_3_7.gimli or false) ||
+      (f.backtrace_0_3_7."gimli-symbolize" or false) ||
+      (backtrace_0_3_7."gimli-symbolize" or false);
+    backtrace_0_3_7.libbacktrace =
+      (f.backtrace_0_3_7.libbacktrace or false) ||
+      (f.backtrace_0_3_7.default or false) ||
+      (backtrace_0_3_7.default or false);
+    backtrace_0_3_7.libunwind =
+      (f.backtrace_0_3_7.libunwind or false) ||
+      (f.backtrace_0_3_7.default or false) ||
+      (backtrace_0_3_7.default or false);
+    backtrace_0_3_7.memmap =
+      (f.backtrace_0_3_7.memmap or false) ||
+      (f.backtrace_0_3_7."gimli-symbolize" or false) ||
+      (backtrace_0_3_7."gimli-symbolize" or false);
+    backtrace_0_3_7.object =
+      (f.backtrace_0_3_7.object or false) ||
+      (f.backtrace_0_3_7."gimli-symbolize" or false) ||
+      (backtrace_0_3_7."gimli-symbolize" or false);
+    backtrace_0_3_7.serde =
+      (f.backtrace_0_3_7.serde or false) ||
+      (f.backtrace_0_3_7."serialize-serde" or false) ||
+      (backtrace_0_3_7."serialize-serde" or false);
+    backtrace_0_3_7.serde_derive =
+      (f.backtrace_0_3_7.serde_derive or false) ||
+      (f.backtrace_0_3_7."serialize-serde" or false) ||
+      (backtrace_0_3_7."serialize-serde" or false);
+    backtrace_0_3_7.winapi =
+      (f.backtrace_0_3_7.winapi or false) ||
+      (f.backtrace_0_3_7.dbghelp or false) ||
+      (backtrace_0_3_7.dbghelp or false);
+    backtrace_sys_0_1_16.default = true;
+    cfg_if_0_1_3.default = true;
+    libc_0_2_41.default = true;
+    rustc_demangle_0_1_8.default = true;
+    winapi_0_3_4.dbghelp = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.processthreadsapi = true;
+    winapi_0_3_4.std = true;
+    winapi_0_3_4.winnt = true;
+  }) [ cfg_if_0_1_3_features rustc_demangle_0_1_8_features backtrace_sys_0_1_16_features libc_0_2_41_features winapi_0_3_4_features ];
+  backtrace_sys_0_1_16 = { features?(backtrace_sys_0_1_16_features {}) }: backtrace_sys_0_1_16_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ]);
+    buildDependencies = mapFeatures features ([ cc_1_0_15 ]);
+  };
+  backtrace_sys_0_1_16_features = f: updateFeatures f (rec {
+    backtrace_sys_0_1_16.default = (f.backtrace_sys_0_1_16.default or true);
+    cc_1_0_15.default = true;
+    libc_0_2_41.default = true;
+  }) [ libc_0_2_41_features cc_1_0_15_features ];
+  base64_0_6_0 = { features?(base64_0_6_0_features {}) }: base64_0_6_0_ {
+    dependencies = mapFeatures features ([ byteorder_1_2_3 safemem_0_2_0 ]);
+  };
+  base64_0_6_0_features = f: updateFeatures f (rec {
+    base64_0_6_0.default = (f.base64_0_6_0.default or true);
+    byteorder_1_2_3.default = true;
+    safemem_0_2_0.default = true;
+  }) [ byteorder_1_2_3_features safemem_0_2_0_features ];
+  base64_0_9_1 = { features?(base64_0_9_1_features {}) }: base64_0_9_1_ {
+    dependencies = mapFeatures features ([ byteorder_1_2_3 safemem_0_2_0 ]);
+  };
+  base64_0_9_1_features = f: updateFeatures f (rec {
+    base64_0_9_1.default = (f.base64_0_9_1.default or true);
+    byteorder_1_2_3.default = true;
+    safemem_0_2_0.default = true;
+  }) [ byteorder_1_2_3_features safemem_0_2_0_features ];
+  bitflags_0_9_1 = { features?(bitflags_0_9_1_features {}) }: bitflags_0_9_1_ {
+    features = mkFeatures (features.bitflags_0_9_1 or {});
+  };
+  bitflags_0_9_1_features = f: updateFeatures f (rec {
+    bitflags_0_9_1.default = (f.bitflags_0_9_1.default or true);
+    bitflags_0_9_1.example_generated =
+      (f.bitflags_0_9_1.example_generated or false) ||
+      (f.bitflags_0_9_1.default or false) ||
+      (bitflags_0_9_1.default or false);
+  }) [];
+  bitflags_1_0_3 = { features?(bitflags_1_0_3_features {}) }: bitflags_1_0_3_ {
+    features = mkFeatures (features.bitflags_1_0_3 or {});
+  };
+  bitflags_1_0_3_features = f: updateFeatures f (rec {
+    bitflags_1_0_3.default = (f.bitflags_1_0_3.default or true);
+  }) [];
+  brotli_sys_0_3_2 = { features?(brotli_sys_0_3_2_features {}) }: brotli_sys_0_3_2_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ]);
+    buildDependencies = mapFeatures features ([ cc_1_0_15 ]);
+  };
+  brotli_sys_0_3_2_features = f: updateFeatures f (rec {
+    brotli_sys_0_3_2.default = (f.brotli_sys_0_3_2.default or true);
+    cc_1_0_15.default = true;
+    libc_0_2_41.default = true;
+  }) [ libc_0_2_41_features cc_1_0_15_features ];
+  brotli2_0_3_2 = { features?(brotli2_0_3_2_features {}) }: brotli2_0_3_2_ {
+    dependencies = mapFeatures features ([ brotli_sys_0_3_2 libc_0_2_41 ]);
+  };
+  brotli2_0_3_2_features = f: updateFeatures f (rec {
+    brotli2_0_3_2.default = (f.brotli2_0_3_2.default or true);
+    brotli_sys_0_3_2.default = true;
+    libc_0_2_41.default = true;
+  }) [ brotli_sys_0_3_2_features libc_0_2_41_features ];
+  build_const_0_2_1 = { features?(build_const_0_2_1_features {}) }: build_const_0_2_1_ {
+    features = mkFeatures (features.build_const_0_2_1 or {});
+  };
+  build_const_0_2_1_features = f: updateFeatures f (rec {
+    build_const_0_2_1.default = (f.build_const_0_2_1.default or true);
+    build_const_0_2_1.std =
+      (f.build_const_0_2_1.std or false) ||
+      (f.build_const_0_2_1.default or false) ||
+      (build_const_0_2_1.default or false);
+  }) [];
+  bytecount_0_3_1 = { features?(bytecount_0_3_1_features {}) }: bytecount_0_3_1_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.bytecount_0_3_1 or {});
+  };
+  bytecount_0_3_1_features = f: updateFeatures f (rec {
+    bytecount_0_3_1."simd-accel" =
+      (f.bytecount_0_3_1."simd-accel" or false) ||
+      (f.bytecount_0_3_1."avx-accel" or false) ||
+      (bytecount_0_3_1."avx-accel" or false);
+    bytecount_0_3_1.default = (f.bytecount_0_3_1.default or true);
+    bytecount_0_3_1.simd =
+      (f.bytecount_0_3_1.simd or false) ||
+      (f.bytecount_0_3_1."simd-accel" or false) ||
+      (bytecount_0_3_1."simd-accel" or false);
+  }) [];
+  byteorder_1_2_3 = { features?(byteorder_1_2_3_features {}) }: byteorder_1_2_3_ {
+    features = mkFeatures (features.byteorder_1_2_3 or {});
+  };
+  byteorder_1_2_3_features = f: updateFeatures f (rec {
+    byteorder_1_2_3.default = (f.byteorder_1_2_3.default or true);
+    byteorder_1_2_3.std =
+      (f.byteorder_1_2_3.std or false) ||
+      (f.byteorder_1_2_3.default or false) ||
+      (byteorder_1_2_3.default or false);
+  }) [];
+  bytes_0_4_7 = { features?(bytes_0_4_7_features {}) }: bytes_0_4_7_ {
+    dependencies = mapFeatures features ([ byteorder_1_2_3 iovec_0_1_2 ]);
+  };
+  bytes_0_4_7_features = f: updateFeatures f (rec {
+    byteorder_1_2_3.default = true;
+    bytes_0_4_7.default = (f.bytes_0_4_7.default or true);
+    iovec_0_1_2.default = true;
+  }) [ byteorder_1_2_3_features iovec_0_1_2_features ];
+  cargo_metadata_0_5_4 = { features?(cargo_metadata_0_5_4_features {}) }: cargo_metadata_0_5_4_ {
+    dependencies = mapFeatures features ([ error_chain_0_11_0 semver_0_9_0 serde_1_0_59 serde_derive_1_0_59 serde_json_1_0_17 ]);
+  };
+  cargo_metadata_0_5_4_features = f: updateFeatures f (rec {
+    cargo_metadata_0_5_4.default = (f.cargo_metadata_0_5_4.default or true);
+    error_chain_0_11_0.default = true;
+    semver_0_9_0.default = true;
+    semver_0_9_0.serde = true;
+    serde_1_0_59.default = true;
+    serde_derive_1_0_59.default = true;
+    serde_json_1_0_17.default = true;
+  }) [ error_chain_0_11_0_features semver_0_9_0_features serde_1_0_59_features serde_derive_1_0_59_features serde_json_1_0_17_features ];
+  cc_1_0_15 = { features?(cc_1_0_15_features {}) }: cc_1_0_15_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.cc_1_0_15 or {});
+  };
+  cc_1_0_15_features = f: updateFeatures f (rec {
+    cc_1_0_15.default = (f.cc_1_0_15.default or true);
+    cc_1_0_15.rayon =
+      (f.cc_1_0_15.rayon or false) ||
+      (f.cc_1_0_15.parallel or false) ||
+      (cc_1_0_15.parallel or false);
+  }) [];
+  cfg_if_0_1_3 = { features?(cfg_if_0_1_3_features {}) }: cfg_if_0_1_3_ {};
+  cfg_if_0_1_3_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = (f.cfg_if_0_1_3.default or true);
+  }) [];
+  chrono_0_4_2 = { features?(chrono_0_4_2_features {}) }: chrono_0_4_2_ {
+    dependencies = mapFeatures features ([ num_integer_0_1_38 num_traits_0_2_4 ]
+      ++ (if features.chrono_0_4_2.serde or false then [ serde_1_0_59 ] else [])
+      ++ (if features.chrono_0_4_2.time or false then [ time_0_1_40 ] else []));
+    features = mkFeatures (features.chrono_0_4_2 or {});
+  };
+  chrono_0_4_2_features = f: updateFeatures f (rec {
+    chrono_0_4_2.clock =
+      (f.chrono_0_4_2.clock or false) ||
+      (f.chrono_0_4_2.default or false) ||
+      (chrono_0_4_2.default or false);
+    chrono_0_4_2.default = (f.chrono_0_4_2.default or true);
+    chrono_0_4_2.time =
+      (f.chrono_0_4_2.time or false) ||
+      (f.chrono_0_4_2.clock or false) ||
+      (chrono_0_4_2.clock or false);
+    num_integer_0_1_38.default = (f.num_integer_0_1_38.default or false);
+    num_traits_0_2_4.default = (f.num_traits_0_2_4.default or false);
+    serde_1_0_59.default = true;
+    time_0_1_40.default = true;
+  }) [ num_integer_0_1_38_features num_traits_0_2_4_features serde_1_0_59_features time_0_1_40_features ];
+  clap_2_31_2 = { features?(clap_2_31_2_features {}) }: clap_2_31_2_ {
+    dependencies = mapFeatures features ([ bitflags_1_0_3 textwrap_0_9_0 unicode_width_0_1_5 ]
+      ++ (if features.clap_2_31_2.atty or false then [ atty_0_2_10 ] else [])
+      ++ (if features.clap_2_31_2.strsim or false then [ strsim_0_7_0 ] else [])
+      ++ (if features.clap_2_31_2.vec_map or false then [ vec_map_0_8_1 ] else []))
+      ++ (if !(kernel == "windows") then mapFeatures features ([ ]
+      ++ (if features.clap_2_31_2.ansi_term or false then [ ansi_term_0_11_0 ] else [])) else []);
+    features = mkFeatures (features.clap_2_31_2 or {});
+  };
+  clap_2_31_2_features = f: updateFeatures f (rec {
+    ansi_term_0_11_0.default = true;
+    atty_0_2_10.default = true;
+    bitflags_1_0_3.default = true;
+    clap_2_31_2."yaml-rust" =
+      (f.clap_2_31_2."yaml-rust" or false) ||
+      (f.clap_2_31_2.yaml or false) ||
+      (clap_2_31_2.yaml or false);
+    clap_2_31_2.ansi_term =
+      (f.clap_2_31_2.ansi_term or false) ||
+      (f.clap_2_31_2.color or false) ||
+      (clap_2_31_2.color or false);
+    clap_2_31_2.atty =
+      (f.clap_2_31_2.atty or false) ||
+      (f.clap_2_31_2.color or false) ||
+      (clap_2_31_2.color or false);
+    clap_2_31_2.clippy =
+      (f.clap_2_31_2.clippy or false) ||
+      (f.clap_2_31_2.lints or false) ||
+      (clap_2_31_2.lints or false);
+    clap_2_31_2.color =
+      (f.clap_2_31_2.color or false) ||
+      (f.clap_2_31_2.default or false) ||
+      (clap_2_31_2.default or false);
+    clap_2_31_2.default = (f.clap_2_31_2.default or true);
+    clap_2_31_2.strsim =
+      (f.clap_2_31_2.strsim or false) ||
+      (f.clap_2_31_2.suggestions or false) ||
+      (clap_2_31_2.suggestions or false);
+    clap_2_31_2.suggestions =
+      (f.clap_2_31_2.suggestions or false) ||
+      (f.clap_2_31_2.default or false) ||
+      (clap_2_31_2.default or false);
+    clap_2_31_2.term_size =
+      (f.clap_2_31_2.term_size or false) ||
+      (f.clap_2_31_2.wrap_help or false) ||
+      (clap_2_31_2.wrap_help or false);
+    clap_2_31_2.vec_map =
+      (f.clap_2_31_2.vec_map or false) ||
+      (f.clap_2_31_2.default or false) ||
+      (clap_2_31_2.default or false);
+    clap_2_31_2.yaml =
+      (f.clap_2_31_2.yaml or false) ||
+      (f.clap_2_31_2.doc or false) ||
+      (clap_2_31_2.doc or false);
+    strsim_0_7_0.default = true;
+    textwrap_0_9_0.default = true;
+    textwrap_0_9_0.term_size =
+      (f.textwrap_0_9_0.term_size or false) ||
+      (clap_2_31_2.wrap_help or false) ||
+      (f.clap_2_31_2.wrap_help or false);
+    unicode_width_0_1_5.default = true;
+    vec_map_0_8_1.default = true;
+  }) [ atty_0_2_10_features bitflags_1_0_3_features strsim_0_7_0_features textwrap_0_9_0_features unicode_width_0_1_5_features vec_map_0_8_1_features ansi_term_0_11_0_features ];
+  comrak_0_2_12 = { features?(comrak_0_2_12_features {}) }: (comrak_0_2_12_ {
+    dependencies = mapFeatures features ([ entities_1_0_1 lazy_static_1_0_0 pest_1_0_6 pest_derive_1_0_7 regex_0_2_11 twoway_0_1_8 typed_arena_1_3_0 unicode_categories_0_1_1 ]
+      ++ (if features.comrak_0_2_12.clap or false then [ clap_2_31_2 ] else []));
+    features = mkFeatures (features.comrak_0_2_12 or {});
+  }).overrideAttrs (oldAttrs: rec { CARGO_PKG_DESCRIPTION = "dummy"; });
+  comrak_0_2_12_features = f: updateFeatures f (rec {
+    clap_2_31_2.default = true;
+    comrak_0_2_12.clap =
+      (f.comrak_0_2_12.clap or false) ||
+      (f.comrak_0_2_12.default or false) ||
+      (comrak_0_2_12.default or false);
+    comrak_0_2_12.default = (f.comrak_0_2_12.default or true);
+    entities_1_0_1.default = true;
+    lazy_static_1_0_0.default = true;
+    pest_1_0_6.default = true;
+    pest_derive_1_0_7.default = true;
+    regex_0_2_11.default = true;
+    twoway_0_1_8.default = true;
+    typed_arena_1_3_0.default = true;
+    unicode_categories_0_1_1.default = true;
+  }) [ clap_2_31_2_features entities_1_0_1_features lazy_static_1_0_0_features pest_1_0_6_features pest_derive_1_0_7_features regex_0_2_11_features twoway_0_1_8_features typed_arena_1_3_0_features unicode_categories_0_1_1_features ];
+  converse_0_1_0 = { features?(converse_0_1_0_features {}) }: converse_0_1_0_ {
+    dependencies = mapFeatures features ([ actix_0_5_7 actix_web_0_6_9 askama_0_6_4 chrono_0_4_2 comrak_0_2_12 diesel_1_2_2 env_logger_0_5_10 failure_0_1_1 futures_0_1_21 hyper_0_11_27 log_0_4_1 md5_0_3_7 mime_guess_2_0_0_alpha_4 pq_sys_0_4_4 r2d2_0_8_2 rand_0_4_2 reqwest_0_8_5 serde_1_0_59 serde_derive_1_0_59 serde_json_1_0_17 tokio_0_1_6 tokio_timer_0_2_3 url_1_7_0 url_serde_0_2_0 ]);
+    buildDependencies = mapFeatures features ([ askama_0_6_4 pulldown_cmark_0_1_2 ]);
+  };
+  converse_0_1_0_features = f: updateFeatures f (rec {
+    actix_0_5_7.default = true;
+    actix_web_0_6_9.default = true;
+    askama_0_6_4.default = true;
+    chrono_0_4_2.default = true;
+    chrono_0_4_2.serde = true;
+    comrak_0_2_12.default = true;
+    converse_0_1_0.default = (f.converse_0_1_0.default or true);
+    diesel_1_2_2."r2d2" = true;
+    diesel_1_2_2.chrono = true;
+    diesel_1_2_2.default = true;
+    diesel_1_2_2.postgres = true;
+    env_logger_0_5_10.default = true;
+    failure_0_1_1.default = true;
+    futures_0_1_21.default = true;
+    hyper_0_11_27.default = true;
+    log_0_4_1.default = true;
+    md5_0_3_7.default = true;
+    mime_guess_2_0_0_alpha_4.default = true;
+    pq_sys_0_4_4.default = true;
+    pulldown_cmark_0_1_2.default = true;
+    r2d2_0_8_2.default = true;
+    rand_0_4_2.default = true;
+    reqwest_0_8_5.default = true;
+    serde_1_0_59.default = true;
+    serde_derive_1_0_59.default = true;
+    serde_json_1_0_17.default = true;
+    tokio_0_1_6.default = true;
+    tokio_timer_0_2_3.default = true;
+    url_1_7_0.default = true;
+    url_serde_0_2_0.default = true;
+  }) [ actix_0_5_7_features actix_web_0_6_9_features askama_0_6_4_features chrono_0_4_2_features comrak_0_2_12_features diesel_1_2_2_features env_logger_0_5_10_features failure_0_1_1_features futures_0_1_21_features hyper_0_11_27_features log_0_4_1_features md5_0_3_7_features mime_guess_2_0_0_alpha_4_features pq_sys_0_4_4_features r2d2_0_8_2_features rand_0_4_2_features reqwest_0_8_5_features serde_1_0_59_features serde_derive_1_0_59_features serde_json_1_0_17_features tokio_0_1_6_features tokio_timer_0_2_3_features url_1_7_0_features url_serde_0_2_0_features askama_0_6_4_features pulldown_cmark_0_1_2_features ];
+  cookie_0_10_1 = { features?(cookie_0_10_1_features {}) }: cookie_0_10_1_ {
+    dependencies = mapFeatures features ([ time_0_1_40 ]
+      ++ (if features.cookie_0_10_1."base64" or false then [ base64_0_6_0 ] else [])
+      ++ (if features.cookie_0_10_1.ring or false then [ ring_0_12_1 ] else [])
+      ++ (if features.cookie_0_10_1.url or false then [ url_1_7_0 ] else []));
+    features = mkFeatures (features.cookie_0_10_1 or {});
+  };
+  cookie_0_10_1_features = f: updateFeatures f (rec {
+    base64_0_6_0.default = true;
+    cookie_0_10_1."base64" =
+      (f.cookie_0_10_1."base64" or false) ||
+      (f.cookie_0_10_1.secure or false) ||
+      (cookie_0_10_1.secure or false);
+    cookie_0_10_1.default = (f.cookie_0_10_1.default or true);
+    cookie_0_10_1.ring =
+      (f.cookie_0_10_1.ring or false) ||
+      (f.cookie_0_10_1.secure or false) ||
+      (cookie_0_10_1.secure or false);
+    cookie_0_10_1.url =
+      (f.cookie_0_10_1.url or false) ||
+      (f.cookie_0_10_1."percent-encode" or false) ||
+      (cookie_0_10_1."percent-encode" or false);
+    ring_0_12_1.default = true;
+    time_0_1_40.default = true;
+    url_1_7_0.default = true;
+  }) [ base64_0_6_0_features ring_0_12_1_features time_0_1_40_features url_1_7_0_features ];
+  core_foundation_0_2_3 = { features?(core_foundation_0_2_3_features {}) }: core_foundation_0_2_3_ {
+    dependencies = mapFeatures features ([ core_foundation_sys_0_2_3 libc_0_2_41 ]);
+  };
+  core_foundation_0_2_3_features = f: updateFeatures f (rec {
+    core_foundation_0_2_3.default = (f.core_foundation_0_2_3.default or true);
+    core_foundation_sys_0_2_3.default = true;
+    libc_0_2_41.default = true;
+  }) [ core_foundation_sys_0_2_3_features libc_0_2_41_features ];
+  core_foundation_sys_0_2_3 = { features?(core_foundation_sys_0_2_3_features {}) }: core_foundation_sys_0_2_3_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ]);
+  };
+  core_foundation_sys_0_2_3_features = f: updateFeatures f (rec {
+    core_foundation_sys_0_2_3.default = (f.core_foundation_sys_0_2_3.default or true);
+    libc_0_2_41.default = true;
+  }) [ libc_0_2_41_features ];
+  crc_1_8_1 = { features?(crc_1_8_1_features {}) }: crc_1_8_1_ {
+    buildDependencies = mapFeatures features ([ build_const_0_2_1 ]);
+    features = mkFeatures (features.crc_1_8_1 or {});
+  };
+  crc_1_8_1_features = f: updateFeatures f (rec {
+    build_const_0_2_1.default = true;
+    crc_1_8_1.default = (f.crc_1_8_1.default or true);
+    crc_1_8_1.std =
+      (f.crc_1_8_1.std or false) ||
+      (f.crc_1_8_1.default or false) ||
+      (crc_1_8_1.default or false);
+  }) [ build_const_0_2_1_features ];
+  crossbeam_channel_0_1_2 = { features?(crossbeam_channel_0_1_2_features {}) }: crossbeam_channel_0_1_2_ {
+    dependencies = mapFeatures features ([ crossbeam_epoch_0_2_0 crossbeam_utils_0_2_2 parking_lot_0_4_8 ]);
+    features = mkFeatures (features.crossbeam_channel_0_1_2 or {});
+  };
+  crossbeam_channel_0_1_2_features = f: updateFeatures f (rec {
+    crossbeam_channel_0_1_2.default = (f.crossbeam_channel_0_1_2.default or true);
+    crossbeam_epoch_0_2_0.default = true;
+    crossbeam_utils_0_2_2.default = true;
+    parking_lot_0_4_8.default = true;
+  }) [ crossbeam_epoch_0_2_0_features crossbeam_utils_0_2_2_features parking_lot_0_4_8_features ];
+  crossbeam_deque_0_2_0 = { features?(crossbeam_deque_0_2_0_features {}) }: crossbeam_deque_0_2_0_ {
+    dependencies = mapFeatures features ([ crossbeam_epoch_0_3_1 crossbeam_utils_0_2_2 ]);
+  };
+  crossbeam_deque_0_2_0_features = f: updateFeatures f (rec {
+    crossbeam_deque_0_2_0.default = (f.crossbeam_deque_0_2_0.default or true);
+    crossbeam_epoch_0_3_1.default = true;
+    crossbeam_utils_0_2_2.default = true;
+  }) [ crossbeam_epoch_0_3_1_features crossbeam_utils_0_2_2_features ];
+  crossbeam_deque_0_3_1 = { features?(crossbeam_deque_0_3_1_features {}) }: crossbeam_deque_0_3_1_ {
+    dependencies = mapFeatures features ([ crossbeam_epoch_0_4_1 crossbeam_utils_0_3_2 ]);
+  };
+  crossbeam_deque_0_3_1_features = f: updateFeatures f (rec {
+    crossbeam_deque_0_3_1.default = (f.crossbeam_deque_0_3_1.default or true);
+    crossbeam_epoch_0_4_1.default = true;
+    crossbeam_utils_0_3_2.default = true;
+  }) [ crossbeam_epoch_0_4_1_features crossbeam_utils_0_3_2_features ];
+  crossbeam_epoch_0_2_0 = { features?(crossbeam_epoch_0_2_0_features {}) }: crossbeam_epoch_0_2_0_ {
+    dependencies = mapFeatures features ([ arrayvec_0_4_7 cfg_if_0_1_3 crossbeam_utils_0_2_2 memoffset_0_1_0 scopeguard_0_3_3 ]
+      ++ (if features.crossbeam_epoch_0_2_0.lazy_static or false then [ lazy_static_0_2_11 ] else []));
+    features = mkFeatures (features.crossbeam_epoch_0_2_0 or {});
+  };
+  crossbeam_epoch_0_2_0_features = f: updateFeatures f (rec {
+    arrayvec_0_4_7.default = (f.arrayvec_0_4_7.default or false);
+    arrayvec_0_4_7.use_union =
+      (f.arrayvec_0_4_7.use_union or false) ||
+      (crossbeam_epoch_0_2_0.nightly or false) ||
+      (f.crossbeam_epoch_0_2_0.nightly or false);
+    cfg_if_0_1_3.default = true;
+    crossbeam_epoch_0_2_0.default = (f.crossbeam_epoch_0_2_0.default or true);
+    crossbeam_epoch_0_2_0.lazy_static =
+      (f.crossbeam_epoch_0_2_0.lazy_static or false) ||
+      (f.crossbeam_epoch_0_2_0.use_std or false) ||
+      (crossbeam_epoch_0_2_0.use_std or false);
+    crossbeam_epoch_0_2_0.use_std =
+      (f.crossbeam_epoch_0_2_0.use_std or false) ||
+      (f.crossbeam_epoch_0_2_0.default or false) ||
+      (crossbeam_epoch_0_2_0.default or false);
+    crossbeam_utils_0_2_2.default = (f.crossbeam_utils_0_2_2.default or false);
+    crossbeam_utils_0_2_2.use_std =
+      (f.crossbeam_utils_0_2_2.use_std or false) ||
+      (crossbeam_epoch_0_2_0.use_std or false) ||
+      (f.crossbeam_epoch_0_2_0.use_std or false);
+    lazy_static_0_2_11.default = true;
+    memoffset_0_1_0.default = (f.memoffset_0_1_0.default or false);
+    scopeguard_0_3_3.default = (f.scopeguard_0_3_3.default or false);
+  }) [ arrayvec_0_4_7_features cfg_if_0_1_3_features crossbeam_utils_0_2_2_features lazy_static_0_2_11_features memoffset_0_1_0_features scopeguard_0_3_3_features ];
+  crossbeam_epoch_0_3_1 = { features?(crossbeam_epoch_0_3_1_features {}) }: crossbeam_epoch_0_3_1_ {
+    dependencies = mapFeatures features ([ arrayvec_0_4_7 cfg_if_0_1_3 crossbeam_utils_0_2_2 memoffset_0_2_1 nodrop_0_1_12 scopeguard_0_3_3 ]
+      ++ (if features.crossbeam_epoch_0_3_1.lazy_static or false then [ lazy_static_1_0_0 ] else []));
+    features = mkFeatures (features.crossbeam_epoch_0_3_1 or {});
+  };
+  crossbeam_epoch_0_3_1_features = f: updateFeatures f (rec {
+    arrayvec_0_4_7.default = (f.arrayvec_0_4_7.default or false);
+    arrayvec_0_4_7.use_union =
+      (f.arrayvec_0_4_7.use_union or false) ||
+      (crossbeam_epoch_0_3_1.nightly or false) ||
+      (f.crossbeam_epoch_0_3_1.nightly or false);
+    cfg_if_0_1_3.default = true;
+    crossbeam_epoch_0_3_1.default = (f.crossbeam_epoch_0_3_1.default or true);
+    crossbeam_epoch_0_3_1.lazy_static =
+      (f.crossbeam_epoch_0_3_1.lazy_static or false) ||
+      (f.crossbeam_epoch_0_3_1.use_std or false) ||
+      (crossbeam_epoch_0_3_1.use_std or false);
+    crossbeam_epoch_0_3_1.use_std =
+      (f.crossbeam_epoch_0_3_1.use_std or false) ||
+      (f.crossbeam_epoch_0_3_1.default or false) ||
+      (crossbeam_epoch_0_3_1.default or false);
+    crossbeam_utils_0_2_2.default = (f.crossbeam_utils_0_2_2.default or false);
+    crossbeam_utils_0_2_2.use_std =
+      (f.crossbeam_utils_0_2_2.use_std or false) ||
+      (crossbeam_epoch_0_3_1.use_std or false) ||
+      (f.crossbeam_epoch_0_3_1.use_std or false);
+    lazy_static_1_0_0.default = true;
+    memoffset_0_2_1.default = true;
+    nodrop_0_1_12.default = (f.nodrop_0_1_12.default or false);
+    scopeguard_0_3_3.default = (f.scopeguard_0_3_3.default or false);
+  }) [ arrayvec_0_4_7_features cfg_if_0_1_3_features crossbeam_utils_0_2_2_features lazy_static_1_0_0_features memoffset_0_2_1_features nodrop_0_1_12_features scopeguard_0_3_3_features ];
+  crossbeam_epoch_0_4_1 = { features?(crossbeam_epoch_0_4_1_features {}) }: crossbeam_epoch_0_4_1_ {
+    dependencies = mapFeatures features ([ arrayvec_0_4_7 cfg_if_0_1_3 crossbeam_utils_0_3_2 memoffset_0_2_1 scopeguard_0_3_3 ]
+      ++ (if features.crossbeam_epoch_0_4_1.lazy_static or false then [ lazy_static_1_0_0 ] else []));
+    features = mkFeatures (features.crossbeam_epoch_0_4_1 or {});
+  };
+  crossbeam_epoch_0_4_1_features = f: updateFeatures f (rec {
+    arrayvec_0_4_7.default = (f.arrayvec_0_4_7.default or false);
+    arrayvec_0_4_7.use_union =
+      (f.arrayvec_0_4_7.use_union or false) ||
+      (crossbeam_epoch_0_4_1.nightly or false) ||
+      (f.crossbeam_epoch_0_4_1.nightly or false);
+    cfg_if_0_1_3.default = true;
+    crossbeam_epoch_0_4_1.default = (f.crossbeam_epoch_0_4_1.default or true);
+    crossbeam_epoch_0_4_1.lazy_static =
+      (f.crossbeam_epoch_0_4_1.lazy_static or false) ||
+      (f.crossbeam_epoch_0_4_1.use_std or false) ||
+      (crossbeam_epoch_0_4_1.use_std or false);
+    crossbeam_epoch_0_4_1.use_std =
+      (f.crossbeam_epoch_0_4_1.use_std or false) ||
+      (f.crossbeam_epoch_0_4_1.default or false) ||
+      (crossbeam_epoch_0_4_1.default or false);
+    crossbeam_utils_0_3_2.default = (f.crossbeam_utils_0_3_2.default or false);
+    crossbeam_utils_0_3_2.use_std =
+      (f.crossbeam_utils_0_3_2.use_std or false) ||
+      (crossbeam_epoch_0_4_1.use_std or false) ||
+      (f.crossbeam_epoch_0_4_1.use_std or false);
+    lazy_static_1_0_0.default = true;
+    memoffset_0_2_1.default = true;
+    scopeguard_0_3_3.default = (f.scopeguard_0_3_3.default or false);
+  }) [ arrayvec_0_4_7_features cfg_if_0_1_3_features crossbeam_utils_0_3_2_features lazy_static_1_0_0_features memoffset_0_2_1_features scopeguard_0_3_3_features ];
+  crossbeam_utils_0_2_2 = { features?(crossbeam_utils_0_2_2_features {}) }: crossbeam_utils_0_2_2_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 ]);
+    features = mkFeatures (features.crossbeam_utils_0_2_2 or {});
+  };
+  crossbeam_utils_0_2_2_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = true;
+    crossbeam_utils_0_2_2.default = (f.crossbeam_utils_0_2_2.default or true);
+    crossbeam_utils_0_2_2.use_std =
+      (f.crossbeam_utils_0_2_2.use_std or false) ||
+      (f.crossbeam_utils_0_2_2.default or false) ||
+      (crossbeam_utils_0_2_2.default or false);
+  }) [ cfg_if_0_1_3_features ];
+  crossbeam_utils_0_3_2 = { features?(crossbeam_utils_0_3_2_features {}) }: crossbeam_utils_0_3_2_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 ]);
+    features = mkFeatures (features.crossbeam_utils_0_3_2 or {});
+  };
+  crossbeam_utils_0_3_2_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = true;
+    crossbeam_utils_0_3_2.default = (f.crossbeam_utils_0_3_2.default or true);
+    crossbeam_utils_0_3_2.use_std =
+      (f.crossbeam_utils_0_3_2.use_std or false) ||
+      (f.crossbeam_utils_0_3_2.default or false) ||
+      (crossbeam_utils_0_3_2.default or false);
+  }) [ cfg_if_0_1_3_features ];
+  dbghelp_sys_0_2_0 = { features?(dbghelp_sys_0_2_0_features {}) }: dbghelp_sys_0_2_0_ {
+    dependencies = mapFeatures features ([ winapi_0_2_8 ]);
+    buildDependencies = mapFeatures features ([ winapi_build_0_1_1 ]);
+  };
+  dbghelp_sys_0_2_0_features = f: updateFeatures f (rec {
+    dbghelp_sys_0_2_0.default = (f.dbghelp_sys_0_2_0.default or true);
+    winapi_0_2_8.default = true;
+    winapi_build_0_1_1.default = true;
+  }) [ winapi_0_2_8_features winapi_build_0_1_1_features ];
+  diesel_1_2_2 = { features?(diesel_1_2_2_features {}) }: diesel_1_2_2_ {
+    dependencies = mapFeatures features ([ byteorder_1_2_3 diesel_derives_1_2_0 ]
+      ++ (if features.diesel_1_2_2.bitflags or false then [ bitflags_1_0_3 ] else [])
+      ++ (if features.diesel_1_2_2.chrono or false then [ chrono_0_4_2 ] else [])
+      ++ (if features.diesel_1_2_2."pq-sys" or false then [ pq_sys_0_4_4 ] else [])
+      ++ (if features.diesel_1_2_2."r2d2" or false then [ r2d2_0_8_2 ] else []));
+    features = mkFeatures (features.diesel_1_2_2 or {});
+  };
+  diesel_1_2_2_features = f: updateFeatures f (rec {
+    bitflags_1_0_3.default = true;
+    byteorder_1_2_3.default = true;
+    chrono_0_4_2.default = true;
+    diesel_1_2_2."128-column-tables" =
+      (f.diesel_1_2_2."128-column-tables" or false) ||
+      (f.diesel_1_2_2."x128-column-tables" or false) ||
+      (diesel_1_2_2."x128-column-tables" or false);
+    diesel_1_2_2."32-column-tables" =
+      (f.diesel_1_2_2."32-column-tables" or false) ||
+      (f.diesel_1_2_2."64-column-tables" or false) ||
+      (diesel_1_2_2."64-column-tables" or false) ||
+      (f.diesel_1_2_2.default or false) ||
+      (diesel_1_2_2.default or false) ||
+      (f.diesel_1_2_2."large-tables" or false) ||
+      (diesel_1_2_2."large-tables" or false) ||
+      (f.diesel_1_2_2."x32-column-tables" or false) ||
+      (diesel_1_2_2."x32-column-tables" or false);
+    diesel_1_2_2."64-column-tables" =
+      (f.diesel_1_2_2."64-column-tables" or false) ||
+      (f.diesel_1_2_2."128-column-tables" or false) ||
+      (diesel_1_2_2."128-column-tables" or false) ||
+      (f.diesel_1_2_2."huge-tables" or false) ||
+      (diesel_1_2_2."huge-tables" or false) ||
+      (f.diesel_1_2_2."x64-column-tables" or false) ||
+      (diesel_1_2_2."x64-column-tables" or false);
+    diesel_1_2_2."deprecated-time" =
+      (f.diesel_1_2_2."deprecated-time" or false) ||
+      (f.diesel_1_2_2.extras or false) ||
+      (diesel_1_2_2.extras or false);
+    diesel_1_2_2."libsqlite3-sys" =
+      (f.diesel_1_2_2."libsqlite3-sys" or false) ||
+      (f.diesel_1_2_2.sqlite or false) ||
+      (diesel_1_2_2.sqlite or false);
+    diesel_1_2_2."mysqlclient-sys" =
+      (f.diesel_1_2_2."mysqlclient-sys" or false) ||
+      (f.diesel_1_2_2.mysql or false) ||
+      (diesel_1_2_2.mysql or false);
+    diesel_1_2_2."network-address" =
+      (f.diesel_1_2_2."network-address" or false) ||
+      (f.diesel_1_2_2.extras or false) ||
+      (diesel_1_2_2.extras or false);
+    diesel_1_2_2."num-bigint" =
+      (f.diesel_1_2_2."num-bigint" or false) ||
+      (f.diesel_1_2_2.numeric or false) ||
+      (diesel_1_2_2.numeric or false);
+    diesel_1_2_2."num-integer" =
+      (f.diesel_1_2_2."num-integer" or false) ||
+      (f.diesel_1_2_2.numeric or false) ||
+      (diesel_1_2_2.numeric or false);
+    diesel_1_2_2."num-traits" =
+      (f.diesel_1_2_2."num-traits" or false) ||
+      (f.diesel_1_2_2.numeric or false) ||
+      (diesel_1_2_2.numeric or false);
+    diesel_1_2_2."pq-sys" =
+      (f.diesel_1_2_2."pq-sys" or false) ||
+      (f.diesel_1_2_2.postgres or false) ||
+      (diesel_1_2_2.postgres or false);
+    diesel_1_2_2."r2d2" =
+      (f.diesel_1_2_2."r2d2" or false) ||
+      (f.diesel_1_2_2.extras or false) ||
+      (diesel_1_2_2.extras or false);
+    diesel_1_2_2."with-deprecated" =
+      (f.diesel_1_2_2."with-deprecated" or false) ||
+      (f.diesel_1_2_2.default or false) ||
+      (diesel_1_2_2.default or false);
+    diesel_1_2_2.bigdecimal =
+      (f.diesel_1_2_2.bigdecimal or false) ||
+      (f.diesel_1_2_2.numeric or false) ||
+      (diesel_1_2_2.numeric or false);
+    diesel_1_2_2.bitflags =
+      (f.diesel_1_2_2.bitflags or false) ||
+      (f.diesel_1_2_2.postgres or false) ||
+      (diesel_1_2_2.postgres or false);
+    diesel_1_2_2.chrono =
+      (f.diesel_1_2_2.chrono or false) ||
+      (f.diesel_1_2_2.extras or false) ||
+      (diesel_1_2_2.extras or false);
+    diesel_1_2_2.clippy =
+      (f.diesel_1_2_2.clippy or false) ||
+      (f.diesel_1_2_2.lint or false) ||
+      (diesel_1_2_2.lint or false);
+    diesel_1_2_2.default = (f.diesel_1_2_2.default or true);
+    diesel_1_2_2.ipnetwork =
+      (f.diesel_1_2_2.ipnetwork or false) ||
+      (f.diesel_1_2_2."network-address" or false) ||
+      (diesel_1_2_2."network-address" or false);
+    diesel_1_2_2.libc =
+      (f.diesel_1_2_2.libc or false) ||
+      (f.diesel_1_2_2."network-address" or false) ||
+      (diesel_1_2_2."network-address" or false);
+    diesel_1_2_2.numeric =
+      (f.diesel_1_2_2.numeric or false) ||
+      (f.diesel_1_2_2.extras or false) ||
+      (diesel_1_2_2.extras or false);
+    diesel_1_2_2.serde_json =
+      (f.diesel_1_2_2.serde_json or false) ||
+      (f.diesel_1_2_2.extras or false) ||
+      (diesel_1_2_2.extras or false);
+    diesel_1_2_2.time =
+      (f.diesel_1_2_2.time or false) ||
+      (f.diesel_1_2_2."deprecated-time" or false) ||
+      (diesel_1_2_2."deprecated-time" or false);
+    diesel_1_2_2.url =
+      (f.diesel_1_2_2.url or false) ||
+      (f.diesel_1_2_2.mysql or false) ||
+      (diesel_1_2_2.mysql or false);
+    diesel_1_2_2.uuid =
+      (f.diesel_1_2_2.uuid or false) ||
+      (f.diesel_1_2_2.extras or false) ||
+      (diesel_1_2_2.extras or false);
+    diesel_derives_1_2_0.default = true;
+    diesel_derives_1_2_0.mysql =
+      (f.diesel_derives_1_2_0.mysql or false) ||
+      (diesel_1_2_2.mysql or false) ||
+      (f.diesel_1_2_2.mysql or false);
+    diesel_derives_1_2_0.nightly =
+      (f.diesel_derives_1_2_0.nightly or false) ||
+      (diesel_1_2_2.unstable or false) ||
+      (f.diesel_1_2_2.unstable or false);
+    diesel_derives_1_2_0.postgres =
+      (f.diesel_derives_1_2_0.postgres or false) ||
+      (diesel_1_2_2.postgres or false) ||
+      (f.diesel_1_2_2.postgres or false);
+    diesel_derives_1_2_0.sqlite =
+      (f.diesel_derives_1_2_0.sqlite or false) ||
+      (diesel_1_2_2.sqlite or false) ||
+      (f.diesel_1_2_2.sqlite or false);
+    pq_sys_0_4_4.default = true;
+    r2d2_0_8_2.default = true;
+  }) [ bitflags_1_0_3_features byteorder_1_2_3_features chrono_0_4_2_features diesel_derives_1_2_0_features pq_sys_0_4_4_features r2d2_0_8_2_features ];
+  diesel_derives_1_2_0 = { features?(diesel_derives_1_2_0_features {}) }: diesel_derives_1_2_0_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_2_3 quote_0_4_2 syn_0_12_15 ]);
+    features = mkFeatures (features.diesel_derives_1_2_0 or {});
+  };
+  diesel_derives_1_2_0_features = f: updateFeatures f (rec {
+    diesel_derives_1_2_0.clippy =
+      (f.diesel_derives_1_2_0.clippy or false) ||
+      (f.diesel_derives_1_2_0.lint or false) ||
+      (diesel_derives_1_2_0.lint or false);
+    diesel_derives_1_2_0.default = (f.diesel_derives_1_2_0.default or true);
+    proc_macro2_0_2_3.default = true;
+    proc_macro2_0_2_3.nightly =
+      (f.proc_macro2_0_2_3.nightly or false) ||
+      (diesel_derives_1_2_0.nightly or false) ||
+      (f.diesel_derives_1_2_0.nightly or false);
+    quote_0_4_2.default = true;
+    syn_0_12_15.default = true;
+    syn_0_12_15.fold = true;
+    syn_0_12_15.full = true;
+  }) [ proc_macro2_0_2_3_features quote_0_4_2_features syn_0_12_15_features ];
+  dtoa_0_4_2 = { features?(dtoa_0_4_2_features {}) }: dtoa_0_4_2_ {};
+  dtoa_0_4_2_features = f: updateFeatures f (rec {
+    dtoa_0_4_2.default = (f.dtoa_0_4_2.default or true);
+  }) [];
+  encoding_0_2_33 = { features?(encoding_0_2_33_features {}) }: encoding_0_2_33_ {
+    dependencies = mapFeatures features ([ encoding_index_japanese_1_20141219_5 encoding_index_korean_1_20141219_5 encoding_index_simpchinese_1_20141219_5 encoding_index_singlebyte_1_20141219_5 encoding_index_tradchinese_1_20141219_5 ]);
+  };
+  encoding_0_2_33_features = f: updateFeatures f (rec {
+    encoding_0_2_33.default = (f.encoding_0_2_33.default or true);
+    encoding_index_japanese_1_20141219_5.default = true;
+    encoding_index_korean_1_20141219_5.default = true;
+    encoding_index_simpchinese_1_20141219_5.default = true;
+    encoding_index_singlebyte_1_20141219_5.default = true;
+    encoding_index_tradchinese_1_20141219_5.default = true;
+  }) [ encoding_index_japanese_1_20141219_5_features encoding_index_korean_1_20141219_5_features encoding_index_simpchinese_1_20141219_5_features encoding_index_singlebyte_1_20141219_5_features encoding_index_tradchinese_1_20141219_5_features ];
+  encoding_index_japanese_1_20141219_5 = { features?(encoding_index_japanese_1_20141219_5_features {}) }: encoding_index_japanese_1_20141219_5_ {
+    dependencies = mapFeatures features ([ encoding_index_tests_0_1_4 ]);
+  };
+  encoding_index_japanese_1_20141219_5_features = f: updateFeatures f (rec {
+    encoding_index_japanese_1_20141219_5.default = (f.encoding_index_japanese_1_20141219_5.default or true);
+    encoding_index_tests_0_1_4.default = true;
+  }) [ encoding_index_tests_0_1_4_features ];
+  encoding_index_korean_1_20141219_5 = { features?(encoding_index_korean_1_20141219_5_features {}) }: encoding_index_korean_1_20141219_5_ {
+    dependencies = mapFeatures features ([ encoding_index_tests_0_1_4 ]);
+  };
+  encoding_index_korean_1_20141219_5_features = f: updateFeatures f (rec {
+    encoding_index_korean_1_20141219_5.default = (f.encoding_index_korean_1_20141219_5.default or true);
+    encoding_index_tests_0_1_4.default = true;
+  }) [ encoding_index_tests_0_1_4_features ];
+  encoding_index_simpchinese_1_20141219_5 = { features?(encoding_index_simpchinese_1_20141219_5_features {}) }: encoding_index_simpchinese_1_20141219_5_ {
+    dependencies = mapFeatures features ([ encoding_index_tests_0_1_4 ]);
+  };
+  encoding_index_simpchinese_1_20141219_5_features = f: updateFeatures f (rec {
+    encoding_index_simpchinese_1_20141219_5.default = (f.encoding_index_simpchinese_1_20141219_5.default or true);
+    encoding_index_tests_0_1_4.default = true;
+  }) [ encoding_index_tests_0_1_4_features ];
+  encoding_index_singlebyte_1_20141219_5 = { features?(encoding_index_singlebyte_1_20141219_5_features {}) }: encoding_index_singlebyte_1_20141219_5_ {
+    dependencies = mapFeatures features ([ encoding_index_tests_0_1_4 ]);
+  };
+  encoding_index_singlebyte_1_20141219_5_features = f: updateFeatures f (rec {
+    encoding_index_singlebyte_1_20141219_5.default = (f.encoding_index_singlebyte_1_20141219_5.default or true);
+    encoding_index_tests_0_1_4.default = true;
+  }) [ encoding_index_tests_0_1_4_features ];
+  encoding_index_tradchinese_1_20141219_5 = { features?(encoding_index_tradchinese_1_20141219_5_features {}) }: encoding_index_tradchinese_1_20141219_5_ {
+    dependencies = mapFeatures features ([ encoding_index_tests_0_1_4 ]);
+  };
+  encoding_index_tradchinese_1_20141219_5_features = f: updateFeatures f (rec {
+    encoding_index_tests_0_1_4.default = true;
+    encoding_index_tradchinese_1_20141219_5.default = (f.encoding_index_tradchinese_1_20141219_5.default or true);
+  }) [ encoding_index_tests_0_1_4_features ];
+  encoding_index_tests_0_1_4 = { features?(encoding_index_tests_0_1_4_features {}) }: encoding_index_tests_0_1_4_ {};
+  encoding_index_tests_0_1_4_features = f: updateFeatures f (rec {
+    encoding_index_tests_0_1_4.default = (f.encoding_index_tests_0_1_4.default or true);
+  }) [];
+  encoding_rs_0_7_2 = { features?(encoding_rs_0_7_2_features {}) }: encoding_rs_0_7_2_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 ]);
+    features = mkFeatures (features.encoding_rs_0_7_2 or {});
+  };
+  encoding_rs_0_7_2_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = true;
+    encoding_rs_0_7_2.default = (f.encoding_rs_0_7_2.default or true);
+    encoding_rs_0_7_2.simd =
+      (f.encoding_rs_0_7_2.simd or false) ||
+      (f.encoding_rs_0_7_2."simd-accel" or false) ||
+      (encoding_rs_0_7_2."simd-accel" or false);
+  }) [ cfg_if_0_1_3_features ];
+  entities_1_0_1 = { features?(entities_1_0_1_features {}) }: entities_1_0_1_ {};
+  entities_1_0_1_features = f: updateFeatures f (rec {
+    entities_1_0_1.default = (f.entities_1_0_1.default or true);
+  }) [];
+  env_logger_0_5_10 = { features?(env_logger_0_5_10_features {}) }: env_logger_0_5_10_ {
+    dependencies = mapFeatures features ([ atty_0_2_10 humantime_1_1_1 log_0_4_1 termcolor_0_3_6 ]
+      ++ (if features.env_logger_0_5_10.regex or false then [ regex_1_0_0 ] else []));
+    features = mkFeatures (features.env_logger_0_5_10 or {});
+  };
+  env_logger_0_5_10_features = f: updateFeatures f (rec {
+    atty_0_2_10.default = true;
+    env_logger_0_5_10.default = (f.env_logger_0_5_10.default or true);
+    env_logger_0_5_10.regex =
+      (f.env_logger_0_5_10.regex or false) ||
+      (f.env_logger_0_5_10.default or false) ||
+      (env_logger_0_5_10.default or false);
+    humantime_1_1_1.default = true;
+    log_0_4_1.default = true;
+    log_0_4_1.std = true;
+    regex_1_0_0.default = true;
+    termcolor_0_3_6.default = true;
+  }) [ atty_0_2_10_features humantime_1_1_1_features log_0_4_1_features regex_1_0_0_features termcolor_0_3_6_features ];
+  error_chain_0_1_12 = { features?(error_chain_0_1_12_features {}) }: error_chain_0_1_12_ {
+    dependencies = mapFeatures features ([ backtrace_0_2_3 ]);
+  };
+  error_chain_0_1_12_features = f: updateFeatures f (rec {
+    backtrace_0_2_3.default = true;
+    error_chain_0_1_12.default = (f.error_chain_0_1_12.default or true);
+  }) [ backtrace_0_2_3_features ];
+  error_chain_0_8_1 = { features?(error_chain_0_8_1_features {}) }: error_chain_0_8_1_ {
+    dependencies = mapFeatures features ([ ]
+      ++ (if features.error_chain_0_8_1.backtrace or false then [ backtrace_0_3_7 ] else []));
+    features = mkFeatures (features.error_chain_0_8_1 or {});
+  };
+  error_chain_0_8_1_features = f: updateFeatures f (rec {
+    backtrace_0_3_7.default = true;
+    error_chain_0_8_1.backtrace =
+      (f.error_chain_0_8_1.backtrace or false) ||
+      (f.error_chain_0_8_1.default or false) ||
+      (error_chain_0_8_1.default or false);
+    error_chain_0_8_1.default = (f.error_chain_0_8_1.default or true);
+    error_chain_0_8_1.example_generated =
+      (f.error_chain_0_8_1.example_generated or false) ||
+      (f.error_chain_0_8_1.default or false) ||
+      (error_chain_0_8_1.default or false);
+  }) [ backtrace_0_3_7_features ];
+  error_chain_0_11_0 = { features?(error_chain_0_11_0_features {}) }: error_chain_0_11_0_ {
+    dependencies = mapFeatures features ([ ]
+      ++ (if features.error_chain_0_11_0.backtrace or false then [ backtrace_0_3_7 ] else []));
+    features = mkFeatures (features.error_chain_0_11_0 or {});
+  };
+  error_chain_0_11_0_features = f: updateFeatures f (rec {
+    backtrace_0_3_7.default = true;
+    error_chain_0_11_0.backtrace =
+      (f.error_chain_0_11_0.backtrace or false) ||
+      (f.error_chain_0_11_0.default or false) ||
+      (error_chain_0_11_0.default or false);
+    error_chain_0_11_0.default = (f.error_chain_0_11_0.default or true);
+    error_chain_0_11_0.example_generated =
+      (f.error_chain_0_11_0.example_generated or false) ||
+      (f.error_chain_0_11_0.default or false) ||
+      (error_chain_0_11_0.default or false);
+  }) [ backtrace_0_3_7_features ];
+  failure_0_1_1 = { features?(failure_0_1_1_features {}) }: failure_0_1_1_ {
+    dependencies = mapFeatures features ([ ]
+      ++ (if features.failure_0_1_1.backtrace or false then [ backtrace_0_3_7 ] else [])
+      ++ (if features.failure_0_1_1.failure_derive or false then [ failure_derive_0_1_1 ] else []));
+    features = mkFeatures (features.failure_0_1_1 or {});
+  };
+  failure_0_1_1_features = f: updateFeatures f (rec {
+    backtrace_0_3_7.default = true;
+    failure_0_1_1.backtrace =
+      (f.failure_0_1_1.backtrace or false) ||
+      (f.failure_0_1_1.std or false) ||
+      (failure_0_1_1.std or false);
+    failure_0_1_1.default = (f.failure_0_1_1.default or true);
+    failure_0_1_1.derive =
+      (f.failure_0_1_1.derive or false) ||
+      (f.failure_0_1_1.default or false) ||
+      (failure_0_1_1.default or false);
+    failure_0_1_1.failure_derive =
+      (f.failure_0_1_1.failure_derive or false) ||
+      (f.failure_0_1_1.derive or false) ||
+      (failure_0_1_1.derive or false);
+    failure_0_1_1.std =
+      (f.failure_0_1_1.std or false) ||
+      (f.failure_0_1_1.default or false) ||
+      (failure_0_1_1.default or false);
+    failure_derive_0_1_1.default = true;
+  }) [ backtrace_0_3_7_features failure_derive_0_1_1_features ];
+  failure_derive_0_1_1 = { features?(failure_derive_0_1_1_features {}) }: failure_derive_0_1_1_ {
+    dependencies = mapFeatures features ([ quote_0_3_15 syn_0_11_11 synstructure_0_6_1 ]);
+    features = mkFeatures (features.failure_derive_0_1_1 or {});
+  };
+  failure_derive_0_1_1_features = f: updateFeatures f (rec {
+    failure_derive_0_1_1.default = (f.failure_derive_0_1_1.default or true);
+    failure_derive_0_1_1.std =
+      (f.failure_derive_0_1_1.std or false) ||
+      (f.failure_derive_0_1_1.default or false) ||
+      (failure_derive_0_1_1.default or false);
+    quote_0_3_15.default = true;
+    syn_0_11_11.default = true;
+    synstructure_0_6_1.default = true;
+  }) [ quote_0_3_15_features syn_0_11_11_features synstructure_0_6_1_features ];
+  flate2_1_0_1 = { features?(flate2_1_0_1_features {}) }: flate2_1_0_1_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ]
+      ++ (if features.flate2_1_0_1."miniz-sys" or false then [ miniz_sys_0_1_10 ] else []));
+    features = mkFeatures (features.flate2_1_0_1 or {});
+  };
+  flate2_1_0_1_features = f: updateFeatures f (rec {
+    flate2_1_0_1."libz-sys" =
+      (f.flate2_1_0_1."libz-sys" or false) ||
+      (f.flate2_1_0_1.zlib or false) ||
+      (flate2_1_0_1.zlib or false);
+    flate2_1_0_1."miniz-sys" =
+      (f.flate2_1_0_1."miniz-sys" or false) ||
+      (f.flate2_1_0_1.default or false) ||
+      (flate2_1_0_1.default or false);
+    flate2_1_0_1."tokio-io" =
+      (f.flate2_1_0_1."tokio-io" or false) ||
+      (f.flate2_1_0_1.tokio or false) ||
+      (flate2_1_0_1.tokio or false);
+    flate2_1_0_1.default = (f.flate2_1_0_1.default or true);
+    flate2_1_0_1.futures =
+      (f.flate2_1_0_1.futures or false) ||
+      (f.flate2_1_0_1.tokio or false) ||
+      (flate2_1_0_1.tokio or false);
+    flate2_1_0_1.miniz_oxide_c_api =
+      (f.flate2_1_0_1.miniz_oxide_c_api or false) ||
+      (f.flate2_1_0_1.rust_backend or false) ||
+      (flate2_1_0_1.rust_backend or false);
+    libc_0_2_41.default = true;
+    miniz_sys_0_1_10.default = true;
+  }) [ libc_0_2_41_features miniz_sys_0_1_10_features ];
+  fnv_1_0_6 = { features?(fnv_1_0_6_features {}) }: fnv_1_0_6_ {};
+  fnv_1_0_6_features = f: updateFeatures f (rec {
+    fnv_1_0_6.default = (f.fnv_1_0_6.default or true);
+  }) [];
+  foreign_types_0_3_2 = { features?(foreign_types_0_3_2_features {}) }: foreign_types_0_3_2_ {
+    dependencies = mapFeatures features ([ foreign_types_shared_0_1_1 ]);
+  };
+  foreign_types_0_3_2_features = f: updateFeatures f (rec {
+    foreign_types_0_3_2.default = (f.foreign_types_0_3_2.default or true);
+    foreign_types_shared_0_1_1.default = true;
+  }) [ foreign_types_shared_0_1_1_features ];
+  foreign_types_shared_0_1_1 = { features?(foreign_types_shared_0_1_1_features {}) }: foreign_types_shared_0_1_1_ {};
+  foreign_types_shared_0_1_1_features = f: updateFeatures f (rec {
+    foreign_types_shared_0_1_1.default = (f.foreign_types_shared_0_1_1.default or true);
+  }) [];
+  fuchsia_zircon_0_3_3 = { features?(fuchsia_zircon_0_3_3_features {}) }: fuchsia_zircon_0_3_3_ {
+    dependencies = mapFeatures features ([ bitflags_1_0_3 fuchsia_zircon_sys_0_3_3 ]);
+  };
+  fuchsia_zircon_0_3_3_features = f: updateFeatures f (rec {
+    bitflags_1_0_3.default = true;
+    fuchsia_zircon_0_3_3.default = (f.fuchsia_zircon_0_3_3.default or true);
+    fuchsia_zircon_sys_0_3_3.default = true;
+  }) [ bitflags_1_0_3_features fuchsia_zircon_sys_0_3_3_features ];
+  fuchsia_zircon_sys_0_3_3 = { features?(fuchsia_zircon_sys_0_3_3_features {}) }: fuchsia_zircon_sys_0_3_3_ {};
+  fuchsia_zircon_sys_0_3_3_features = f: updateFeatures f (rec {
+    fuchsia_zircon_sys_0_3_3.default = (f.fuchsia_zircon_sys_0_3_3.default or true);
+  }) [];
+  futures_0_1_21 = { features?(futures_0_1_21_features {}) }: futures_0_1_21_ {
+    features = mkFeatures (features.futures_0_1_21 or {});
+  };
+  futures_0_1_21_features = f: updateFeatures f (rec {
+    futures_0_1_21."with-deprecated" =
+      (f.futures_0_1_21."with-deprecated" or false) ||
+      (f.futures_0_1_21.default or false) ||
+      (futures_0_1_21.default or false);
+    futures_0_1_21.default = (f.futures_0_1_21.default or true);
+    futures_0_1_21.use_std =
+      (f.futures_0_1_21.use_std or false) ||
+      (f.futures_0_1_21.default or false) ||
+      (futures_0_1_21.default or false);
+  }) [];
+  futures_cpupool_0_1_8 = { features?(futures_cpupool_0_1_8_features {}) }: futures_cpupool_0_1_8_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 num_cpus_1_8_0 ]);
+    features = mkFeatures (features.futures_cpupool_0_1_8 or {});
+  };
+  futures_cpupool_0_1_8_features = f: updateFeatures f (rec {
+    futures_0_1_21."with-deprecated" =
+      (f.futures_0_1_21."with-deprecated" or false) ||
+      (futures_cpupool_0_1_8."with-deprecated" or false) ||
+      (f.futures_cpupool_0_1_8."with-deprecated" or false);
+    futures_0_1_21.default = (f.futures_0_1_21.default or false);
+    futures_0_1_21.use_std = true;
+    futures_cpupool_0_1_8."with-deprecated" =
+      (f.futures_cpupool_0_1_8."with-deprecated" or false) ||
+      (f.futures_cpupool_0_1_8.default or false) ||
+      (futures_cpupool_0_1_8.default or false);
+    futures_cpupool_0_1_8.default = (f.futures_cpupool_0_1_8.default or true);
+    num_cpus_1_8_0.default = true;
+  }) [ futures_0_1_21_features num_cpus_1_8_0_features ];
+  gcc_0_3_54 = { features?(gcc_0_3_54_features {}) }: gcc_0_3_54_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.gcc_0_3_54 or {});
+  };
+  gcc_0_3_54_features = f: updateFeatures f (rec {
+    gcc_0_3_54.default = (f.gcc_0_3_54.default or true);
+    gcc_0_3_54.rayon =
+      (f.gcc_0_3_54.rayon or false) ||
+      (f.gcc_0_3_54.parallel or false) ||
+      (gcc_0_3_54.parallel or false);
+  }) [];
+  getopts_0_2_17 = { features?(getopts_0_2_17_features {}) }: getopts_0_2_17_ {};
+  getopts_0_2_17_features = f: updateFeatures f (rec {
+    getopts_0_2_17.default = (f.getopts_0_2_17.default or true);
+  }) [];
+  glob_0_2_11 = { features?(glob_0_2_11_features {}) }: glob_0_2_11_ {};
+  glob_0_2_11_features = f: updateFeatures f (rec {
+    glob_0_2_11.default = (f.glob_0_2_11.default or true);
+  }) [];
+  h2_0_1_7 = { features?(h2_0_1_7_features {}) }: h2_0_1_7_ {
+    dependencies = mapFeatures features ([ byteorder_1_2_3 bytes_0_4_7 fnv_1_0_6 futures_0_1_21 http_0_1_5 indexmap_1_0_1 log_0_4_1 slab_0_4_0 string_0_1_0 tokio_io_0_1_6 ]);
+    features = mkFeatures (features.h2_0_1_7 or {});
+  };
+  h2_0_1_7_features = f: updateFeatures f (rec {
+    byteorder_1_2_3.default = true;
+    bytes_0_4_7.default = true;
+    fnv_1_0_6.default = true;
+    futures_0_1_21.default = true;
+    h2_0_1_7.default = (f.h2_0_1_7.default or true);
+    http_0_1_5.default = true;
+    indexmap_1_0_1.default = true;
+    log_0_4_1.default = true;
+    slab_0_4_0.default = true;
+    string_0_1_0.default = true;
+    tokio_io_0_1_6.default = true;
+  }) [ byteorder_1_2_3_features bytes_0_4_7_features fnv_1_0_6_features futures_0_1_21_features http_0_1_5_features indexmap_1_0_1_features log_0_4_1_features slab_0_4_0_features string_0_1_0_features tokio_io_0_1_6_features ];
+  hostname_0_1_4 = { features?(hostname_0_1_4_features {}) }: hostname_0_1_4_ {
+    dependencies = (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winutil_0_1_1 ]) else []);
+    features = mkFeatures (features.hostname_0_1_4 or {});
+  };
+  hostname_0_1_4_features = f: updateFeatures f (rec {
+    hostname_0_1_4.default = (f.hostname_0_1_4.default or true);
+    libc_0_2_41.default = true;
+    winutil_0_1_1.default = true;
+  }) [ libc_0_2_41_features winutil_0_1_1_features ];
+  http_0_1_5 = { features?(http_0_1_5_features {}) }: http_0_1_5_ {
+    dependencies = mapFeatures features ([ bytes_0_4_7 fnv_1_0_6 ]);
+  };
+  http_0_1_5_features = f: updateFeatures f (rec {
+    bytes_0_4_7.default = true;
+    fnv_1_0_6.default = true;
+    http_0_1_5.default = (f.http_0_1_5.default or true);
+  }) [ bytes_0_4_7_features fnv_1_0_6_features ];
+  http_range_0_1_1 = { features?(http_range_0_1_1_features {}) }: http_range_0_1_1_ {};
+  http_range_0_1_1_features = f: updateFeatures f (rec {
+    http_range_0_1_1.default = (f.http_range_0_1_1.default or true);
+  }) [];
+  httparse_1_2_4 = { features?(httparse_1_2_4_features {}) }: httparse_1_2_4_ {
+    features = mkFeatures (features.httparse_1_2_4 or {});
+  };
+  httparse_1_2_4_features = f: updateFeatures f (rec {
+    httparse_1_2_4.default = (f.httparse_1_2_4.default or true);
+    httparse_1_2_4.std =
+      (f.httparse_1_2_4.std or false) ||
+      (f.httparse_1_2_4.default or false) ||
+      (httparse_1_2_4.default or false);
+  }) [];
+  humantime_1_1_1 = { features?(humantime_1_1_1_features {}) }: humantime_1_1_1_ {
+    dependencies = mapFeatures features ([ quick_error_1_2_1 ]);
+  };
+  humantime_1_1_1_features = f: updateFeatures f (rec {
+    humantime_1_1_1.default = (f.humantime_1_1_1.default or true);
+    quick_error_1_2_1.default = true;
+  }) [ quick_error_1_2_1_features ];
+  hyper_0_11_27 = { features?(hyper_0_11_27_features {}) }: hyper_0_11_27_ {
+    dependencies = mapFeatures features ([ base64_0_9_1 bytes_0_4_7 futures_0_1_21 futures_cpupool_0_1_8 httparse_1_2_4 iovec_0_1_2 language_tags_0_2_2 log_0_4_1 mime_0_3_7 net2_0_2_32 percent_encoding_1_0_1 relay_0_1_1 time_0_1_40 tokio_core_0_1_17 tokio_io_0_1_6 tokio_service_0_1_0 unicase_2_1_0 want_0_0_4 ]
+      ++ (if features.hyper_0_11_27."tokio-proto" or false then [ tokio_proto_0_1_1 ] else []));
+    features = mkFeatures (features.hyper_0_11_27 or {});
+  };
+  hyper_0_11_27_features = f: updateFeatures f (rec {
+    base64_0_9_1.default = true;
+    bytes_0_4_7.default = true;
+    futures_0_1_21.default = true;
+    futures_cpupool_0_1_8.default = true;
+    httparse_1_2_4.default = true;
+    hyper_0_11_27."server-proto" =
+      (f.hyper_0_11_27."server-proto" or false) ||
+      (f.hyper_0_11_27.default or false) ||
+      (hyper_0_11_27.default or false);
+    hyper_0_11_27."tokio-proto" =
+      (f.hyper_0_11_27."tokio-proto" or false) ||
+      (f.hyper_0_11_27."server-proto" or false) ||
+      (hyper_0_11_27."server-proto" or false);
+    hyper_0_11_27.default = (f.hyper_0_11_27.default or true);
+    hyper_0_11_27.http =
+      (f.hyper_0_11_27.http or false) ||
+      (f.hyper_0_11_27.compat or false) ||
+      (hyper_0_11_27.compat or false);
+    iovec_0_1_2.default = true;
+    language_tags_0_2_2.default = true;
+    log_0_4_1.default = true;
+    mime_0_3_7.default = true;
+    net2_0_2_32.default = true;
+    percent_encoding_1_0_1.default = true;
+    relay_0_1_1.default = true;
+    time_0_1_40.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_proto_0_1_1.default = true;
+    tokio_service_0_1_0.default = true;
+    unicase_2_1_0.default = true;
+    want_0_0_4.default = true;
+  }) [ base64_0_9_1_features bytes_0_4_7_features futures_0_1_21_features futures_cpupool_0_1_8_features httparse_1_2_4_features iovec_0_1_2_features language_tags_0_2_2_features log_0_4_1_features mime_0_3_7_features net2_0_2_32_features percent_encoding_1_0_1_features relay_0_1_1_features time_0_1_40_features tokio_core_0_1_17_features tokio_io_0_1_6_features tokio_proto_0_1_1_features tokio_service_0_1_0_features unicase_2_1_0_features want_0_0_4_features ];
+  hyper_tls_0_1_3 = { features?(hyper_tls_0_1_3_features {}) }: hyper_tls_0_1_3_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 hyper_0_11_27 native_tls_0_1_5 tokio_core_0_1_17 tokio_io_0_1_6 tokio_service_0_1_0 tokio_tls_0_1_4 ]);
+  };
+  hyper_tls_0_1_3_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    hyper_0_11_27.default = true;
+    hyper_tls_0_1_3.default = (f.hyper_tls_0_1_3.default or true);
+    native_tls_0_1_5.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_service_0_1_0.default = true;
+    tokio_tls_0_1_4.default = true;
+  }) [ futures_0_1_21_features hyper_0_11_27_features native_tls_0_1_5_features tokio_core_0_1_17_features tokio_io_0_1_6_features tokio_service_0_1_0_features tokio_tls_0_1_4_features ];
+  idna_0_1_4 = { features?(idna_0_1_4_features {}) }: idna_0_1_4_ {
+    dependencies = mapFeatures features ([ matches_0_1_6 unicode_bidi_0_3_4 unicode_normalization_0_1_7 ]);
+  };
+  idna_0_1_4_features = f: updateFeatures f (rec {
+    idna_0_1_4.default = (f.idna_0_1_4.default or true);
+    matches_0_1_6.default = true;
+    unicode_bidi_0_3_4.default = true;
+    unicode_normalization_0_1_7.default = true;
+  }) [ matches_0_1_6_features unicode_bidi_0_3_4_features unicode_normalization_0_1_7_features ];
+  indexmap_1_0_1 = { features?(indexmap_1_0_1_features {}) }: indexmap_1_0_1_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.indexmap_1_0_1 or {});
+  };
+  indexmap_1_0_1_features = f: updateFeatures f (rec {
+    indexmap_1_0_1.default = (f.indexmap_1_0_1.default or true);
+    indexmap_1_0_1.serde =
+      (f.indexmap_1_0_1.serde or false) ||
+      (f.indexmap_1_0_1."serde-1" or false) ||
+      (indexmap_1_0_1."serde-1" or false);
+  }) [];
+  iovec_0_1_2 = { features?(iovec_0_1_2_features {}) }: iovec_0_1_2_ {
+    dependencies = (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_2_8 ]) else []);
+  };
+  iovec_0_1_2_features = f: updateFeatures f (rec {
+    iovec_0_1_2.default = (f.iovec_0_1_2.default or true);
+    libc_0_2_41.default = true;
+    winapi_0_2_8.default = true;
+  }) [ libc_0_2_41_features winapi_0_2_8_features ];
+  ipconfig_0_1_6 = { features?(ipconfig_0_1_6_features {}) }: ipconfig_0_1_6_ {
+    dependencies = (if kernel == "windows" then mapFeatures features ([ error_chain_0_8_1 socket2_0_3_5 widestring_0_2_2 winapi_0_3_4 winreg_0_5_0 ]) else []);
+  };
+  ipconfig_0_1_6_features = f: updateFeatures f (rec {
+    error_chain_0_8_1.default = true;
+    ipconfig_0_1_6.default = (f.ipconfig_0_1_6.default or true);
+    socket2_0_3_5.default = true;
+    widestring_0_2_2.default = true;
+    winapi_0_3_4.default = true;
+    winreg_0_5_0.default = true;
+  }) [ error_chain_0_8_1_features socket2_0_3_5_features widestring_0_2_2_features winapi_0_3_4_features winreg_0_5_0_features ];
+  itoa_0_4_1 = { features?(itoa_0_4_1_features {}) }: itoa_0_4_1_ {
+    features = mkFeatures (features.itoa_0_4_1 or {});
+  };
+  itoa_0_4_1_features = f: updateFeatures f (rec {
+    itoa_0_4_1.default = (f.itoa_0_4_1.default or true);
+    itoa_0_4_1.std =
+      (f.itoa_0_4_1.std or false) ||
+      (f.itoa_0_4_1.default or false) ||
+      (itoa_0_4_1.default or false);
+  }) [];
+  kernel32_sys_0_2_2 = { features?(kernel32_sys_0_2_2_features {}) }: kernel32_sys_0_2_2_ {
+    dependencies = mapFeatures features ([ winapi_0_2_8 ]);
+    buildDependencies = mapFeatures features ([ winapi_build_0_1_1 ]);
+  };
+  kernel32_sys_0_2_2_features = f: updateFeatures f (rec {
+    kernel32_sys_0_2_2.default = (f.kernel32_sys_0_2_2.default or true);
+    winapi_0_2_8.default = true;
+    winapi_build_0_1_1.default = true;
+  }) [ winapi_0_2_8_features winapi_build_0_1_1_features ];
+  language_tags_0_2_2 = { features?(language_tags_0_2_2_features {}) }: language_tags_0_2_2_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.language_tags_0_2_2 or {});
+  };
+  language_tags_0_2_2_features = f: updateFeatures f (rec {
+    language_tags_0_2_2.default = (f.language_tags_0_2_2.default or true);
+    language_tags_0_2_2.heapsize =
+      (f.language_tags_0_2_2.heapsize or false) ||
+      (f.language_tags_0_2_2.heap_size or false) ||
+      (language_tags_0_2_2.heap_size or false);
+    language_tags_0_2_2.heapsize_plugin =
+      (f.language_tags_0_2_2.heapsize_plugin or false) ||
+      (f.language_tags_0_2_2.heap_size or false) ||
+      (language_tags_0_2_2.heap_size or false);
+  }) [];
+  lazy_static_0_2_11 = { features?(lazy_static_0_2_11_features {}) }: lazy_static_0_2_11_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.lazy_static_0_2_11 or {});
+  };
+  lazy_static_0_2_11_features = f: updateFeatures f (rec {
+    lazy_static_0_2_11.compiletest_rs =
+      (f.lazy_static_0_2_11.compiletest_rs or false) ||
+      (f.lazy_static_0_2_11.compiletest or false) ||
+      (lazy_static_0_2_11.compiletest or false);
+    lazy_static_0_2_11.default = (f.lazy_static_0_2_11.default or true);
+    lazy_static_0_2_11.nightly =
+      (f.lazy_static_0_2_11.nightly or false) ||
+      (f.lazy_static_0_2_11.spin_no_std or false) ||
+      (lazy_static_0_2_11.spin_no_std or false);
+    lazy_static_0_2_11.spin =
+      (f.lazy_static_0_2_11.spin or false) ||
+      (f.lazy_static_0_2_11.spin_no_std or false) ||
+      (lazy_static_0_2_11.spin_no_std or false);
+  }) [];
+  lazy_static_1_0_0 = { features?(lazy_static_1_0_0_features {}) }: lazy_static_1_0_0_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.lazy_static_1_0_0 or {});
+  };
+  lazy_static_1_0_0_features = f: updateFeatures f (rec {
+    lazy_static_1_0_0.compiletest_rs =
+      (f.lazy_static_1_0_0.compiletest_rs or false) ||
+      (f.lazy_static_1_0_0.compiletest or false) ||
+      (lazy_static_1_0_0.compiletest or false);
+    lazy_static_1_0_0.default = (f.lazy_static_1_0_0.default or true);
+    lazy_static_1_0_0.nightly =
+      (f.lazy_static_1_0_0.nightly or false) ||
+      (f.lazy_static_1_0_0.spin_no_std or false) ||
+      (lazy_static_1_0_0.spin_no_std or false);
+    lazy_static_1_0_0.spin =
+      (f.lazy_static_1_0_0.spin or false) ||
+      (f.lazy_static_1_0_0.spin_no_std or false) ||
+      (lazy_static_1_0_0.spin_no_std or false);
+  }) [];
+  lazycell_0_6_0 = { features?(lazycell_0_6_0_features {}) }: lazycell_0_6_0_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.lazycell_0_6_0 or {});
+  };
+  lazycell_0_6_0_features = f: updateFeatures f (rec {
+    lazycell_0_6_0.clippy =
+      (f.lazycell_0_6_0.clippy or false) ||
+      (f.lazycell_0_6_0."nightly-testing" or false) ||
+      (lazycell_0_6_0."nightly-testing" or false);
+    lazycell_0_6_0.default = (f.lazycell_0_6_0.default or true);
+    lazycell_0_6_0.nightly =
+      (f.lazycell_0_6_0.nightly or false) ||
+      (f.lazycell_0_6_0."nightly-testing" or false) ||
+      (lazycell_0_6_0."nightly-testing" or false);
+  }) [];
+  libc_0_2_41 = { features?(libc_0_2_41_features {}) }: libc_0_2_41_ {
+    features = mkFeatures (features.libc_0_2_41 or {});
+  };
+  libc_0_2_41_features = f: updateFeatures f (rec {
+    libc_0_2_41.default = (f.libc_0_2_41.default or true);
+    libc_0_2_41.use_std =
+      (f.libc_0_2_41.use_std or false) ||
+      (f.libc_0_2_41.default or false) ||
+      (libc_0_2_41.default or false);
+  }) [];
+  libflate_0_1_14 = { features?(libflate_0_1_14_features {}) }: libflate_0_1_14_ {
+    dependencies = mapFeatures features ([ adler32_1_0_2 byteorder_1_2_3 crc_1_8_1 ]);
+  };
+  libflate_0_1_14_features = f: updateFeatures f (rec {
+    adler32_1_0_2.default = true;
+    byteorder_1_2_3.default = true;
+    crc_1_8_1.default = true;
+    libflate_0_1_14.default = (f.libflate_0_1_14.default or true);
+  }) [ adler32_1_0_2_features byteorder_1_2_3_features crc_1_8_1_features ];
+  linked_hash_map_0_4_2 = { features?(linked_hash_map_0_4_2_features {}) }: linked_hash_map_0_4_2_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.linked_hash_map_0_4_2 or {});
+  };
+  linked_hash_map_0_4_2_features = f: updateFeatures f (rec {
+    linked_hash_map_0_4_2.default = (f.linked_hash_map_0_4_2.default or true);
+    linked_hash_map_0_4_2.heapsize =
+      (f.linked_hash_map_0_4_2.heapsize or false) ||
+      (f.linked_hash_map_0_4_2.heapsize_impl or false) ||
+      (linked_hash_map_0_4_2.heapsize_impl or false);
+    linked_hash_map_0_4_2.serde =
+      (f.linked_hash_map_0_4_2.serde or false) ||
+      (f.linked_hash_map_0_4_2.serde_impl or false) ||
+      (linked_hash_map_0_4_2.serde_impl or false);
+    linked_hash_map_0_4_2.serde_test =
+      (f.linked_hash_map_0_4_2.serde_test or false) ||
+      (f.linked_hash_map_0_4_2.serde_impl or false) ||
+      (linked_hash_map_0_4_2.serde_impl or false);
+  }) [];
+  log_0_3_9 = { features?(log_0_3_9_features {}) }: log_0_3_9_ {
+    dependencies = mapFeatures features ([ log_0_4_1 ]);
+    features = mkFeatures (features.log_0_3_9 or {});
+  };
+  log_0_3_9_features = f: updateFeatures f (rec {
+    log_0_3_9.default = (f.log_0_3_9.default or true);
+    log_0_3_9.use_std =
+      (f.log_0_3_9.use_std or false) ||
+      (f.log_0_3_9.default or false) ||
+      (log_0_3_9.default or false);
+    log_0_4_1.default = true;
+    log_0_4_1.max_level_debug =
+      (f.log_0_4_1.max_level_debug or false) ||
+      (log_0_3_9.max_level_debug or false) ||
+      (f.log_0_3_9.max_level_debug or false);
+    log_0_4_1.max_level_error =
+      (f.log_0_4_1.max_level_error or false) ||
+      (log_0_3_9.max_level_error or false) ||
+      (f.log_0_3_9.max_level_error or false);
+    log_0_4_1.max_level_info =
+      (f.log_0_4_1.max_level_info or false) ||
+      (log_0_3_9.max_level_info or false) ||
+      (f.log_0_3_9.max_level_info or false);
+    log_0_4_1.max_level_off =
+      (f.log_0_4_1.max_level_off or false) ||
+      (log_0_3_9.max_level_off or false) ||
+      (f.log_0_3_9.max_level_off or false);
+    log_0_4_1.max_level_trace =
+      (f.log_0_4_1.max_level_trace or false) ||
+      (log_0_3_9.max_level_trace or false) ||
+      (f.log_0_3_9.max_level_trace or false);
+    log_0_4_1.max_level_warn =
+      (f.log_0_4_1.max_level_warn or false) ||
+      (log_0_3_9.max_level_warn or false) ||
+      (f.log_0_3_9.max_level_warn or false);
+    log_0_4_1.release_max_level_debug =
+      (f.log_0_4_1.release_max_level_debug or false) ||
+      (log_0_3_9.release_max_level_debug or false) ||
+      (f.log_0_3_9.release_max_level_debug or false);
+    log_0_4_1.release_max_level_error =
+      (f.log_0_4_1.release_max_level_error or false) ||
+      (log_0_3_9.release_max_level_error or false) ||
+      (f.log_0_3_9.release_max_level_error or false);
+    log_0_4_1.release_max_level_info =
+      (f.log_0_4_1.release_max_level_info or false) ||
+      (log_0_3_9.release_max_level_info or false) ||
+      (f.log_0_3_9.release_max_level_info or false);
+    log_0_4_1.release_max_level_off =
+      (f.log_0_4_1.release_max_level_off or false) ||
+      (log_0_3_9.release_max_level_off or false) ||
+      (f.log_0_3_9.release_max_level_off or false);
+    log_0_4_1.release_max_level_trace =
+      (f.log_0_4_1.release_max_level_trace or false) ||
+      (log_0_3_9.release_max_level_trace or false) ||
+      (f.log_0_3_9.release_max_level_trace or false);
+    log_0_4_1.release_max_level_warn =
+      (f.log_0_4_1.release_max_level_warn or false) ||
+      (log_0_3_9.release_max_level_warn or false) ||
+      (f.log_0_3_9.release_max_level_warn or false);
+    log_0_4_1.std =
+      (f.log_0_4_1.std or false) ||
+      (log_0_3_9.use_std or false) ||
+      (f.log_0_3_9.use_std or false);
+  }) [ log_0_4_1_features ];
+  log_0_4_1 = { features?(log_0_4_1_features {}) }: log_0_4_1_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 ]);
+    features = mkFeatures (features.log_0_4_1 or {});
+  };
+  log_0_4_1_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = true;
+    log_0_4_1.default = (f.log_0_4_1.default or true);
+  }) [ cfg_if_0_1_3_features ];
+  lru_cache_0_1_1 = { features?(lru_cache_0_1_1_features {}) }: lru_cache_0_1_1_ {
+    dependencies = mapFeatures features ([ linked_hash_map_0_4_2 ]);
+    features = mkFeatures (features.lru_cache_0_1_1 or {});
+  };
+  lru_cache_0_1_1_features = f: updateFeatures f (rec {
+    linked_hash_map_0_4_2.default = true;
+    linked_hash_map_0_4_2.heapsize_impl =
+      (f.linked_hash_map_0_4_2.heapsize_impl or false) ||
+      (lru_cache_0_1_1.heapsize_impl or false) ||
+      (f.lru_cache_0_1_1.heapsize_impl or false);
+    lru_cache_0_1_1.default = (f.lru_cache_0_1_1.default or true);
+    lru_cache_0_1_1.heapsize =
+      (f.lru_cache_0_1_1.heapsize or false) ||
+      (f.lru_cache_0_1_1.heapsize_impl or false) ||
+      (lru_cache_0_1_1.heapsize_impl or false);
+  }) [ linked_hash_map_0_4_2_features ];
+  matches_0_1_6 = { features?(matches_0_1_6_features {}) }: matches_0_1_6_ {};
+  matches_0_1_6_features = f: updateFeatures f (rec {
+    matches_0_1_6.default = (f.matches_0_1_6.default or true);
+  }) [];
+  md5_0_3_7 = { features?(md5_0_3_7_features {}) }: md5_0_3_7_ {};
+  md5_0_3_7_features = f: updateFeatures f (rec {
+    md5_0_3_7.default = (f.md5_0_3_7.default or true);
+  }) [];
+  memchr_1_0_2 = { features?(memchr_1_0_2_features {}) }: memchr_1_0_2_ {
+    dependencies = mapFeatures features ([ ]
+      ++ (if features.memchr_1_0_2.libc or false then [ libc_0_2_41 ] else []));
+    features = mkFeatures (features.memchr_1_0_2 or {});
+  };
+  memchr_1_0_2_features = f: updateFeatures f (rec {
+    libc_0_2_41.default = (f.libc_0_2_41.default or false);
+    libc_0_2_41.use_std =
+      (f.libc_0_2_41.use_std or false) ||
+      (memchr_1_0_2.use_std or false) ||
+      (f.memchr_1_0_2.use_std or false);
+    memchr_1_0_2.default = (f.memchr_1_0_2.default or true);
+    memchr_1_0_2.libc =
+      (f.memchr_1_0_2.libc or false) ||
+      (f.memchr_1_0_2.default or false) ||
+      (memchr_1_0_2.default or false) ||
+      (f.memchr_1_0_2.use_std or false) ||
+      (memchr_1_0_2.use_std or false);
+    memchr_1_0_2.use_std =
+      (f.memchr_1_0_2.use_std or false) ||
+      (f.memchr_1_0_2.default or false) ||
+      (memchr_1_0_2.default or false);
+  }) [ libc_0_2_41_features ];
+  memchr_2_0_1 = { features?(memchr_2_0_1_features {}) }: memchr_2_0_1_ {
+    dependencies = mapFeatures features ([ ]
+      ++ (if features.memchr_2_0_1.libc or false then [ libc_0_2_41 ] else []));
+    features = mkFeatures (features.memchr_2_0_1 or {});
+  };
+  memchr_2_0_1_features = f: updateFeatures f (rec {
+    libc_0_2_41.default = (f.libc_0_2_41.default or false);
+    libc_0_2_41.use_std =
+      (f.libc_0_2_41.use_std or false) ||
+      (memchr_2_0_1.use_std or false) ||
+      (f.memchr_2_0_1.use_std or false);
+    memchr_2_0_1.default = (f.memchr_2_0_1.default or true);
+    memchr_2_0_1.libc =
+      (f.memchr_2_0_1.libc or false) ||
+      (f.memchr_2_0_1.default or false) ||
+      (memchr_2_0_1.default or false) ||
+      (f.memchr_2_0_1.use_std or false) ||
+      (memchr_2_0_1.use_std or false);
+    memchr_2_0_1.use_std =
+      (f.memchr_2_0_1.use_std or false) ||
+      (f.memchr_2_0_1.default or false) ||
+      (memchr_2_0_1.default or false);
+  }) [ libc_0_2_41_features ];
+  memoffset_0_1_0 = { features?(memoffset_0_1_0_features {}) }: memoffset_0_1_0_ {
+    features = mkFeatures (features.memoffset_0_1_0 or {});
+  };
+  memoffset_0_1_0_features = f: updateFeatures f (rec {
+    memoffset_0_1_0.default = (f.memoffset_0_1_0.default or true);
+    memoffset_0_1_0.std =
+      (f.memoffset_0_1_0.std or false) ||
+      (f.memoffset_0_1_0.default or false) ||
+      (memoffset_0_1_0.default or false);
+  }) [];
+  memoffset_0_2_1 = { features?(memoffset_0_2_1_features {}) }: memoffset_0_2_1_ {};
+  memoffset_0_2_1_features = f: updateFeatures f (rec {
+    memoffset_0_2_1.default = (f.memoffset_0_2_1.default or true);
+  }) [];
+  mime_0_3_7 = { features?(mime_0_3_7_features {}) }: mime_0_3_7_ {
+    dependencies = mapFeatures features ([ unicase_2_1_0 ]);
+  };
+  mime_0_3_7_features = f: updateFeatures f (rec {
+    mime_0_3_7.default = (f.mime_0_3_7.default or true);
+    unicase_2_1_0.default = true;
+  }) [ unicase_2_1_0_features ];
+  mime_guess_2_0_0_alpha_4 = { features?(mime_guess_2_0_0_alpha_4_features {}) }: mime_guess_2_0_0_alpha_4_ {
+    dependencies = mapFeatures features ([ mime_0_3_7 phf_0_7_22 unicase_1_4_2 ]);
+    buildDependencies = mapFeatures features ([ phf_codegen_0_7_22 unicase_1_4_2 ]);
+    features = mkFeatures (features.mime_guess_2_0_0_alpha_4 or {});
+  };
+  mime_guess_2_0_0_alpha_4_features = f: updateFeatures f (rec {
+    mime_0_3_7.default = true;
+    mime_guess_2_0_0_alpha_4.default = (f.mime_guess_2_0_0_alpha_4.default or true);
+    phf_0_7_22.default = true;
+    phf_0_7_22.unicase = true;
+    phf_codegen_0_7_22.default = true;
+    unicase_1_4_2.default = true;
+  }) [ mime_0_3_7_features phf_0_7_22_features unicase_1_4_2_features phf_codegen_0_7_22_features unicase_1_4_2_features ];
+  miniz_sys_0_1_10 = { features?(miniz_sys_0_1_10_features {}) }: miniz_sys_0_1_10_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ]);
+    buildDependencies = mapFeatures features ([ cc_1_0_15 ]);
+  };
+  miniz_sys_0_1_10_features = f: updateFeatures f (rec {
+    cc_1_0_15.default = true;
+    libc_0_2_41.default = true;
+    miniz_sys_0_1_10.default = (f.miniz_sys_0_1_10.default or true);
+  }) [ libc_0_2_41_features cc_1_0_15_features ];
+  mio_0_6_14 = { features?(mio_0_6_14_features {}) }: mio_0_6_14_ {
+    dependencies = mapFeatures features ([ iovec_0_1_2 lazycell_0_6_0 log_0_4_1 net2_0_2_32 slab_0_4_0 ])
+      ++ (if kernel == "fuchsia" then mapFeatures features ([ fuchsia_zircon_0_3_3 fuchsia_zircon_sys_0_3_3 ]) else [])
+      ++ (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ kernel32_sys_0_2_2 miow_0_2_1 winapi_0_2_8 ]) else []);
+    features = mkFeatures (features.mio_0_6_14 or {});
+  };
+  mio_0_6_14_features = f: updateFeatures f (rec {
+    fuchsia_zircon_0_3_3.default = true;
+    fuchsia_zircon_sys_0_3_3.default = true;
+    iovec_0_1_2.default = true;
+    kernel32_sys_0_2_2.default = true;
+    lazycell_0_6_0.default = true;
+    libc_0_2_41.default = true;
+    log_0_4_1.default = true;
+    mio_0_6_14."with-deprecated" =
+      (f.mio_0_6_14."with-deprecated" or false) ||
+      (f.mio_0_6_14.default or false) ||
+      (mio_0_6_14.default or false);
+    mio_0_6_14.default = (f.mio_0_6_14.default or true);
+    miow_0_2_1.default = true;
+    net2_0_2_32.default = true;
+    slab_0_4_0.default = true;
+    winapi_0_2_8.default = true;
+  }) [ iovec_0_1_2_features lazycell_0_6_0_features log_0_4_1_features net2_0_2_32_features slab_0_4_0_features fuchsia_zircon_0_3_3_features fuchsia_zircon_sys_0_3_3_features libc_0_2_41_features kernel32_sys_0_2_2_features miow_0_2_1_features winapi_0_2_8_features ];
+  mio_uds_0_6_6 = { features?(mio_uds_0_6_6_features {}) }: mio_uds_0_6_6_ {
+    dependencies = (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ iovec_0_1_2 libc_0_2_41 mio_0_6_14 ]) else []);
+  };
+  mio_uds_0_6_6_features = f: updateFeatures f (rec {
+    iovec_0_1_2.default = true;
+    libc_0_2_41.default = true;
+    mio_0_6_14.default = true;
+    mio_uds_0_6_6.default = (f.mio_uds_0_6_6.default or true);
+  }) [ iovec_0_1_2_features libc_0_2_41_features mio_0_6_14_features ];
+  miow_0_2_1 = { features?(miow_0_2_1_features {}) }: miow_0_2_1_ {
+    dependencies = mapFeatures features ([ kernel32_sys_0_2_2 net2_0_2_32 winapi_0_2_8 ws2_32_sys_0_2_1 ]);
+  };
+  miow_0_2_1_features = f: updateFeatures f (rec {
+    kernel32_sys_0_2_2.default = true;
+    miow_0_2_1.default = (f.miow_0_2_1.default or true);
+    net2_0_2_32.default = (f.net2_0_2_32.default or false);
+    winapi_0_2_8.default = true;
+    ws2_32_sys_0_2_1.default = true;
+  }) [ kernel32_sys_0_2_2_features net2_0_2_32_features winapi_0_2_8_features ws2_32_sys_0_2_1_features ];
+  native_tls_0_1_5 = { features?(native_tls_0_1_5_features {}) }: native_tls_0_1_5_ {
+    dependencies = mapFeatures features ([ lazy_static_0_2_11 ])
+      ++ (if kernel == "darwin" || kernel == "ios" then mapFeatures features ([ libc_0_2_41 security_framework_0_1_16 security_framework_sys_0_1_16 tempdir_0_3_7 ]) else [])
+      ++ (if !(kernel == "windows" || kernel == "darwin" || kernel == "ios") then mapFeatures features ([ openssl_0_9_24 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ schannel_0_1_12 ]) else []);
+  };
+  native_tls_0_1_5_features = f: updateFeatures f (rec {
+    lazy_static_0_2_11.default = true;
+    libc_0_2_41.default = true;
+    native_tls_0_1_5.default = (f.native_tls_0_1_5.default or true);
+    openssl_0_9_24.default = true;
+    schannel_0_1_12.default = true;
+    security_framework_0_1_16."OSX_10_8" = true;
+    security_framework_0_1_16.default = true;
+    security_framework_sys_0_1_16.default = true;
+    tempdir_0_3_7.default = true;
+  }) [ lazy_static_0_2_11_features libc_0_2_41_features security_framework_0_1_16_features security_framework_sys_0_1_16_features tempdir_0_3_7_features openssl_0_9_24_features schannel_0_1_12_features ];
+  net2_0_2_32 = { features?(net2_0_2_32_features {}) }: net2_0_2_32_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 ])
+      ++ (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else [])
+      ++ (if kernel == "i686-apple-darwin" then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "i686-unknown-linux-gnu" then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "x86_64-apple-darwin" then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "x86_64-unknown-linux-gnu" then mapFeatures features ([ libc_0_2_41 ]) else []);
+    features = mkFeatures (features.net2_0_2_32 or {});
+  };
+  net2_0_2_32_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = true;
+    libc_0_2_41.default = true;
+    net2_0_2_32.default = (f.net2_0_2_32.default or true);
+    net2_0_2_32.duration =
+      (f.net2_0_2_32.duration or false) ||
+      (f.net2_0_2_32.default or false) ||
+      (net2_0_2_32.default or false);
+    winapi_0_3_4."winsock2" = true;
+    winapi_0_3_4."ws2def" = true;
+    winapi_0_3_4."ws2ipdef" = true;
+    winapi_0_3_4."ws2tcpip" = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.handleapi = true;
+  }) [ cfg_if_0_1_3_features libc_0_2_41_features winapi_0_3_4_features libc_0_2_41_features libc_0_2_41_features libc_0_2_41_features libc_0_2_41_features ];
+  nodrop_0_1_12 = { features?(nodrop_0_1_12_features {}) }: nodrop_0_1_12_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.nodrop_0_1_12 or {});
+  };
+  nodrop_0_1_12_features = f: updateFeatures f (rec {
+    nodrop_0_1_12."nodrop-union" =
+      (f.nodrop_0_1_12."nodrop-union" or false) ||
+      (f.nodrop_0_1_12.use_union or false) ||
+      (nodrop_0_1_12.use_union or false);
+    nodrop_0_1_12.default = (f.nodrop_0_1_12.default or true);
+    nodrop_0_1_12.std =
+      (f.nodrop_0_1_12.std or false) ||
+      (f.nodrop_0_1_12.default or false) ||
+      (nodrop_0_1_12.default or false);
+  }) [];
+  nom_3_2_1 = { features?(nom_3_2_1_features {}) }: nom_3_2_1_ {
+    dependencies = mapFeatures features ([ memchr_1_0_2 ]);
+    features = mkFeatures (features.nom_3_2_1 or {});
+  };
+  nom_3_2_1_features = f: updateFeatures f (rec {
+    memchr_1_0_2.default = (f.memchr_1_0_2.default or false);
+    memchr_1_0_2.use_std =
+      (f.memchr_1_0_2.use_std or false) ||
+      (nom_3_2_1.std or false) ||
+      (f.nom_3_2_1.std or false);
+    nom_3_2_1.compiler_error =
+      (f.nom_3_2_1.compiler_error or false) ||
+      (f.nom_3_2_1.nightly or false) ||
+      (nom_3_2_1.nightly or false);
+    nom_3_2_1.default = (f.nom_3_2_1.default or true);
+    nom_3_2_1.lazy_static =
+      (f.nom_3_2_1.lazy_static or false) ||
+      (f.nom_3_2_1.regexp_macros or false) ||
+      (nom_3_2_1.regexp_macros or false);
+    nom_3_2_1.regex =
+      (f.nom_3_2_1.regex or false) ||
+      (f.nom_3_2_1.regexp or false) ||
+      (nom_3_2_1.regexp or false);
+    nom_3_2_1.regexp =
+      (f.nom_3_2_1.regexp or false) ||
+      (f.nom_3_2_1.regexp_macros or false) ||
+      (nom_3_2_1.regexp_macros or false);
+    nom_3_2_1.std =
+      (f.nom_3_2_1.std or false) ||
+      (f.nom_3_2_1.default or false) ||
+      (nom_3_2_1.default or false);
+    nom_3_2_1.stream =
+      (f.nom_3_2_1.stream or false) ||
+      (f.nom_3_2_1.default or false) ||
+      (nom_3_2_1.default or false);
+  }) [ memchr_1_0_2_features ];
+  num_integer_0_1_38 = { features?(num_integer_0_1_38_features {}) }: num_integer_0_1_38_ {
+    dependencies = mapFeatures features ([ num_traits_0_2_4 ]);
+    features = mkFeatures (features.num_integer_0_1_38 or {});
+  };
+  num_integer_0_1_38_features = f: updateFeatures f (rec {
+    num_integer_0_1_38.default = (f.num_integer_0_1_38.default or true);
+    num_integer_0_1_38.std =
+      (f.num_integer_0_1_38.std or false) ||
+      (f.num_integer_0_1_38.default or false) ||
+      (num_integer_0_1_38.default or false);
+    num_traits_0_2_4."i128" =
+      (f.num_traits_0_2_4."i128" or false) ||
+      (num_integer_0_1_38."i128" or false) ||
+      (f.num_integer_0_1_38."i128" or false);
+    num_traits_0_2_4.default = (f.num_traits_0_2_4.default or false);
+    num_traits_0_2_4.std =
+      (f.num_traits_0_2_4.std or false) ||
+      (num_integer_0_1_38.std or false) ||
+      (f.num_integer_0_1_38.std or false);
+  }) [ num_traits_0_2_4_features ];
+  num_traits_0_2_4 = { features?(num_traits_0_2_4_features {}) }: num_traits_0_2_4_ {
+    features = mkFeatures (features.num_traits_0_2_4 or {});
+  };
+  num_traits_0_2_4_features = f: updateFeatures f (rec {
+    num_traits_0_2_4.default = (f.num_traits_0_2_4.default or true);
+    num_traits_0_2_4.std =
+      (f.num_traits_0_2_4.std or false) ||
+      (f.num_traits_0_2_4.default or false) ||
+      (num_traits_0_2_4.default or false);
+  }) [];
+  num_cpus_1_8_0 = { features?(num_cpus_1_8_0_features {}) }: num_cpus_1_8_0_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ]);
+  };
+  num_cpus_1_8_0_features = f: updateFeatures f (rec {
+    libc_0_2_41.default = true;
+    num_cpus_1_8_0.default = (f.num_cpus_1_8_0.default or true);
+  }) [ libc_0_2_41_features ];
+  openssl_0_9_24 = { features?(openssl_0_9_24_features {}) }: openssl_0_9_24_ {
+    dependencies = mapFeatures features ([ bitflags_0_9_1 foreign_types_0_3_2 lazy_static_1_0_0 libc_0_2_41 openssl_sys_0_9_31 ]);
+    features = mkFeatures (features.openssl_0_9_24 or {});
+  };
+  openssl_0_9_24_features = f: updateFeatures f (rec {
+    bitflags_0_9_1.default = true;
+    foreign_types_0_3_2.default = true;
+    lazy_static_1_0_0.default = true;
+    libc_0_2_41.default = true;
+    openssl_0_9_24.default = (f.openssl_0_9_24.default or true);
+    openssl_sys_0_9_31.default = true;
+  }) [ bitflags_0_9_1_features foreign_types_0_3_2_features lazy_static_1_0_0_features libc_0_2_41_features openssl_sys_0_9_31_features ];
+  openssl_sys_0_9_31 = { features?(openssl_sys_0_9_31_features {}) }: openssl_sys_0_9_31_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ])
+      ++ (if abi == "msvc" then mapFeatures features ([]) else []);
+    buildDependencies = mapFeatures features ([ cc_1_0_15 pkg_config_0_3_11 ]);
+  };
+  openssl_sys_0_9_31_features = f: updateFeatures f (rec {
+    cc_1_0_15.default = true;
+    libc_0_2_41.default = true;
+    openssl_sys_0_9_31.default = (f.openssl_sys_0_9_31.default or true);
+    pkg_config_0_3_11.default = true;
+  }) [ libc_0_2_41_features cc_1_0_15_features pkg_config_0_3_11_features ];
+  owning_ref_0_3_3 = { features?(owning_ref_0_3_3_features {}) }: owning_ref_0_3_3_ {
+    dependencies = mapFeatures features ([ stable_deref_trait_1_0_0 ]);
+  };
+  owning_ref_0_3_3_features = f: updateFeatures f (rec {
+    owning_ref_0_3_3.default = (f.owning_ref_0_3_3.default or true);
+    stable_deref_trait_1_0_0.default = true;
+  }) [ stable_deref_trait_1_0_0_features ];
+  parking_lot_0_4_8 = { features?(parking_lot_0_4_8_features {}) }: parking_lot_0_4_8_ {
+    dependencies = mapFeatures features ([ parking_lot_core_0_2_14 ]
+      ++ (if features.parking_lot_0_4_8.owning_ref or false then [ owning_ref_0_3_3 ] else []));
+    features = mkFeatures (features.parking_lot_0_4_8 or {});
+  };
+  parking_lot_0_4_8_features = f: updateFeatures f (rec {
+    owning_ref_0_3_3.default = true;
+    parking_lot_0_4_8.default = (f.parking_lot_0_4_8.default or true);
+    parking_lot_0_4_8.owning_ref =
+      (f.parking_lot_0_4_8.owning_ref or false) ||
+      (f.parking_lot_0_4_8.default or false) ||
+      (parking_lot_0_4_8.default or false);
+    parking_lot_core_0_2_14.deadlock_detection =
+      (f.parking_lot_core_0_2_14.deadlock_detection or false) ||
+      (parking_lot_0_4_8.deadlock_detection or false) ||
+      (f.parking_lot_0_4_8.deadlock_detection or false);
+    parking_lot_core_0_2_14.default = true;
+    parking_lot_core_0_2_14.nightly =
+      (f.parking_lot_core_0_2_14.nightly or false) ||
+      (parking_lot_0_4_8.nightly or false) ||
+      (f.parking_lot_0_4_8.nightly or false);
+  }) [ owning_ref_0_3_3_features parking_lot_core_0_2_14_features ];
+  parking_lot_core_0_2_14 = { features?(parking_lot_core_0_2_14_features {}) }: parking_lot_core_0_2_14_ {
+    dependencies = mapFeatures features ([ rand_0_4_2 smallvec_0_6_1 ])
+      ++ (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+    features = mkFeatures (features.parking_lot_core_0_2_14 or {});
+  };
+  parking_lot_core_0_2_14_features = f: updateFeatures f (rec {
+    libc_0_2_41.default = true;
+    parking_lot_core_0_2_14."thread-id" =
+      (f.parking_lot_core_0_2_14."thread-id" or false) ||
+      (f.parking_lot_core_0_2_14.deadlock_detection or false) ||
+      (parking_lot_core_0_2_14.deadlock_detection or false);
+    parking_lot_core_0_2_14.backtrace =
+      (f.parking_lot_core_0_2_14.backtrace or false) ||
+      (f.parking_lot_core_0_2_14.deadlock_detection or false) ||
+      (parking_lot_core_0_2_14.deadlock_detection or false);
+    parking_lot_core_0_2_14.default = (f.parking_lot_core_0_2_14.default or true);
+    parking_lot_core_0_2_14.petgraph =
+      (f.parking_lot_core_0_2_14.petgraph or false) ||
+      (f.parking_lot_core_0_2_14.deadlock_detection or false) ||
+      (parking_lot_core_0_2_14.deadlock_detection or false);
+    rand_0_4_2.default = true;
+    smallvec_0_6_1.default = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.errhandlingapi = true;
+    winapi_0_3_4.handleapi = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.ntstatus = true;
+    winapi_0_3_4.winbase = true;
+    winapi_0_3_4.winerror = true;
+    winapi_0_3_4.winnt = true;
+  }) [ rand_0_4_2_features smallvec_0_6_1_features libc_0_2_41_features winapi_0_3_4_features ];
+  percent_encoding_1_0_1 = { features?(percent_encoding_1_0_1_features {}) }: percent_encoding_1_0_1_ {};
+  percent_encoding_1_0_1_features = f: updateFeatures f (rec {
+    percent_encoding_1_0_1.default = (f.percent_encoding_1_0_1.default or true);
+  }) [];
+  pest_1_0_6 = { features?(pest_1_0_6_features {}) }: pest_1_0_6_ {};
+  pest_1_0_6_features = f: updateFeatures f (rec {
+    pest_1_0_6.default = (f.pest_1_0_6.default or true);
+  }) [];
+  pest_derive_1_0_7 = { features?(pest_derive_1_0_7_features {}) }: pest_derive_1_0_7_ {
+    dependencies = mapFeatures features ([ pest_1_0_6 quote_0_3_15 syn_0_11_11 ]);
+  };
+  pest_derive_1_0_7_features = f: updateFeatures f (rec {
+    pest_1_0_6.default = true;
+    pest_derive_1_0_7.default = (f.pest_derive_1_0_7.default or true);
+    quote_0_3_15.default = true;
+    syn_0_11_11.default = true;
+  }) [ pest_1_0_6_features quote_0_3_15_features syn_0_11_11_features ];
+  phf_0_7_22 = { features?(phf_0_7_22_features {}) }: phf_0_7_22_ {
+    dependencies = mapFeatures features ([ phf_shared_0_7_22 ]);
+    features = mkFeatures (features.phf_0_7_22 or {});
+  };
+  phf_0_7_22_features = f: updateFeatures f (rec {
+    phf_0_7_22.default = (f.phf_0_7_22.default or true);
+    phf_shared_0_7_22.core =
+      (f.phf_shared_0_7_22.core or false) ||
+      (phf_0_7_22.core or false) ||
+      (f.phf_0_7_22.core or false);
+    phf_shared_0_7_22.default = true;
+    phf_shared_0_7_22.unicase =
+      (f.phf_shared_0_7_22.unicase or false) ||
+      (phf_0_7_22.unicase or false) ||
+      (f.phf_0_7_22.unicase or false);
+  }) [ phf_shared_0_7_22_features ];
+  phf_codegen_0_7_22 = { features?(phf_codegen_0_7_22_features {}) }: phf_codegen_0_7_22_ {
+    dependencies = mapFeatures features ([ phf_generator_0_7_22 phf_shared_0_7_22 ]);
+  };
+  phf_codegen_0_7_22_features = f: updateFeatures f (rec {
+    phf_codegen_0_7_22.default = (f.phf_codegen_0_7_22.default or true);
+    phf_generator_0_7_22.default = true;
+    phf_shared_0_7_22.default = true;
+  }) [ phf_generator_0_7_22_features phf_shared_0_7_22_features ];
+  phf_generator_0_7_22 = { features?(phf_generator_0_7_22_features {}) }: phf_generator_0_7_22_ {
+    dependencies = mapFeatures features ([ phf_shared_0_7_22 rand_0_4_2 ]);
+  };
+  phf_generator_0_7_22_features = f: updateFeatures f (rec {
+    phf_generator_0_7_22.default = (f.phf_generator_0_7_22.default or true);
+    phf_shared_0_7_22.default = true;
+    rand_0_4_2.default = true;
+  }) [ phf_shared_0_7_22_features rand_0_4_2_features ];
+  phf_shared_0_7_22 = { features?(phf_shared_0_7_22_features {}) }: phf_shared_0_7_22_ {
+    dependencies = mapFeatures features ([ siphasher_0_2_2 ]
+      ++ (if features.phf_shared_0_7_22.unicase or false then [ unicase_1_4_2 ] else []));
+    features = mkFeatures (features.phf_shared_0_7_22 or {});
+  };
+  phf_shared_0_7_22_features = f: updateFeatures f (rec {
+    phf_shared_0_7_22.default = (f.phf_shared_0_7_22.default or true);
+    siphasher_0_2_2.default = true;
+    unicase_1_4_2.default = true;
+  }) [ siphasher_0_2_2_features unicase_1_4_2_features ];
+  pkg_config_0_3_11 = { features?(pkg_config_0_3_11_features {}) }: pkg_config_0_3_11_ {};
+  pkg_config_0_3_11_features = f: updateFeatures f (rec {
+    pkg_config_0_3_11.default = (f.pkg_config_0_3_11.default or true);
+  }) [];
+  pq_sys_0_4_4 = { features?(pq_sys_0_4_4_features {}) }: pq_sys_0_4_4_ {
+    dependencies = (if abi == "msvc" then mapFeatures features ([]) else []);
+    buildDependencies = mapFeatures features ([]);
+  };
+  pq_sys_0_4_4_features = f: updateFeatures f (rec {
+    pq_sys_0_4_4.default = (f.pq_sys_0_4_4.default or true);
+  }) [];
+  proc_macro2_0_2_3 = { features?(proc_macro2_0_2_3_features {}) }: proc_macro2_0_2_3_ {
+    dependencies = mapFeatures features ([ unicode_xid_0_1_0 ]);
+    features = mkFeatures (features.proc_macro2_0_2_3 or {});
+  };
+  proc_macro2_0_2_3_features = f: updateFeatures f (rec {
+    proc_macro2_0_2_3."proc-macro" =
+      (f.proc_macro2_0_2_3."proc-macro" or false) ||
+      (f.proc_macro2_0_2_3.default or false) ||
+      (proc_macro2_0_2_3.default or false) ||
+      (f.proc_macro2_0_2_3.nightly or false) ||
+      (proc_macro2_0_2_3.nightly or false);
+    proc_macro2_0_2_3.default = (f.proc_macro2_0_2_3.default or true);
+    unicode_xid_0_1_0.default = true;
+  }) [ unicode_xid_0_1_0_features ];
+  proc_macro2_0_3_8 = { features?(proc_macro2_0_3_8_features {}) }: proc_macro2_0_3_8_ {
+    dependencies = mapFeatures features ([ unicode_xid_0_1_0 ]);
+    features = mkFeatures (features.proc_macro2_0_3_8 or {});
+  };
+  proc_macro2_0_3_8_features = f: updateFeatures f (rec {
+    proc_macro2_0_3_8."proc-macro" =
+      (f.proc_macro2_0_3_8."proc-macro" or false) ||
+      (f.proc_macro2_0_3_8.default or false) ||
+      (proc_macro2_0_3_8.default or false) ||
+      (f.proc_macro2_0_3_8.nightly or false) ||
+      (proc_macro2_0_3_8.nightly or false);
+    proc_macro2_0_3_8.default = (f.proc_macro2_0_3_8.default or true);
+    unicode_xid_0_1_0.default = true;
+  }) [ unicode_xid_0_1_0_features ];
+  proc_macro2_0_4_3 = { features?(proc_macro2_0_4_3_features {}) }: proc_macro2_0_4_3_ {
+    dependencies = mapFeatures features ([ unicode_xid_0_1_0 ]);
+    features = mkFeatures (features.proc_macro2_0_4_3 or {});
+  };
+  proc_macro2_0_4_3_features = f: updateFeatures f (rec {
+    proc_macro2_0_4_3."proc-macro" =
+      (f.proc_macro2_0_4_3."proc-macro" or false) ||
+      (f.proc_macro2_0_4_3.default or false) ||
+      (proc_macro2_0_4_3.default or false) ||
+      (f.proc_macro2_0_4_3.nightly or false) ||
+      (proc_macro2_0_4_3.nightly or false);
+    proc_macro2_0_4_3.default = (f.proc_macro2_0_4_3.default or true);
+    unicode_xid_0_1_0.default = true;
+  }) [ unicode_xid_0_1_0_features ];
+  pulldown_cmark_0_1_2 = { features?(pulldown_cmark_0_1_2_features {}) }: pulldown_cmark_0_1_2_ {
+    dependencies = mapFeatures features ([ bitflags_0_9_1 ]
+      ++ (if features.pulldown_cmark_0_1_2.getopts or false then [ getopts_0_2_17 ] else []));
+    features = mkFeatures (features.pulldown_cmark_0_1_2 or {});
+  };
+  pulldown_cmark_0_1_2_features = f: updateFeatures f (rec {
+    bitflags_0_9_1.default = true;
+    getopts_0_2_17.default = true;
+    pulldown_cmark_0_1_2.default = (f.pulldown_cmark_0_1_2.default or true);
+    pulldown_cmark_0_1_2.getopts =
+      (f.pulldown_cmark_0_1_2.getopts or false) ||
+      (f.pulldown_cmark_0_1_2.default or false) ||
+      (pulldown_cmark_0_1_2.default or false);
+  }) [ bitflags_0_9_1_features getopts_0_2_17_features ];
+  quick_error_1_2_1 = { features?(quick_error_1_2_1_features {}) }: quick_error_1_2_1_ {};
+  quick_error_1_2_1_features = f: updateFeatures f (rec {
+    quick_error_1_2_1.default = (f.quick_error_1_2_1.default or true);
+  }) [];
+  quote_0_3_15 = { features?(quote_0_3_15_features {}) }: quote_0_3_15_ {};
+  quote_0_3_15_features = f: updateFeatures f (rec {
+    quote_0_3_15.default = (f.quote_0_3_15.default or true);
+  }) [];
+  quote_0_4_2 = { features?(quote_0_4_2_features {}) }: quote_0_4_2_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_2_3 ]);
+  };
+  quote_0_4_2_features = f: updateFeatures f (rec {
+    proc_macro2_0_2_3.default = true;
+    quote_0_4_2.default = (f.quote_0_4_2.default or true);
+  }) [ proc_macro2_0_2_3_features ];
+  quote_0_5_2 = { features?(quote_0_5_2_features {}) }: quote_0_5_2_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_3_8 ]);
+    features = mkFeatures (features.quote_0_5_2 or {});
+  };
+  quote_0_5_2_features = f: updateFeatures f (rec {
+    proc_macro2_0_3_8."proc-macro" =
+      (f.proc_macro2_0_3_8."proc-macro" or false) ||
+      (quote_0_5_2."proc-macro" or false) ||
+      (f.quote_0_5_2."proc-macro" or false);
+    proc_macro2_0_3_8.default = (f.proc_macro2_0_3_8.default or false);
+    quote_0_5_2."proc-macro" =
+      (f.quote_0_5_2."proc-macro" or false) ||
+      (f.quote_0_5_2.default or false) ||
+      (quote_0_5_2.default or false);
+    quote_0_5_2.default = (f.quote_0_5_2.default or true);
+  }) [ proc_macro2_0_3_8_features ];
+  quote_0_6_2 = { features?(quote_0_6_2_features {}) }: quote_0_6_2_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_4_3 ]);
+    features = mkFeatures (features.quote_0_6_2 or {});
+  };
+  quote_0_6_2_features = f: updateFeatures f (rec {
+    proc_macro2_0_4_3."proc-macro" =
+      (f.proc_macro2_0_4_3."proc-macro" or false) ||
+      (quote_0_6_2."proc-macro" or false) ||
+      (f.quote_0_6_2."proc-macro" or false);
+    proc_macro2_0_4_3.default = (f.proc_macro2_0_4_3.default or false);
+    quote_0_6_2."proc-macro" =
+      (f.quote_0_6_2."proc-macro" or false) ||
+      (f.quote_0_6_2.default or false) ||
+      (quote_0_6_2.default or false);
+    quote_0_6_2.default = (f.quote_0_6_2.default or true);
+  }) [ proc_macro2_0_4_3_features ];
+  r2d2_0_8_2 = { features?(r2d2_0_8_2_features {}) }: r2d2_0_8_2_ {
+    dependencies = mapFeatures features ([ antidote_1_0_0 log_0_4_1 scheduled_thread_pool_0_2_0 ]);
+  };
+  r2d2_0_8_2_features = f: updateFeatures f (rec {
+    antidote_1_0_0.default = true;
+    log_0_4_1.default = true;
+    r2d2_0_8_2.default = (f.r2d2_0_8_2.default or true);
+    scheduled_thread_pool_0_2_0.default = true;
+  }) [ antidote_1_0_0_features log_0_4_1_features scheduled_thread_pool_0_2_0_features ];
+  rand_0_3_22 = { features?(rand_0_3_22_features {}) }: rand_0_3_22_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 rand_0_4_2 ])
+      ++ (if kernel == "fuchsia" then mapFeatures features ([ fuchsia_zircon_0_3_3 ]) else []);
+    features = mkFeatures (features.rand_0_3_22 or {});
+  };
+  rand_0_3_22_features = f: updateFeatures f (rec {
+    fuchsia_zircon_0_3_3.default = true;
+    libc_0_2_41.default = true;
+    rand_0_3_22."i128_support" =
+      (f.rand_0_3_22."i128_support" or false) ||
+      (f.rand_0_3_22.nightly or false) ||
+      (rand_0_3_22.nightly or false);
+    rand_0_3_22.default = (f.rand_0_3_22.default or true);
+    rand_0_4_2.default = true;
+  }) [ libc_0_2_41_features rand_0_4_2_features fuchsia_zircon_0_3_3_features ];
+  rand_0_4_2 = { features?(rand_0_4_2_features {}) }: rand_0_4_2_ {
+    dependencies = (if kernel == "fuchsia" then mapFeatures features ([ fuchsia_zircon_0_3_3 ]) else [])
+      ++ (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ ]
+      ++ (if features.rand_0_4_2.libc or false then [ libc_0_2_41 ] else [])) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+    features = mkFeatures (features.rand_0_4_2 or {});
+  };
+  rand_0_4_2_features = f: updateFeatures f (rec {
+    fuchsia_zircon_0_3_3.default = true;
+    libc_0_2_41.default = true;
+    rand_0_4_2."i128_support" =
+      (f.rand_0_4_2."i128_support" or false) ||
+      (f.rand_0_4_2.nightly or false) ||
+      (rand_0_4_2.nightly or false);
+    rand_0_4_2.default = (f.rand_0_4_2.default or true);
+    rand_0_4_2.libc =
+      (f.rand_0_4_2.libc or false) ||
+      (f.rand_0_4_2.std or false) ||
+      (rand_0_4_2.std or false);
+    rand_0_4_2.std =
+      (f.rand_0_4_2.std or false) ||
+      (f.rand_0_4_2.default or false) ||
+      (rand_0_4_2.default or false);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.ntsecapi = true;
+    winapi_0_3_4.profileapi = true;
+    winapi_0_3_4.winnt = true;
+  }) [ fuchsia_zircon_0_3_3_features libc_0_2_41_features winapi_0_3_4_features ];
+  rayon_0_8_2 = { features?(rayon_0_8_2_features {}) }: rayon_0_8_2_ {
+    dependencies = mapFeatures features ([ rayon_core_1_4_0 ]);
+  };
+  rayon_0_8_2_features = f: updateFeatures f (rec {
+    rayon_0_8_2.default = (f.rayon_0_8_2.default or true);
+    rayon_core_1_4_0.default = true;
+  }) [ rayon_core_1_4_0_features ];
+  rayon_core_1_4_0 = { features?(rayon_core_1_4_0_features {}) }: rayon_core_1_4_0_ {
+    dependencies = mapFeatures features ([ crossbeam_deque_0_2_0 lazy_static_1_0_0 libc_0_2_41 num_cpus_1_8_0 rand_0_4_2 ]);
+  };
+  rayon_core_1_4_0_features = f: updateFeatures f (rec {
+    crossbeam_deque_0_2_0.default = true;
+    lazy_static_1_0_0.default = true;
+    libc_0_2_41.default = true;
+    num_cpus_1_8_0.default = true;
+    rand_0_4_2.default = true;
+    rayon_core_1_4_0.default = (f.rayon_core_1_4_0.default or true);
+  }) [ crossbeam_deque_0_2_0_features lazy_static_1_0_0_features libc_0_2_41_features num_cpus_1_8_0_features rand_0_4_2_features ];
+  redox_syscall_0_1_38 = { features?(redox_syscall_0_1_38_features {}) }: redox_syscall_0_1_38_ {};
+  redox_syscall_0_1_38_features = f: updateFeatures f (rec {
+    redox_syscall_0_1_38.default = (f.redox_syscall_0_1_38.default or true);
+  }) [];
+  redox_termios_0_1_1 = { features?(redox_termios_0_1_1_features {}) }: redox_termios_0_1_1_ {
+    dependencies = mapFeatures features ([ redox_syscall_0_1_38 ]);
+  };
+  redox_termios_0_1_1_features = f: updateFeatures f (rec {
+    redox_syscall_0_1_38.default = true;
+    redox_termios_0_1_1.default = (f.redox_termios_0_1_1.default or true);
+  }) [ redox_syscall_0_1_38_features ];
+  regex_0_2_11 = { features?(regex_0_2_11_features {}) }: regex_0_2_11_ {
+    dependencies = mapFeatures features ([ aho_corasick_0_6_4 memchr_2_0_1 regex_syntax_0_5_6 thread_local_0_3_5 utf8_ranges_1_0_0 ]);
+    features = mkFeatures (features.regex_0_2_11 or {});
+  };
+  regex_0_2_11_features = f: updateFeatures f (rec {
+    aho_corasick_0_6_4.default = true;
+    memchr_2_0_1.default = true;
+    regex_0_2_11.default = (f.regex_0_2_11.default or true);
+    regex_0_2_11.pattern =
+      (f.regex_0_2_11.pattern or false) ||
+      (f.regex_0_2_11.unstable or false) ||
+      (regex_0_2_11.unstable or false);
+    regex_syntax_0_5_6.default = true;
+    thread_local_0_3_5.default = true;
+    utf8_ranges_1_0_0.default = true;
+  }) [ aho_corasick_0_6_4_features memchr_2_0_1_features regex_syntax_0_5_6_features thread_local_0_3_5_features utf8_ranges_1_0_0_features ];
+  regex_1_0_0 = { features?(regex_1_0_0_features {}) }: regex_1_0_0_ {
+    dependencies = mapFeatures features ([ aho_corasick_0_6_4 memchr_2_0_1 regex_syntax_0_6_0 thread_local_0_3_5 utf8_ranges_1_0_0 ]);
+    features = mkFeatures (features.regex_1_0_0 or {});
+  };
+  regex_1_0_0_features = f: updateFeatures f (rec {
+    aho_corasick_0_6_4.default = true;
+    memchr_2_0_1.default = true;
+    regex_1_0_0.default = (f.regex_1_0_0.default or true);
+    regex_1_0_0.pattern =
+      (f.regex_1_0_0.pattern or false) ||
+      (f.regex_1_0_0.unstable or false) ||
+      (regex_1_0_0.unstable or false);
+    regex_1_0_0.use_std =
+      (f.regex_1_0_0.use_std or false) ||
+      (f.regex_1_0_0.default or false) ||
+      (regex_1_0_0.default or false);
+    regex_syntax_0_6_0.default = true;
+    thread_local_0_3_5.default = true;
+    utf8_ranges_1_0_0.default = true;
+  }) [ aho_corasick_0_6_4_features memchr_2_0_1_features regex_syntax_0_6_0_features thread_local_0_3_5_features utf8_ranges_1_0_0_features ];
+  regex_syntax_0_5_6 = { features?(regex_syntax_0_5_6_features {}) }: regex_syntax_0_5_6_ {
+    dependencies = mapFeatures features ([ ucd_util_0_1_1 ]);
+  };
+  regex_syntax_0_5_6_features = f: updateFeatures f (rec {
+    regex_syntax_0_5_6.default = (f.regex_syntax_0_5_6.default or true);
+    ucd_util_0_1_1.default = true;
+  }) [ ucd_util_0_1_1_features ];
+  regex_syntax_0_6_0 = { features?(regex_syntax_0_6_0_features {}) }: regex_syntax_0_6_0_ {
+    dependencies = mapFeatures features ([ ucd_util_0_1_1 ]);
+  };
+  regex_syntax_0_6_0_features = f: updateFeatures f (rec {
+    regex_syntax_0_6_0.default = (f.regex_syntax_0_6_0.default or true);
+    ucd_util_0_1_1.default = true;
+  }) [ ucd_util_0_1_1_features ];
+  relay_0_1_1 = { features?(relay_0_1_1_features {}) }: relay_0_1_1_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 ]);
+  };
+  relay_0_1_1_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    relay_0_1_1.default = (f.relay_0_1_1.default or true);
+  }) [ futures_0_1_21_features ];
+  remove_dir_all_0_5_1 = { features?(remove_dir_all_0_5_1_features {}) }: remove_dir_all_0_5_1_ {
+    dependencies = (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  remove_dir_all_0_5_1_features = f: updateFeatures f (rec {
+    remove_dir_all_0_5_1.default = (f.remove_dir_all_0_5_1.default or true);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.errhandlingapi = true;
+    winapi_0_3_4.fileapi = true;
+    winapi_0_3_4.std = true;
+    winapi_0_3_4.winbase = true;
+    winapi_0_3_4.winerror = true;
+  }) [ winapi_0_3_4_features ];
+  reqwest_0_8_5 = { features?(reqwest_0_8_5_features {}) }: reqwest_0_8_5_ {
+    dependencies = mapFeatures features ([ bytes_0_4_7 encoding_rs_0_7_2 futures_0_1_21 hyper_0_11_27 hyper_tls_0_1_3 libflate_0_1_14 log_0_4_1 mime_guess_2_0_0_alpha_4 native_tls_0_1_5 serde_1_0_59 serde_json_1_0_17 serde_urlencoded_0_5_2 tokio_core_0_1_17 tokio_io_0_1_6 tokio_tls_0_1_4 url_1_7_0 uuid_0_5_1 ]);
+    features = mkFeatures (features.reqwest_0_8_5 or {});
+  };
+  reqwest_0_8_5_features = f: updateFeatures f (rec {
+    bytes_0_4_7.default = true;
+    encoding_rs_0_7_2.default = true;
+    futures_0_1_21.default = true;
+    hyper_0_11_27.default = true;
+    hyper_tls_0_1_3.default = true;
+    libflate_0_1_14.default = true;
+    log_0_4_1.default = true;
+    mime_guess_2_0_0_alpha_4.default = true;
+    native_tls_0_1_5.default = true;
+    reqwest_0_8_5.default = (f.reqwest_0_8_5.default or true);
+    serde_1_0_59.default = true;
+    serde_json_1_0_17.default = true;
+    serde_urlencoded_0_5_2.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_tls_0_1_4.default = true;
+    url_1_7_0.default = true;
+    uuid_0_5_1."v4" = true;
+    uuid_0_5_1.default = true;
+  }) [ bytes_0_4_7_features encoding_rs_0_7_2_features futures_0_1_21_features hyper_0_11_27_features hyper_tls_0_1_3_features libflate_0_1_14_features log_0_4_1_features mime_guess_2_0_0_alpha_4_features native_tls_0_1_5_features serde_1_0_59_features serde_json_1_0_17_features serde_urlencoded_0_5_2_features tokio_core_0_1_17_features tokio_io_0_1_6_features tokio_tls_0_1_4_features url_1_7_0_features uuid_0_5_1_features ];
+  resolv_conf_0_6_0 = { features?(resolv_conf_0_6_0_features {}) }: resolv_conf_0_6_0_ {
+    dependencies = mapFeatures features ([ quick_error_1_2_1 ]
+      ++ (if features.resolv_conf_0_6_0.hostname or false then [ hostname_0_1_4 ] else []));
+    features = mkFeatures (features.resolv_conf_0_6_0 or {});
+  };
+  resolv_conf_0_6_0_features = f: updateFeatures f (rec {
+    hostname_0_1_4.default = true;
+    quick_error_1_2_1.default = true;
+    resolv_conf_0_6_0.default = (f.resolv_conf_0_6_0.default or true);
+    resolv_conf_0_6_0.hostname =
+      (f.resolv_conf_0_6_0.hostname or false) ||
+      (f.resolv_conf_0_6_0.system or false) ||
+      (resolv_conf_0_6_0.system or false);
+  }) [ hostname_0_1_4_features quick_error_1_2_1_features ];
+  ring_0_12_1 = { features?(ring_0_12_1_features {}) }: ring_0_12_1_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 untrusted_0_5_1 ])
+      ++ (if kernel == "redox" || (kernel == "linux" || kernel == "darwin") && !(kernel == "darwin" || kernel == "ios") then mapFeatures features ([ lazy_static_0_2_11 ]) else []);
+    buildDependencies = mapFeatures features ([ gcc_0_3_54 rayon_0_8_2 ]);
+    features = mkFeatures (features.ring_0_12_1 or {});
+  };
+  ring_0_12_1_features = f: updateFeatures f (rec {
+    gcc_0_3_54.default = true;
+    lazy_static_0_2_11.default = true;
+    libc_0_2_41.default = true;
+    rayon_0_8_2.default = true;
+    ring_0_12_1.default = (f.ring_0_12_1.default or true);
+    ring_0_12_1.dev_urandom_fallback =
+      (f.ring_0_12_1.dev_urandom_fallback or false) ||
+      (f.ring_0_12_1.default or false) ||
+      (ring_0_12_1.default or false);
+    ring_0_12_1.use_heap =
+      (f.ring_0_12_1.use_heap or false) ||
+      (f.ring_0_12_1.default or false) ||
+      (ring_0_12_1.default or false) ||
+      (f.ring_0_12_1.rsa_signing or false) ||
+      (ring_0_12_1.rsa_signing or false);
+    untrusted_0_5_1.default = true;
+  }) [ libc_0_2_41_features untrusted_0_5_1_features gcc_0_3_54_features rayon_0_8_2_features lazy_static_0_2_11_features ];
+  rustc_demangle_0_1_8 = { features?(rustc_demangle_0_1_8_features {}) }: rustc_demangle_0_1_8_ {};
+  rustc_demangle_0_1_8_features = f: updateFeatures f (rec {
+    rustc_demangle_0_1_8.default = (f.rustc_demangle_0_1_8.default or true);
+  }) [];
+  safemem_0_2_0 = { features?(safemem_0_2_0_features {}) }: safemem_0_2_0_ {};
+  safemem_0_2_0_features = f: updateFeatures f (rec {
+    safemem_0_2_0.default = (f.safemem_0_2_0.default or true);
+  }) [];
+  same_file_1_0_2 = { features?(same_file_1_0_2_features {}) }: same_file_1_0_2_ {
+    dependencies = (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  same_file_1_0_2_features = f: updateFeatures f (rec {
+    same_file_1_0_2.default = (f.same_file_1_0_2.default or true);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.fileapi = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.processenv = true;
+    winapi_0_3_4.std = true;
+    winapi_0_3_4.winbase = true;
+  }) [ winapi_0_3_4_features ];
+  schannel_0_1_12 = { features?(schannel_0_1_12_features {}) }: schannel_0_1_12_ {
+    dependencies = mapFeatures features ([ lazy_static_1_0_0 winapi_0_3_4 ]);
+  };
+  schannel_0_1_12_features = f: updateFeatures f (rec {
+    lazy_static_1_0_0.default = true;
+    schannel_0_1_12.default = (f.schannel_0_1_12.default or true);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.lmcons = true;
+    winapi_0_3_4.minschannel = true;
+    winapi_0_3_4.schannel = true;
+    winapi_0_3_4.securitybaseapi = true;
+    winapi_0_3_4.sysinfoapi = true;
+    winapi_0_3_4.timezoneapi = true;
+    winapi_0_3_4.winbase = true;
+    winapi_0_3_4.wincrypt = true;
+    winapi_0_3_4.winerror = true;
+  }) [ lazy_static_1_0_0_features winapi_0_3_4_features ];
+  scheduled_thread_pool_0_2_0 = { features?(scheduled_thread_pool_0_2_0_features {}) }: scheduled_thread_pool_0_2_0_ {
+    dependencies = mapFeatures features ([ antidote_1_0_0 ]);
+  };
+  scheduled_thread_pool_0_2_0_features = f: updateFeatures f (rec {
+    antidote_1_0_0.default = true;
+    scheduled_thread_pool_0_2_0.default = (f.scheduled_thread_pool_0_2_0.default or true);
+  }) [ antidote_1_0_0_features ];
+  scoped_tls_0_1_2 = { features?(scoped_tls_0_1_2_features {}) }: scoped_tls_0_1_2_ {
+    features = mkFeatures (features.scoped_tls_0_1_2 or {});
+  };
+  scoped_tls_0_1_2_features = f: updateFeatures f (rec {
+    scoped_tls_0_1_2.default = (f.scoped_tls_0_1_2.default or true);
+  }) [];
+  scopeguard_0_3_3 = { features?(scopeguard_0_3_3_features {}) }: scopeguard_0_3_3_ {
+    features = mkFeatures (features.scopeguard_0_3_3 or {});
+  };
+  scopeguard_0_3_3_features = f: updateFeatures f (rec {
+    scopeguard_0_3_3.default = (f.scopeguard_0_3_3.default or true);
+    scopeguard_0_3_3.use_std =
+      (f.scopeguard_0_3_3.use_std or false) ||
+      (f.scopeguard_0_3_3.default or false) ||
+      (scopeguard_0_3_3.default or false);
+  }) [];
+  security_framework_0_1_16 = { features?(security_framework_0_1_16_features {}) }: security_framework_0_1_16_ {
+    dependencies = mapFeatures features ([ core_foundation_0_2_3 core_foundation_sys_0_2_3 libc_0_2_41 security_framework_sys_0_1_16 ]);
+    features = mkFeatures (features.security_framework_0_1_16 or {});
+  };
+  security_framework_0_1_16_features = f: updateFeatures f (rec {
+    core_foundation_0_2_3.default = true;
+    core_foundation_sys_0_2_3.default = true;
+    libc_0_2_41.default = true;
+    security_framework_0_1_16."OSX_10_10" =
+      (f.security_framework_0_1_16."OSX_10_10" or false) ||
+      (f.security_framework_0_1_16."OSX_10_11" or false) ||
+      (security_framework_0_1_16."OSX_10_11" or false);
+    security_framework_0_1_16."OSX_10_11" =
+      (f.security_framework_0_1_16."OSX_10_11" or false) ||
+      (f.security_framework_0_1_16."OSX_10_12" or false) ||
+      (security_framework_0_1_16."OSX_10_12" or false);
+    security_framework_0_1_16."OSX_10_8" =
+      (f.security_framework_0_1_16."OSX_10_8" or false) ||
+      (f.security_framework_0_1_16."OSX_10_9" or false) ||
+      (security_framework_0_1_16."OSX_10_9" or false);
+    security_framework_0_1_16."OSX_10_9" =
+      (f.security_framework_0_1_16."OSX_10_9" or false) ||
+      (f.security_framework_0_1_16."OSX_10_10" or false) ||
+      (security_framework_0_1_16."OSX_10_10" or false);
+    security_framework_0_1_16.default = (f.security_framework_0_1_16.default or true);
+    security_framework_sys_0_1_16."OSX_10_10" =
+      (f.security_framework_sys_0_1_16."OSX_10_10" or false) ||
+      (security_framework_0_1_16."OSX_10_10" or false) ||
+      (f.security_framework_0_1_16."OSX_10_10" or false);
+    security_framework_sys_0_1_16."OSX_10_11" =
+      (f.security_framework_sys_0_1_16."OSX_10_11" or false) ||
+      (security_framework_0_1_16."OSX_10_11" or false) ||
+      (f.security_framework_0_1_16."OSX_10_11" or false) ||
+      (security_framework_0_1_16."OSX_10_12" or false) ||
+      (f.security_framework_0_1_16."OSX_10_12" or false);
+    security_framework_sys_0_1_16."OSX_10_8" =
+      (f.security_framework_sys_0_1_16."OSX_10_8" or false) ||
+      (security_framework_0_1_16."OSX_10_8" or false) ||
+      (f.security_framework_0_1_16."OSX_10_8" or false);
+    security_framework_sys_0_1_16."OSX_10_9" =
+      (f.security_framework_sys_0_1_16."OSX_10_9" or false) ||
+      (security_framework_0_1_16."OSX_10_9" or false) ||
+      (f.security_framework_0_1_16."OSX_10_9" or false);
+    security_framework_sys_0_1_16.default = true;
+  }) [ core_foundation_0_2_3_features core_foundation_sys_0_2_3_features libc_0_2_41_features security_framework_sys_0_1_16_features ];
+  security_framework_sys_0_1_16 = { features?(security_framework_sys_0_1_16_features {}) }: security_framework_sys_0_1_16_ {
+    dependencies = mapFeatures features ([ core_foundation_sys_0_2_3 libc_0_2_41 ]);
+    features = mkFeatures (features.security_framework_sys_0_1_16 or {});
+  };
+  security_framework_sys_0_1_16_features = f: updateFeatures f (rec {
+    core_foundation_sys_0_2_3.default = true;
+    libc_0_2_41.default = true;
+    security_framework_sys_0_1_16."OSX_10_10" =
+      (f.security_framework_sys_0_1_16."OSX_10_10" or false) ||
+      (f.security_framework_sys_0_1_16."OSX_10_11" or false) ||
+      (security_framework_sys_0_1_16."OSX_10_11" or false);
+    security_framework_sys_0_1_16."OSX_10_11" =
+      (f.security_framework_sys_0_1_16."OSX_10_11" or false) ||
+      (f.security_framework_sys_0_1_16."OSX_10_12" or false) ||
+      (security_framework_sys_0_1_16."OSX_10_12" or false);
+    security_framework_sys_0_1_16."OSX_10_8" =
+      (f.security_framework_sys_0_1_16."OSX_10_8" or false) ||
+      (f.security_framework_sys_0_1_16."OSX_10_9" or false) ||
+      (security_framework_sys_0_1_16."OSX_10_9" or false);
+    security_framework_sys_0_1_16."OSX_10_9" =
+      (f.security_framework_sys_0_1_16."OSX_10_9" or false) ||
+      (f.security_framework_sys_0_1_16."OSX_10_10" or false) ||
+      (security_framework_sys_0_1_16."OSX_10_10" or false);
+    security_framework_sys_0_1_16.default = (f.security_framework_sys_0_1_16.default or true);
+  }) [ core_foundation_sys_0_2_3_features libc_0_2_41_features ];
+  semver_0_9_0 = { features?(semver_0_9_0_features {}) }: semver_0_9_0_ {
+    dependencies = mapFeatures features ([ semver_parser_0_7_0 ]
+      ++ (if features.semver_0_9_0.serde or false then [ serde_1_0_59 ] else []));
+    features = mkFeatures (features.semver_0_9_0 or {});
+  };
+  semver_0_9_0_features = f: updateFeatures f (rec {
+    semver_0_9_0.default = (f.semver_0_9_0.default or true);
+    semver_0_9_0.serde =
+      (f.semver_0_9_0.serde or false) ||
+      (f.semver_0_9_0.ci or false) ||
+      (semver_0_9_0.ci or false);
+    semver_parser_0_7_0.default = true;
+    serde_1_0_59.default = true;
+  }) [ semver_parser_0_7_0_features serde_1_0_59_features ];
+  semver_parser_0_7_0 = { features?(semver_parser_0_7_0_features {}) }: semver_parser_0_7_0_ {};
+  semver_parser_0_7_0_features = f: updateFeatures f (rec {
+    semver_parser_0_7_0.default = (f.semver_parser_0_7_0.default or true);
+  }) [];
+  serde_1_0_59 = { features?(serde_1_0_59_features {}) }: serde_1_0_59_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.serde_1_0_59 or {});
+  };
+  serde_1_0_59_features = f: updateFeatures f (rec {
+    serde_1_0_59.default = (f.serde_1_0_59.default or true);
+    serde_1_0_59.serde_derive =
+      (f.serde_1_0_59.serde_derive or false) ||
+      (f.serde_1_0_59.derive or false) ||
+      (serde_1_0_59.derive or false);
+    serde_1_0_59.std =
+      (f.serde_1_0_59.std or false) ||
+      (f.serde_1_0_59.default or false) ||
+      (serde_1_0_59.default or false);
+    serde_1_0_59.unstable =
+      (f.serde_1_0_59.unstable or false) ||
+      (f.serde_1_0_59.alloc or false) ||
+      (serde_1_0_59.alloc or false);
+  }) [];
+  serde_derive_1_0_59 = { features?(serde_derive_1_0_59_features {}) }: serde_derive_1_0_59_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_4_3 quote_0_6_2 syn_0_14_0 ]);
+    features = mkFeatures (features.serde_derive_1_0_59 or {});
+  };
+  serde_derive_1_0_59_features = f: updateFeatures f (rec {
+    proc_macro2_0_4_3.default = true;
+    quote_0_6_2.default = true;
+    serde_derive_1_0_59.default = (f.serde_derive_1_0_59.default or true);
+    syn_0_14_0.default = true;
+    syn_0_14_0.visit = true;
+  }) [ proc_macro2_0_4_3_features quote_0_6_2_features syn_0_14_0_features ];
+  serde_json_1_0_17 = { features?(serde_json_1_0_17_features {}) }: serde_json_1_0_17_ {
+    dependencies = mapFeatures features ([ dtoa_0_4_2 itoa_0_4_1 serde_1_0_59 ]);
+    features = mkFeatures (features.serde_json_1_0_17 or {});
+  };
+  serde_json_1_0_17_features = f: updateFeatures f (rec {
+    dtoa_0_4_2.default = true;
+    itoa_0_4_1.default = true;
+    serde_1_0_59.default = true;
+    serde_json_1_0_17."linked-hash-map" =
+      (f.serde_json_1_0_17."linked-hash-map" or false) ||
+      (f.serde_json_1_0_17.preserve_order or false) ||
+      (serde_json_1_0_17.preserve_order or false);
+    serde_json_1_0_17.default = (f.serde_json_1_0_17.default or true);
+  }) [ dtoa_0_4_2_features itoa_0_4_1_features serde_1_0_59_features ];
+  serde_urlencoded_0_5_2 = { features?(serde_urlencoded_0_5_2_features {}) }: serde_urlencoded_0_5_2_ {
+    dependencies = mapFeatures features ([ dtoa_0_4_2 itoa_0_4_1 serde_1_0_59 url_1_7_0 ]);
+  };
+  serde_urlencoded_0_5_2_features = f: updateFeatures f (rec {
+    dtoa_0_4_2.default = true;
+    itoa_0_4_1.default = true;
+    serde_1_0_59.default = true;
+    serde_urlencoded_0_5_2.default = (f.serde_urlencoded_0_5_2.default or true);
+    url_1_7_0.default = true;
+  }) [ dtoa_0_4_2_features itoa_0_4_1_features serde_1_0_59_features url_1_7_0_features ];
+  sha1_0_6_0 = { features?(sha1_0_6_0_features {}) }: sha1_0_6_0_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.sha1_0_6_0 or {});
+  };
+  sha1_0_6_0_features = f: updateFeatures f (rec {
+    sha1_0_6_0.default = (f.sha1_0_6_0.default or true);
+  }) [];
+  siphasher_0_2_2 = { features?(siphasher_0_2_2_features {}) }: siphasher_0_2_2_ {
+    dependencies = mapFeatures features ([]);
+  };
+  siphasher_0_2_2_features = f: updateFeatures f (rec {
+    siphasher_0_2_2.default = (f.siphasher_0_2_2.default or true);
+  }) [];
+  skeptic_0_13_3 = { features?(skeptic_0_13_3_features {}) }: skeptic_0_13_3_ {
+    dependencies = mapFeatures features ([ bytecount_0_3_1 cargo_metadata_0_5_4 error_chain_0_11_0 glob_0_2_11 pulldown_cmark_0_1_2 serde_json_1_0_17 tempdir_0_3_7 walkdir_2_1_4 ]);
+  };
+  skeptic_0_13_3_features = f: updateFeatures f (rec {
+    bytecount_0_3_1.default = true;
+    cargo_metadata_0_5_4.default = true;
+    error_chain_0_11_0.default = (f.error_chain_0_11_0.default or false);
+    glob_0_2_11.default = true;
+    pulldown_cmark_0_1_2.default = (f.pulldown_cmark_0_1_2.default or false);
+    serde_json_1_0_17.default = true;
+    skeptic_0_13_3.default = (f.skeptic_0_13_3.default or true);
+    tempdir_0_3_7.default = true;
+    walkdir_2_1_4.default = true;
+  }) [ bytecount_0_3_1_features cargo_metadata_0_5_4_features error_chain_0_11_0_features glob_0_2_11_features pulldown_cmark_0_1_2_features serde_json_1_0_17_features tempdir_0_3_7_features walkdir_2_1_4_features ];
+  slab_0_3_0 = { features?(slab_0_3_0_features {}) }: slab_0_3_0_ {};
+  slab_0_3_0_features = f: updateFeatures f (rec {
+    slab_0_3_0.default = (f.slab_0_3_0.default or true);
+  }) [];
+  slab_0_4_0 = { features?(slab_0_4_0_features {}) }: slab_0_4_0_ {};
+  slab_0_4_0_features = f: updateFeatures f (rec {
+    slab_0_4_0.default = (f.slab_0_4_0.default or true);
+  }) [];
+  smallvec_0_2_1 = { features?(smallvec_0_2_1_features {}) }: smallvec_0_2_1_ {};
+  smallvec_0_2_1_features = f: updateFeatures f (rec {
+    smallvec_0_2_1.default = (f.smallvec_0_2_1.default or true);
+  }) [];
+  smallvec_0_6_1 = { features?(smallvec_0_6_1_features {}) }: smallvec_0_6_1_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.smallvec_0_6_1 or {});
+  };
+  smallvec_0_6_1_features = f: updateFeatures f (rec {
+    smallvec_0_6_1.default = (f.smallvec_0_6_1.default or true);
+    smallvec_0_6_1.std =
+      (f.smallvec_0_6_1.std or false) ||
+      (f.smallvec_0_6_1.default or false) ||
+      (smallvec_0_6_1.default or false);
+  }) [];
+  socket2_0_3_5 = { features?(socket2_0_3_5_features {}) }: socket2_0_3_5_ {
+    dependencies = (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ cfg_if_0_1_3 libc_0_2_41 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+    features = mkFeatures (features.socket2_0_3_5 or {});
+  };
+  socket2_0_3_5_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = true;
+    libc_0_2_41.default = true;
+    socket2_0_3_5.default = (f.socket2_0_3_5.default or true);
+    winapi_0_3_4."ws2def" = true;
+    winapi_0_3_4."ws2ipdef" = true;
+    winapi_0_3_4."ws2tcpip" = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.handleapi = true;
+    winapi_0_3_4.minwindef = true;
+  }) [ cfg_if_0_1_3_features libc_0_2_41_features winapi_0_3_4_features ];
+  stable_deref_trait_1_0_0 = { features?(stable_deref_trait_1_0_0_features {}) }: stable_deref_trait_1_0_0_ {
+    features = mkFeatures (features.stable_deref_trait_1_0_0 or {});
+  };
+  stable_deref_trait_1_0_0_features = f: updateFeatures f (rec {
+    stable_deref_trait_1_0_0.default = (f.stable_deref_trait_1_0_0.default or true);
+    stable_deref_trait_1_0_0.std =
+      (f.stable_deref_trait_1_0_0.std or false) ||
+      (f.stable_deref_trait_1_0_0.default or false) ||
+      (stable_deref_trait_1_0_0.default or false);
+  }) [];
+  string_0_1_0 = { features?(string_0_1_0_features {}) }: string_0_1_0_ {};
+  string_0_1_0_features = f: updateFeatures f (rec {
+    string_0_1_0.default = (f.string_0_1_0.default or true);
+  }) [];
+  strsim_0_7_0 = { features?(strsim_0_7_0_features {}) }: strsim_0_7_0_ {};
+  strsim_0_7_0_features = f: updateFeatures f (rec {
+    strsim_0_7_0.default = (f.strsim_0_7_0.default or true);
+  }) [];
+  syn_0_11_11 = { features?(syn_0_11_11_features {}) }: syn_0_11_11_ {
+    dependencies = mapFeatures features ([ ]
+      ++ (if features.syn_0_11_11.quote or false then [ quote_0_3_15 ] else [])
+      ++ (if features.syn_0_11_11.synom or false then [ synom_0_11_3 ] else [])
+      ++ (if features.syn_0_11_11."unicode-xid" or false then [ unicode_xid_0_0_4 ] else []));
+    features = mkFeatures (features.syn_0_11_11 or {});
+  };
+  syn_0_11_11_features = f: updateFeatures f (rec {
+    quote_0_3_15.default = true;
+    syn_0_11_11."unicode-xid" =
+      (f.syn_0_11_11."unicode-xid" or false) ||
+      (f.syn_0_11_11.parsing or false) ||
+      (syn_0_11_11.parsing or false);
+    syn_0_11_11.default = (f.syn_0_11_11.default or true);
+    syn_0_11_11.parsing =
+      (f.syn_0_11_11.parsing or false) ||
+      (f.syn_0_11_11.default or false) ||
+      (syn_0_11_11.default or false);
+    syn_0_11_11.printing =
+      (f.syn_0_11_11.printing or false) ||
+      (f.syn_0_11_11.default or false) ||
+      (syn_0_11_11.default or false);
+    syn_0_11_11.quote =
+      (f.syn_0_11_11.quote or false) ||
+      (f.syn_0_11_11.printing or false) ||
+      (syn_0_11_11.printing or false);
+    syn_0_11_11.synom =
+      (f.syn_0_11_11.synom or false) ||
+      (f.syn_0_11_11.parsing or false) ||
+      (syn_0_11_11.parsing or false);
+    synom_0_11_3.default = true;
+    unicode_xid_0_0_4.default = true;
+  }) [ quote_0_3_15_features synom_0_11_3_features unicode_xid_0_0_4_features ];
+  syn_0_12_15 = { features?(syn_0_12_15_features {}) }: syn_0_12_15_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_2_3 unicode_xid_0_1_0 ]
+      ++ (if features.syn_0_12_15.quote or false then [ quote_0_4_2 ] else []));
+    features = mkFeatures (features.syn_0_12_15 or {});
+  };
+  syn_0_12_15_features = f: updateFeatures f (rec {
+    proc_macro2_0_2_3.default = true;
+    quote_0_4_2.default = true;
+    syn_0_12_15."clone-impls" =
+      (f.syn_0_12_15."clone-impls" or false) ||
+      (f.syn_0_12_15.default or false) ||
+      (syn_0_12_15.default or false);
+    syn_0_12_15.default = (f.syn_0_12_15.default or true);
+    syn_0_12_15.derive =
+      (f.syn_0_12_15.derive or false) ||
+      (f.syn_0_12_15.default or false) ||
+      (syn_0_12_15.default or false);
+    syn_0_12_15.parsing =
+      (f.syn_0_12_15.parsing or false) ||
+      (f.syn_0_12_15.default or false) ||
+      (syn_0_12_15.default or false);
+    syn_0_12_15.printing =
+      (f.syn_0_12_15.printing or false) ||
+      (f.syn_0_12_15.default or false) ||
+      (syn_0_12_15.default or false);
+    syn_0_12_15.quote =
+      (f.syn_0_12_15.quote or false) ||
+      (f.syn_0_12_15.printing or false) ||
+      (syn_0_12_15.printing or false);
+    unicode_xid_0_1_0.default = true;
+  }) [ proc_macro2_0_2_3_features quote_0_4_2_features unicode_xid_0_1_0_features ];
+  syn_0_13_11 = { features?(syn_0_13_11_features {}) }: syn_0_13_11_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_3_8 unicode_xid_0_1_0 ]
+      ++ (if features.syn_0_13_11.quote or false then [ quote_0_5_2 ] else []));
+    features = mkFeatures (features.syn_0_13_11 or {});
+  };
+  syn_0_13_11_features = f: updateFeatures f (rec {
+    proc_macro2_0_3_8."proc-macro" =
+      (f.proc_macro2_0_3_8."proc-macro" or false) ||
+      (syn_0_13_11."proc-macro" or false) ||
+      (f.syn_0_13_11."proc-macro" or false);
+    proc_macro2_0_3_8.default = (f.proc_macro2_0_3_8.default or false);
+    quote_0_5_2."proc-macro" =
+      (f.quote_0_5_2."proc-macro" or false) ||
+      (syn_0_13_11."proc-macro" or false) ||
+      (f.syn_0_13_11."proc-macro" or false);
+    quote_0_5_2.default = (f.quote_0_5_2.default or false);
+    syn_0_13_11."clone-impls" =
+      (f.syn_0_13_11."clone-impls" or false) ||
+      (f.syn_0_13_11.default or false) ||
+      (syn_0_13_11.default or false);
+    syn_0_13_11."proc-macro" =
+      (f.syn_0_13_11."proc-macro" or false) ||
+      (f.syn_0_13_11.default or false) ||
+      (syn_0_13_11.default or false);
+    syn_0_13_11.default = (f.syn_0_13_11.default or true);
+    syn_0_13_11.derive =
+      (f.syn_0_13_11.derive or false) ||
+      (f.syn_0_13_11.default or false) ||
+      (syn_0_13_11.default or false);
+    syn_0_13_11.parsing =
+      (f.syn_0_13_11.parsing or false) ||
+      (f.syn_0_13_11.default or false) ||
+      (syn_0_13_11.default or false);
+    syn_0_13_11.printing =
+      (f.syn_0_13_11.printing or false) ||
+      (f.syn_0_13_11.default or false) ||
+      (syn_0_13_11.default or false);
+    syn_0_13_11.quote =
+      (f.syn_0_13_11.quote or false) ||
+      (f.syn_0_13_11.printing or false) ||
+      (syn_0_13_11.printing or false);
+    unicode_xid_0_1_0.default = true;
+  }) [ proc_macro2_0_3_8_features quote_0_5_2_features unicode_xid_0_1_0_features ];
+  syn_0_14_0 = { features?(syn_0_14_0_features {}) }: syn_0_14_0_ {
+    dependencies = mapFeatures features ([ proc_macro2_0_4_3 unicode_xid_0_1_0 ]
+      ++ (if features.syn_0_14_0.quote or false then [ quote_0_6_2 ] else []));
+    features = mkFeatures (features.syn_0_14_0 or {});
+  };
+  syn_0_14_0_features = f: updateFeatures f (rec {
+    proc_macro2_0_4_3."proc-macro" =
+      (f.proc_macro2_0_4_3."proc-macro" or false) ||
+      (syn_0_14_0."proc-macro" or false) ||
+      (f.syn_0_14_0."proc-macro" or false);
+    proc_macro2_0_4_3.default = (f.proc_macro2_0_4_3.default or false);
+    quote_0_6_2."proc-macro" =
+      (f.quote_0_6_2."proc-macro" or false) ||
+      (syn_0_14_0."proc-macro" or false) ||
+      (f.syn_0_14_0."proc-macro" or false);
+    quote_0_6_2.default = (f.quote_0_6_2.default or false);
+    syn_0_14_0."clone-impls" =
+      (f.syn_0_14_0."clone-impls" or false) ||
+      (f.syn_0_14_0.default or false) ||
+      (syn_0_14_0.default or false);
+    syn_0_14_0."proc-macro" =
+      (f.syn_0_14_0."proc-macro" or false) ||
+      (f.syn_0_14_0.default or false) ||
+      (syn_0_14_0.default or false);
+    syn_0_14_0.default = (f.syn_0_14_0.default or true);
+    syn_0_14_0.derive =
+      (f.syn_0_14_0.derive or false) ||
+      (f.syn_0_14_0.default or false) ||
+      (syn_0_14_0.default or false);
+    syn_0_14_0.parsing =
+      (f.syn_0_14_0.parsing or false) ||
+      (f.syn_0_14_0.default or false) ||
+      (syn_0_14_0.default or false);
+    syn_0_14_0.printing =
+      (f.syn_0_14_0.printing or false) ||
+      (f.syn_0_14_0.default or false) ||
+      (syn_0_14_0.default or false);
+    syn_0_14_0.quote =
+      (f.syn_0_14_0.quote or false) ||
+      (f.syn_0_14_0.printing or false) ||
+      (syn_0_14_0.printing or false);
+    unicode_xid_0_1_0.default = true;
+  }) [ proc_macro2_0_4_3_features quote_0_6_2_features unicode_xid_0_1_0_features ];
+  synom_0_11_3 = { features?(synom_0_11_3_features {}) }: synom_0_11_3_ {
+    dependencies = mapFeatures features ([ unicode_xid_0_0_4 ]);
+  };
+  synom_0_11_3_features = f: updateFeatures f (rec {
+    synom_0_11_3.default = (f.synom_0_11_3.default or true);
+    unicode_xid_0_0_4.default = true;
+  }) [ unicode_xid_0_0_4_features ];
+  synstructure_0_6_1 = { features?(synstructure_0_6_1_features {}) }: synstructure_0_6_1_ {
+    dependencies = mapFeatures features ([ quote_0_3_15 syn_0_11_11 ]);
+    features = mkFeatures (features.synstructure_0_6_1 or {});
+  };
+  synstructure_0_6_1_features = f: updateFeatures f (rec {
+    quote_0_3_15.default = true;
+    syn_0_11_11.default = true;
+    syn_0_11_11.visit = true;
+    synstructure_0_6_1.default = (f.synstructure_0_6_1.default or true);
+  }) [ quote_0_3_15_features syn_0_11_11_features ];
+  take_0_1_0 = { features?(take_0_1_0_features {}) }: take_0_1_0_ {};
+  take_0_1_0_features = f: updateFeatures f (rec {
+    take_0_1_0.default = (f.take_0_1_0.default or true);
+  }) [];
+  tempdir_0_3_7 = { features?(tempdir_0_3_7_features {}) }: tempdir_0_3_7_ {
+    dependencies = mapFeatures features ([ rand_0_4_2 remove_dir_all_0_5_1 ]);
+  };
+  tempdir_0_3_7_features = f: updateFeatures f (rec {
+    rand_0_4_2.default = true;
+    remove_dir_all_0_5_1.default = true;
+    tempdir_0_3_7.default = (f.tempdir_0_3_7.default or true);
+  }) [ rand_0_4_2_features remove_dir_all_0_5_1_features ];
+  termcolor_0_3_6 = { features?(termcolor_0_3_6_features {}) }: termcolor_0_3_6_ {
+    dependencies = (if kernel == "windows" then mapFeatures features ([ wincolor_0_1_6 ]) else []);
+  };
+  termcolor_0_3_6_features = f: updateFeatures f (rec {
+    termcolor_0_3_6.default = (f.termcolor_0_3_6.default or true);
+    wincolor_0_1_6.default = true;
+  }) [ wincolor_0_1_6_features ];
+  termion_1_5_1 = { features?(termion_1_5_1_features {}) }: termion_1_5_1_ {
+    dependencies = (if !(kernel == "redox") then mapFeatures features ([ libc_0_2_41 ]) else [])
+      ++ (if kernel == "redox" then mapFeatures features ([ redox_syscall_0_1_38 redox_termios_0_1_1 ]) else []);
+  };
+  termion_1_5_1_features = f: updateFeatures f (rec {
+    libc_0_2_41.default = true;
+    redox_syscall_0_1_38.default = true;
+    redox_termios_0_1_1.default = true;
+    termion_1_5_1.default = (f.termion_1_5_1.default or true);
+  }) [ libc_0_2_41_features redox_syscall_0_1_38_features redox_termios_0_1_1_features ];
+  textwrap_0_9_0 = { features?(textwrap_0_9_0_features {}) }: textwrap_0_9_0_ {
+    dependencies = mapFeatures features ([ unicode_width_0_1_5 ]);
+  };
+  textwrap_0_9_0_features = f: updateFeatures f (rec {
+    textwrap_0_9_0.default = (f.textwrap_0_9_0.default or true);
+    unicode_width_0_1_5.default = true;
+  }) [ unicode_width_0_1_5_features ];
+  thread_local_0_3_5 = { features?(thread_local_0_3_5_features {}) }: thread_local_0_3_5_ {
+    dependencies = mapFeatures features ([ lazy_static_1_0_0 unreachable_1_0_0 ]);
+  };
+  thread_local_0_3_5_features = f: updateFeatures f (rec {
+    lazy_static_1_0_0.default = true;
+    thread_local_0_3_5.default = (f.thread_local_0_3_5.default or true);
+    unreachable_1_0_0.default = true;
+  }) [ lazy_static_1_0_0_features unreachable_1_0_0_features ];
+  time_0_1_40 = { features?(time_0_1_40_features {}) }: time_0_1_40_ {
+    dependencies = mapFeatures features ([ libc_0_2_41 ])
+      ++ (if kernel == "redox" then mapFeatures features ([ redox_syscall_0_1_38 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  time_0_1_40_features = f: updateFeatures f (rec {
+    libc_0_2_41.default = true;
+    redox_syscall_0_1_38.default = true;
+    time_0_1_40.default = (f.time_0_1_40.default or true);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.minwinbase = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.ntdef = true;
+    winapi_0_3_4.profileapi = true;
+    winapi_0_3_4.std = true;
+    winapi_0_3_4.sysinfoapi = true;
+    winapi_0_3_4.timezoneapi = true;
+  }) [ libc_0_2_41_features redox_syscall_0_1_38_features winapi_0_3_4_features ];
+  tokio_0_1_6 = { features?(tokio_0_1_6_features {}) }: tokio_0_1_6_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 mio_0_6_14 tokio_executor_0_1_2 tokio_fs_0_1_0 tokio_io_0_1_6 tokio_reactor_0_1_1 tokio_tcp_0_1_0 tokio_threadpool_0_1_3 tokio_timer_0_2_3 tokio_udp_0_1_0 ]);
+  };
+  tokio_0_1_6_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    mio_0_6_14.default = true;
+    tokio_0_1_6.default = (f.tokio_0_1_6.default or true);
+    tokio_executor_0_1_2.default = true;
+    tokio_fs_0_1_0.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_reactor_0_1_1.default = true;
+    tokio_tcp_0_1_0.default = true;
+    tokio_threadpool_0_1_3.default = true;
+    tokio_timer_0_2_3.default = true;
+    tokio_udp_0_1_0.default = true;
+  }) [ futures_0_1_21_features mio_0_6_14_features tokio_executor_0_1_2_features tokio_fs_0_1_0_features tokio_io_0_1_6_features tokio_reactor_0_1_1_features tokio_tcp_0_1_0_features tokio_threadpool_0_1_3_features tokio_timer_0_2_3_features tokio_udp_0_1_0_features ];
+  tokio_core_0_1_17 = { features?(tokio_core_0_1_17_features {}) }: tokio_core_0_1_17_ {
+    dependencies = mapFeatures features ([ bytes_0_4_7 futures_0_1_21 iovec_0_1_2 log_0_4_1 mio_0_6_14 scoped_tls_0_1_2 tokio_0_1_6 tokio_executor_0_1_2 tokio_io_0_1_6 tokio_reactor_0_1_1 tokio_timer_0_2_3 ]);
+  };
+  tokio_core_0_1_17_features = f: updateFeatures f (rec {
+    bytes_0_4_7.default = true;
+    futures_0_1_21.default = true;
+    iovec_0_1_2.default = true;
+    log_0_4_1.default = true;
+    mio_0_6_14.default = true;
+    scoped_tls_0_1_2.default = true;
+    tokio_0_1_6.default = true;
+    tokio_core_0_1_17.default = (f.tokio_core_0_1_17.default or true);
+    tokio_executor_0_1_2.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_reactor_0_1_1.default = true;
+    tokio_timer_0_2_3.default = true;
+  }) [ bytes_0_4_7_features futures_0_1_21_features iovec_0_1_2_features log_0_4_1_features mio_0_6_14_features scoped_tls_0_1_2_features tokio_0_1_6_features tokio_executor_0_1_2_features tokio_io_0_1_6_features tokio_reactor_0_1_1_features tokio_timer_0_2_3_features ];
+  tokio_executor_0_1_2 = { features?(tokio_executor_0_1_2_features {}) }: tokio_executor_0_1_2_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 ]);
+    features = mkFeatures (features.tokio_executor_0_1_2 or {});
+  };
+  tokio_executor_0_1_2_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    tokio_executor_0_1_2."futures2" =
+      (f.tokio_executor_0_1_2."futures2" or false) ||
+      (f.tokio_executor_0_1_2."unstable-futures" or false) ||
+      (tokio_executor_0_1_2."unstable-futures" or false);
+    tokio_executor_0_1_2.default = (f.tokio_executor_0_1_2.default or true);
+  }) [ futures_0_1_21_features ];
+  tokio_fs_0_1_0 = { features?(tokio_fs_0_1_0_features {}) }: tokio_fs_0_1_0_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 tokio_io_0_1_6 tokio_threadpool_0_1_3 ]);
+  };
+  tokio_fs_0_1_0_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    tokio_fs_0_1_0.default = (f.tokio_fs_0_1_0.default or true);
+    tokio_io_0_1_6.default = true;
+    tokio_threadpool_0_1_3.default = true;
+  }) [ futures_0_1_21_features tokio_io_0_1_6_features tokio_threadpool_0_1_3_features ];
+  tokio_io_0_1_6 = { features?(tokio_io_0_1_6_features {}) }: tokio_io_0_1_6_ {
+    dependencies = mapFeatures features ([ bytes_0_4_7 futures_0_1_21 log_0_4_1 ]);
+  };
+  tokio_io_0_1_6_features = f: updateFeatures f (rec {
+    bytes_0_4_7.default = true;
+    futures_0_1_21.default = true;
+    log_0_4_1.default = true;
+    tokio_io_0_1_6.default = (f.tokio_io_0_1_6.default or true);
+  }) [ bytes_0_4_7_features futures_0_1_21_features log_0_4_1_features ];
+  tokio_proto_0_1_1 = { features?(tokio_proto_0_1_1_features {}) }: tokio_proto_0_1_1_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 log_0_3_9 net2_0_2_32 rand_0_3_22 slab_0_3_0 smallvec_0_2_1 take_0_1_0 tokio_core_0_1_17 tokio_io_0_1_6 tokio_service_0_1_0 ]);
+  };
+  tokio_proto_0_1_1_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    log_0_3_9.default = true;
+    net2_0_2_32.default = true;
+    rand_0_3_22.default = true;
+    slab_0_3_0.default = true;
+    smallvec_0_2_1.default = true;
+    take_0_1_0.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_proto_0_1_1.default = (f.tokio_proto_0_1_1.default or true);
+    tokio_service_0_1_0.default = true;
+  }) [ futures_0_1_21_features log_0_3_9_features net2_0_2_32_features rand_0_3_22_features slab_0_3_0_features smallvec_0_2_1_features take_0_1_0_features tokio_core_0_1_17_features tokio_io_0_1_6_features tokio_service_0_1_0_features ];
+  tokio_reactor_0_1_1 = { features?(tokio_reactor_0_1_1_features {}) }: tokio_reactor_0_1_1_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 log_0_4_1 mio_0_6_14 slab_0_4_0 tokio_executor_0_1_2 tokio_io_0_1_6 ]);
+    features = mkFeatures (features.tokio_reactor_0_1_1 or {});
+  };
+  tokio_reactor_0_1_1_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    log_0_4_1.default = true;
+    mio_0_6_14.default = true;
+    slab_0_4_0.default = true;
+    tokio_executor_0_1_2.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_reactor_0_1_1."futures2" =
+      (f.tokio_reactor_0_1_1."futures2" or false) ||
+      (f.tokio_reactor_0_1_1."unstable-futures" or false) ||
+      (tokio_reactor_0_1_1."unstable-futures" or false);
+    tokio_reactor_0_1_1.default = (f.tokio_reactor_0_1_1.default or true);
+  }) [ futures_0_1_21_features log_0_4_1_features mio_0_6_14_features slab_0_4_0_features tokio_executor_0_1_2_features tokio_io_0_1_6_features ];
+  tokio_service_0_1_0 = { features?(tokio_service_0_1_0_features {}) }: tokio_service_0_1_0_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 ]);
+  };
+  tokio_service_0_1_0_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    tokio_service_0_1_0.default = (f.tokio_service_0_1_0.default or true);
+  }) [ futures_0_1_21_features ];
+  tokio_signal_0_1_5 = { features?(tokio_signal_0_1_5_features {}) }: tokio_signal_0_1_5_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 mio_0_6_14 tokio_core_0_1_17 tokio_io_0_1_6 ])
+      ++ (if (kernel == "linux" || kernel == "darwin") then mapFeatures features ([ libc_0_2_41 mio_uds_0_6_6 ]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  tokio_signal_0_1_5_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    libc_0_2_41.default = true;
+    mio_0_6_14.default = true;
+    mio_uds_0_6_6.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_signal_0_1_5.default = (f.tokio_signal_0_1_5.default or true);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.wincon = true;
+  }) [ futures_0_1_21_features mio_0_6_14_features tokio_core_0_1_17_features tokio_io_0_1_6_features libc_0_2_41_features mio_uds_0_6_6_features winapi_0_3_4_features ];
+  tokio_tcp_0_1_0 = { features?(tokio_tcp_0_1_0_features {}) }: tokio_tcp_0_1_0_ {
+    dependencies = mapFeatures features ([ bytes_0_4_7 futures_0_1_21 iovec_0_1_2 mio_0_6_14 tokio_io_0_1_6 tokio_reactor_0_1_1 ]);
+    features = mkFeatures (features.tokio_tcp_0_1_0 or {});
+  };
+  tokio_tcp_0_1_0_features = f: updateFeatures f (rec {
+    bytes_0_4_7.default = true;
+    futures_0_1_21.default = true;
+    iovec_0_1_2.default = true;
+    mio_0_6_14.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_reactor_0_1_1.default = true;
+    tokio_tcp_0_1_0."futures2" =
+      (f.tokio_tcp_0_1_0."futures2" or false) ||
+      (f.tokio_tcp_0_1_0."unstable-futures" or false) ||
+      (tokio_tcp_0_1_0."unstable-futures" or false);
+    tokio_tcp_0_1_0.default = (f.tokio_tcp_0_1_0.default or true);
+  }) [ bytes_0_4_7_features futures_0_1_21_features iovec_0_1_2_features mio_0_6_14_features tokio_io_0_1_6_features tokio_reactor_0_1_1_features ];
+  tokio_threadpool_0_1_3 = { features?(tokio_threadpool_0_1_3_features {}) }: tokio_threadpool_0_1_3_ {
+    dependencies = mapFeatures features ([ crossbeam_deque_0_3_1 futures_0_1_21 log_0_4_1 num_cpus_1_8_0 rand_0_4_2 tokio_executor_0_1_2 ]);
+  };
+  tokio_threadpool_0_1_3_features = f: updateFeatures f (rec {
+    crossbeam_deque_0_3_1.default = true;
+    futures_0_1_21.default = true;
+    log_0_4_1.default = true;
+    num_cpus_1_8_0.default = true;
+    rand_0_4_2.default = true;
+    tokio_executor_0_1_2.default = true;
+    tokio_threadpool_0_1_3.default = (f.tokio_threadpool_0_1_3.default or true);
+  }) [ crossbeam_deque_0_3_1_features futures_0_1_21_features log_0_4_1_features num_cpus_1_8_0_features rand_0_4_2_features tokio_executor_0_1_2_features ];
+  tokio_timer_0_2_3 = { features?(tokio_timer_0_2_3_features {}) }: tokio_timer_0_2_3_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 tokio_executor_0_1_2 ]);
+  };
+  tokio_timer_0_2_3_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    tokio_executor_0_1_2.default = true;
+    tokio_timer_0_2_3.default = (f.tokio_timer_0_2_3.default or true);
+  }) [ futures_0_1_21_features tokio_executor_0_1_2_features ];
+  tokio_tls_0_1_4 = { features?(tokio_tls_0_1_4_features {}) }: tokio_tls_0_1_4_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 native_tls_0_1_5 tokio_core_0_1_17 tokio_io_0_1_6 ])
+      ++ (if !(kernel == "darwin") && !(kernel == "windows") && !(kernel == "ios") then mapFeatures features ([]) else [])
+      ++ (if kernel == "darwin" || kernel == "ios" then mapFeatures features ([]) else [])
+      ++ (if kernel == "windows" then mapFeatures features ([]) else []);
+  };
+  tokio_tls_0_1_4_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    native_tls_0_1_5.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_tls_0_1_4.default = (f.tokio_tls_0_1_4.default or true);
+  }) [ futures_0_1_21_features native_tls_0_1_5_features tokio_core_0_1_17_features tokio_io_0_1_6_features ];
+  tokio_udp_0_1_0 = { features?(tokio_udp_0_1_0_features {}) }: tokio_udp_0_1_0_ {
+    dependencies = mapFeatures features ([ bytes_0_4_7 futures_0_1_21 log_0_4_1 mio_0_6_14 tokio_io_0_1_6 tokio_reactor_0_1_1 ]);
+    features = mkFeatures (features.tokio_udp_0_1_0 or {});
+  };
+  tokio_udp_0_1_0_features = f: updateFeatures f (rec {
+    bytes_0_4_7.default = true;
+    futures_0_1_21.default = true;
+    log_0_4_1.default = true;
+    mio_0_6_14.default = true;
+    tokio_io_0_1_6.default = true;
+    tokio_reactor_0_1_1.default = true;
+    tokio_udp_0_1_0."futures2" =
+      (f.tokio_udp_0_1_0."futures2" or false) ||
+      (f.tokio_udp_0_1_0."unstable-futures" or false) ||
+      (tokio_udp_0_1_0."unstable-futures" or false);
+    tokio_udp_0_1_0.default = (f.tokio_udp_0_1_0.default or true);
+  }) [ bytes_0_4_7_features futures_0_1_21_features log_0_4_1_features mio_0_6_14_features tokio_io_0_1_6_features tokio_reactor_0_1_1_features ];
+  trust_dns_proto_0_3_3 = { features?(trust_dns_proto_0_3_3_features {}) }: trust_dns_proto_0_3_3_ {
+    dependencies = mapFeatures features ([ byteorder_1_2_3 error_chain_0_1_12 futures_0_1_21 idna_0_1_4 lazy_static_1_0_0 log_0_4_1 rand_0_4_2 tokio_core_0_1_17 tokio_io_0_1_6 url_1_7_0 ]);
+    features = mkFeatures (features.trust_dns_proto_0_3_3 or {});
+  };
+  trust_dns_proto_0_3_3_features = f: updateFeatures f (rec {
+    byteorder_1_2_3.default = true;
+    error_chain_0_1_12.default = (f.error_chain_0_1_12.default or false);
+    futures_0_1_21.default = true;
+    idna_0_1_4.default = true;
+    lazy_static_1_0_0.default = true;
+    log_0_4_1.default = true;
+    rand_0_4_2.default = true;
+    tokio_core_0_1_17.default = true;
+    tokio_io_0_1_6.default = true;
+    trust_dns_proto_0_3_3."data-encoding" =
+      (f.trust_dns_proto_0_3_3."data-encoding" or false) ||
+      (f.trust_dns_proto_0_3_3.dnssec or false) ||
+      (trust_dns_proto_0_3_3.dnssec or false);
+    trust_dns_proto_0_3_3.default = (f.trust_dns_proto_0_3_3.default or true);
+    trust_dns_proto_0_3_3.dnssec =
+      (f.trust_dns_proto_0_3_3.dnssec or false) ||
+      (f.trust_dns_proto_0_3_3."dnssec-openssl" or false) ||
+      (trust_dns_proto_0_3_3."dnssec-openssl" or false) ||
+      (f.trust_dns_proto_0_3_3."dnssec-ring" or false) ||
+      (trust_dns_proto_0_3_3."dnssec-ring" or false);
+    trust_dns_proto_0_3_3.openssl =
+      (f.trust_dns_proto_0_3_3.openssl or false) ||
+      (f.trust_dns_proto_0_3_3."dnssec-openssl" or false) ||
+      (trust_dns_proto_0_3_3."dnssec-openssl" or false);
+    trust_dns_proto_0_3_3.ring =
+      (f.trust_dns_proto_0_3_3.ring or false) ||
+      (f.trust_dns_proto_0_3_3."dnssec-ring" or false) ||
+      (trust_dns_proto_0_3_3."dnssec-ring" or false);
+    trust_dns_proto_0_3_3.untrusted =
+      (f.trust_dns_proto_0_3_3.untrusted or false) ||
+      (f.trust_dns_proto_0_3_3."dnssec-ring" or false) ||
+      (trust_dns_proto_0_3_3."dnssec-ring" or false);
+    url_1_7_0.default = true;
+  }) [ byteorder_1_2_3_features error_chain_0_1_12_features futures_0_1_21_features idna_0_1_4_features lazy_static_1_0_0_features log_0_4_1_features rand_0_4_2_features tokio_core_0_1_17_features tokio_io_0_1_6_features url_1_7_0_features ];
+  trust_dns_resolver_0_8_2 = { features?(trust_dns_resolver_0_8_2_features {}) }: trust_dns_resolver_0_8_2_ {
+    dependencies = mapFeatures features ([ error_chain_0_1_12 futures_0_1_21 lazy_static_1_0_0 log_0_4_1 lru_cache_0_1_1 resolv_conf_0_6_0 tokio_core_0_1_17 trust_dns_proto_0_3_3 ])
+      ++ (if kernel == "windows" then mapFeatures features ([ ipconfig_0_1_6 ]) else []);
+    features = mkFeatures (features.trust_dns_resolver_0_8_2 or {});
+  };
+  trust_dns_resolver_0_8_2_features = f: updateFeatures f (rec {
+    error_chain_0_1_12.default = (f.error_chain_0_1_12.default or false);
+    futures_0_1_21.default = true;
+    ipconfig_0_1_6.default = true;
+    lazy_static_1_0_0.default = true;
+    log_0_4_1.default = true;
+    lru_cache_0_1_1.default = true;
+    resolv_conf_0_6_0.default = true;
+    resolv_conf_0_6_0.system = true;
+    tokio_core_0_1_17.default = true;
+    trust_dns_proto_0_3_3."dnssec-openssl" =
+      (f.trust_dns_proto_0_3_3."dnssec-openssl" or false) ||
+      (trust_dns_resolver_0_8_2."dnssec-openssl" or false) ||
+      (f.trust_dns_resolver_0_8_2."dnssec-openssl" or false);
+    trust_dns_proto_0_3_3."dnssec-ring" =
+      (f.trust_dns_proto_0_3_3."dnssec-ring" or false) ||
+      (trust_dns_resolver_0_8_2."dnssec-ring" or false) ||
+      (f.trust_dns_resolver_0_8_2."dnssec-ring" or false);
+    trust_dns_proto_0_3_3.default = true;
+    trust_dns_resolver_0_8_2.default = (f.trust_dns_resolver_0_8_2.default or true);
+    trust_dns_resolver_0_8_2.dnssec =
+      (f.trust_dns_resolver_0_8_2.dnssec or false) ||
+      (f.trust_dns_resolver_0_8_2."dnssec-openssl" or false) ||
+      (trust_dns_resolver_0_8_2."dnssec-openssl" or false) ||
+      (f.trust_dns_resolver_0_8_2."dnssec-ring" or false) ||
+      (trust_dns_resolver_0_8_2."dnssec-ring" or false);
+  }) [ error_chain_0_1_12_features futures_0_1_21_features lazy_static_1_0_0_features log_0_4_1_features lru_cache_0_1_1_features resolv_conf_0_6_0_features tokio_core_0_1_17_features trust_dns_proto_0_3_3_features ipconfig_0_1_6_features ];
+  try_lock_0_1_0 = { features?(try_lock_0_1_0_features {}) }: try_lock_0_1_0_ {};
+  try_lock_0_1_0_features = f: updateFeatures f (rec {
+    try_lock_0_1_0.default = (f.try_lock_0_1_0.default or true);
+  }) [];
+  twoway_0_1_8 = { features?(twoway_0_1_8_features {}) }: twoway_0_1_8_ {
+    dependencies = mapFeatures features ([ memchr_2_0_1 ]);
+    features = mkFeatures (features.twoway_0_1_8 or {});
+  };
+  twoway_0_1_8_features = f: updateFeatures f (rec {
+    memchr_2_0_1.default = (f.memchr_2_0_1.default or false);
+    memchr_2_0_1.use_std =
+      (f.memchr_2_0_1.use_std or false) ||
+      (twoway_0_1_8.use_std or false) ||
+      (f.twoway_0_1_8.use_std or false);
+    twoway_0_1_8."galil-seiferas" =
+      (f.twoway_0_1_8."galil-seiferas" or false) ||
+      (f.twoway_0_1_8.benchmarks or false) ||
+      (twoway_0_1_8.benchmarks or false);
+    twoway_0_1_8."test-set" =
+      (f.twoway_0_1_8."test-set" or false) ||
+      (f.twoway_0_1_8.all or false) ||
+      (twoway_0_1_8.all or false);
+    twoway_0_1_8."unchecked-index" =
+      (f.twoway_0_1_8."unchecked-index" or false) ||
+      (f.twoway_0_1_8.benchmarks or false) ||
+      (twoway_0_1_8.benchmarks or false) ||
+      (f.twoway_0_1_8.pcmp or false) ||
+      (twoway_0_1_8.pcmp or false);
+    twoway_0_1_8.default = (f.twoway_0_1_8.default or true);
+    twoway_0_1_8.jetscii =
+      (f.twoway_0_1_8.jetscii or false) ||
+      (f.twoway_0_1_8.all or false) ||
+      (twoway_0_1_8.all or false);
+    twoway_0_1_8.pattern =
+      (f.twoway_0_1_8.pattern or false) ||
+      (f.twoway_0_1_8.all or false) ||
+      (twoway_0_1_8.all or false) ||
+      (f.twoway_0_1_8.benchmarks or false) ||
+      (twoway_0_1_8.benchmarks or false);
+    twoway_0_1_8.pcmp =
+      (f.twoway_0_1_8.pcmp or false) ||
+      (f.twoway_0_1_8.all or false) ||
+      (twoway_0_1_8.all or false);
+    twoway_0_1_8.use_std =
+      (f.twoway_0_1_8.use_std or false) ||
+      (f.twoway_0_1_8.default or false) ||
+      (twoway_0_1_8.default or false);
+  }) [ memchr_2_0_1_features ];
+  typed_arena_1_3_0 = { features?(typed_arena_1_3_0_features {}) }: typed_arena_1_3_0_ {};
+  typed_arena_1_3_0_features = f: updateFeatures f (rec {
+    typed_arena_1_3_0.default = (f.typed_arena_1_3_0.default or true);
+  }) [];
+  ucd_util_0_1_1 = { features?(ucd_util_0_1_1_features {}) }: ucd_util_0_1_1_ {};
+  ucd_util_0_1_1_features = f: updateFeatures f (rec {
+    ucd_util_0_1_1.default = (f.ucd_util_0_1_1.default or true);
+  }) [];
+  unicase_1_4_2 = { features?(unicase_1_4_2_features {}) }: unicase_1_4_2_ {
+    dependencies = mapFeatures features ([]);
+    buildDependencies = mapFeatures features ([ version_check_0_1_3 ]);
+    features = mkFeatures (features.unicase_1_4_2 or {});
+  };
+  unicase_1_4_2_features = f: updateFeatures f (rec {
+    unicase_1_4_2.default = (f.unicase_1_4_2.default or true);
+    unicase_1_4_2.heapsize =
+      (f.unicase_1_4_2.heapsize or false) ||
+      (f.unicase_1_4_2.heap_size or false) ||
+      (unicase_1_4_2.heap_size or false);
+    unicase_1_4_2.heapsize_plugin =
+      (f.unicase_1_4_2.heapsize_plugin or false) ||
+      (f.unicase_1_4_2.heap_size or false) ||
+      (unicase_1_4_2.heap_size or false);
+    version_check_0_1_3.default = true;
+  }) [ version_check_0_1_3_features ];
+  unicase_2_1_0 = { features?(unicase_2_1_0_features {}) }: unicase_2_1_0_ {
+    buildDependencies = mapFeatures features ([ version_check_0_1_3 ]);
+    features = mkFeatures (features.unicase_2_1_0 or {});
+  };
+  unicase_2_1_0_features = f: updateFeatures f (rec {
+    unicase_2_1_0.default = (f.unicase_2_1_0.default or true);
+    version_check_0_1_3.default = true;
+  }) [ version_check_0_1_3_features ];
+  unicode_bidi_0_3_4 = { features?(unicode_bidi_0_3_4_features {}) }: unicode_bidi_0_3_4_ {
+    dependencies = mapFeatures features ([ matches_0_1_6 ]);
+    features = mkFeatures (features.unicode_bidi_0_3_4 or {});
+  };
+  unicode_bidi_0_3_4_features = f: updateFeatures f (rec {
+    matches_0_1_6.default = true;
+    unicode_bidi_0_3_4.default = (f.unicode_bidi_0_3_4.default or true);
+    unicode_bidi_0_3_4.flame =
+      (f.unicode_bidi_0_3_4.flame or false) ||
+      (f.unicode_bidi_0_3_4.flame_it or false) ||
+      (unicode_bidi_0_3_4.flame_it or false);
+    unicode_bidi_0_3_4.flamer =
+      (f.unicode_bidi_0_3_4.flamer or false) ||
+      (f.unicode_bidi_0_3_4.flame_it or false) ||
+      (unicode_bidi_0_3_4.flame_it or false);
+    unicode_bidi_0_3_4.serde =
+      (f.unicode_bidi_0_3_4.serde or false) ||
+      (f.unicode_bidi_0_3_4.with_serde or false) ||
+      (unicode_bidi_0_3_4.with_serde or false);
+  }) [ matches_0_1_6_features ];
+  unicode_normalization_0_1_7 = { features?(unicode_normalization_0_1_7_features {}) }: unicode_normalization_0_1_7_ {};
+  unicode_normalization_0_1_7_features = f: updateFeatures f (rec {
+    unicode_normalization_0_1_7.default = (f.unicode_normalization_0_1_7.default or true);
+  }) [];
+  unicode_width_0_1_5 = { features?(unicode_width_0_1_5_features {}) }: unicode_width_0_1_5_ {
+    features = mkFeatures (features.unicode_width_0_1_5 or {});
+  };
+  unicode_width_0_1_5_features = f: updateFeatures f (rec {
+    unicode_width_0_1_5.default = (f.unicode_width_0_1_5.default or true);
+  }) [];
+  unicode_xid_0_0_4 = { features?(unicode_xid_0_0_4_features {}) }: unicode_xid_0_0_4_ {
+    features = mkFeatures (features.unicode_xid_0_0_4 or {});
+  };
+  unicode_xid_0_0_4_features = f: updateFeatures f (rec {
+    unicode_xid_0_0_4.default = (f.unicode_xid_0_0_4.default or true);
+  }) [];
+  unicode_xid_0_1_0 = { features?(unicode_xid_0_1_0_features {}) }: unicode_xid_0_1_0_ {
+    features = mkFeatures (features.unicode_xid_0_1_0 or {});
+  };
+  unicode_xid_0_1_0_features = f: updateFeatures f (rec {
+    unicode_xid_0_1_0.default = (f.unicode_xid_0_1_0.default or true);
+  }) [];
+  unicode_categories_0_1_1 = { features?(unicode_categories_0_1_1_features {}) }: unicode_categories_0_1_1_ {};
+  unicode_categories_0_1_1_features = f: updateFeatures f (rec {
+    unicode_categories_0_1_1.default = (f.unicode_categories_0_1_1.default or true);
+  }) [];
+  unreachable_1_0_0 = { features?(unreachable_1_0_0_features {}) }: unreachable_1_0_0_ {
+    dependencies = mapFeatures features ([ void_1_0_2 ]);
+  };
+  unreachable_1_0_0_features = f: updateFeatures f (rec {
+    unreachable_1_0_0.default = (f.unreachable_1_0_0.default or true);
+    void_1_0_2.default = (f.void_1_0_2.default or false);
+  }) [ void_1_0_2_features ];
+  untrusted_0_5_1 = { features?(untrusted_0_5_1_features {}) }: untrusted_0_5_1_ {};
+  untrusted_0_5_1_features = f: updateFeatures f (rec {
+    untrusted_0_5_1.default = (f.untrusted_0_5_1.default or true);
+  }) [];
+  url_1_7_0 = { features?(url_1_7_0_features {}) }: url_1_7_0_ {
+    dependencies = mapFeatures features ([ idna_0_1_4 matches_0_1_6 percent_encoding_1_0_1 ]
+      ++ (if features.url_1_7_0.encoding or false then [ encoding_0_2_33 ] else []));
+    features = mkFeatures (features.url_1_7_0 or {});
+  };
+  url_1_7_0_features = f: updateFeatures f (rec {
+    encoding_0_2_33.default = true;
+    idna_0_1_4.default = true;
+    matches_0_1_6.default = true;
+    percent_encoding_1_0_1.default = true;
+    url_1_7_0.default = (f.url_1_7_0.default or true);
+    url_1_7_0.encoding =
+      (f.url_1_7_0.encoding or false) ||
+      (f.url_1_7_0.query_encoding or false) ||
+      (url_1_7_0.query_encoding or false);
+    url_1_7_0.heapsize =
+      (f.url_1_7_0.heapsize or false) ||
+      (f.url_1_7_0.heap_size or false) ||
+      (url_1_7_0.heap_size or false);
+  }) [ encoding_0_2_33_features idna_0_1_4_features matches_0_1_6_features percent_encoding_1_0_1_features ];
+  url_serde_0_2_0 = { features?(url_serde_0_2_0_features {}) }: url_serde_0_2_0_ {
+    dependencies = mapFeatures features ([ serde_1_0_59 url_1_7_0 ]);
+  };
+  url_serde_0_2_0_features = f: updateFeatures f (rec {
+    serde_1_0_59.default = true;
+    url_1_7_0.default = true;
+    url_serde_0_2_0.default = (f.url_serde_0_2_0.default or true);
+  }) [ serde_1_0_59_features url_1_7_0_features ];
+  utf8_ranges_1_0_0 = { features?(utf8_ranges_1_0_0_features {}) }: utf8_ranges_1_0_0_ {};
+  utf8_ranges_1_0_0_features = f: updateFeatures f (rec {
+    utf8_ranges_1_0_0.default = (f.utf8_ranges_1_0_0.default or true);
+  }) [];
+  uuid_0_5_1 = { features?(uuid_0_5_1_features {}) }: uuid_0_5_1_ {
+    dependencies = mapFeatures features ([ ]
+      ++ (if features.uuid_0_5_1.rand or false then [ rand_0_3_22 ] else []));
+    features = mkFeatures (features.uuid_0_5_1 or {});
+  };
+  uuid_0_5_1_features = f: updateFeatures f (rec {
+    rand_0_3_22.default = true;
+    uuid_0_5_1."md5" =
+      (f.uuid_0_5_1."md5" or false) ||
+      (f.uuid_0_5_1."v3" or false) ||
+      (uuid_0_5_1."v3" or false);
+    uuid_0_5_1."sha1" =
+      (f.uuid_0_5_1."sha1" or false) ||
+      (f.uuid_0_5_1."v5" or false) ||
+      (uuid_0_5_1."v5" or false);
+    uuid_0_5_1.default = (f.uuid_0_5_1.default or true);
+    uuid_0_5_1.rand =
+      (f.uuid_0_5_1.rand or false) ||
+      (f.uuid_0_5_1."v1" or false) ||
+      (uuid_0_5_1."v1" or false) ||
+      (f.uuid_0_5_1."v4" or false) ||
+      (uuid_0_5_1."v4" or false);
+  }) [ rand_0_3_22_features ];
+  uuid_0_6_3 = { features?(uuid_0_6_3_features {}) }: uuid_0_6_3_ {
+    dependencies = mapFeatures features ([ cfg_if_0_1_3 ]
+      ++ (if features.uuid_0_6_3.rand or false then [ rand_0_4_2 ] else []));
+    features = mkFeatures (features.uuid_0_6_3 or {});
+  };
+  uuid_0_6_3_features = f: updateFeatures f (rec {
+    cfg_if_0_1_3.default = true;
+    rand_0_4_2.default = true;
+    uuid_0_6_3."md5" =
+      (f.uuid_0_6_3."md5" or false) ||
+      (f.uuid_0_6_3."v3" or false) ||
+      (uuid_0_6_3."v3" or false);
+    uuid_0_6_3."sha1" =
+      (f.uuid_0_6_3."sha1" or false) ||
+      (f.uuid_0_6_3."v5" or false) ||
+      (uuid_0_6_3."v5" or false);
+    uuid_0_6_3."v1" =
+      (f.uuid_0_6_3."v1" or false) ||
+      (f.uuid_0_6_3.playground or false) ||
+      (uuid_0_6_3.playground or false);
+    uuid_0_6_3."v3" =
+      (f.uuid_0_6_3."v3" or false) ||
+      (f.uuid_0_6_3.playground or false) ||
+      (uuid_0_6_3.playground or false);
+    uuid_0_6_3."v4" =
+      (f.uuid_0_6_3."v4" or false) ||
+      (f.uuid_0_6_3.playground or false) ||
+      (uuid_0_6_3.playground or false);
+    uuid_0_6_3."v5" =
+      (f.uuid_0_6_3."v5" or false) ||
+      (f.uuid_0_6_3.playground or false) ||
+      (uuid_0_6_3.playground or false);
+    uuid_0_6_3.default = (f.uuid_0_6_3.default or true);
+    uuid_0_6_3.rand =
+      (f.uuid_0_6_3.rand or false) ||
+      (f.uuid_0_6_3."v3" or false) ||
+      (uuid_0_6_3."v3" or false) ||
+      (f.uuid_0_6_3."v4" or false) ||
+      (uuid_0_6_3."v4" or false) ||
+      (f.uuid_0_6_3."v5" or false) ||
+      (uuid_0_6_3."v5" or false);
+    uuid_0_6_3.serde =
+      (f.uuid_0_6_3.serde or false) ||
+      (f.uuid_0_6_3.playground or false) ||
+      (uuid_0_6_3.playground or false);
+    uuid_0_6_3.std =
+      (f.uuid_0_6_3.std or false) ||
+      (f.uuid_0_6_3.default or false) ||
+      (uuid_0_6_3.default or false) ||
+      (f.uuid_0_6_3.use_std or false) ||
+      (uuid_0_6_3.use_std or false);
+  }) [ cfg_if_0_1_3_features rand_0_4_2_features ];
+  vcpkg_0_2_3 = { features?(vcpkg_0_2_3_features {}) }: vcpkg_0_2_3_ {};
+  vcpkg_0_2_3_features = f: updateFeatures f (rec {
+    vcpkg_0_2_3.default = (f.vcpkg_0_2_3.default or true);
+  }) [];
+  vec_map_0_8_1 = { features?(vec_map_0_8_1_features {}) }: vec_map_0_8_1_ {
+    dependencies = mapFeatures features ([]);
+    features = mkFeatures (features.vec_map_0_8_1 or {});
+  };
+  vec_map_0_8_1_features = f: updateFeatures f (rec {
+    vec_map_0_8_1.default = (f.vec_map_0_8_1.default or true);
+    vec_map_0_8_1.serde =
+      (f.vec_map_0_8_1.serde or false) ||
+      (f.vec_map_0_8_1.eders or false) ||
+      (vec_map_0_8_1.eders or false);
+  }) [];
+  version_check_0_1_3 = { features?(version_check_0_1_3_features {}) }: version_check_0_1_3_ {};
+  version_check_0_1_3_features = f: updateFeatures f (rec {
+    version_check_0_1_3.default = (f.version_check_0_1_3.default or true);
+  }) [];
+  void_1_0_2 = { features?(void_1_0_2_features {}) }: void_1_0_2_ {
+    features = mkFeatures (features.void_1_0_2 or {});
+  };
+  void_1_0_2_features = f: updateFeatures f (rec {
+    void_1_0_2.default = (f.void_1_0_2.default or true);
+    void_1_0_2.std =
+      (f.void_1_0_2.std or false) ||
+      (f.void_1_0_2.default or false) ||
+      (void_1_0_2.default or false);
+  }) [];
+  walkdir_2_1_4 = { features?(walkdir_2_1_4_features {}) }: walkdir_2_1_4_ {
+    dependencies = mapFeatures features ([ same_file_1_0_2 ])
+      ++ (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  walkdir_2_1_4_features = f: updateFeatures f (rec {
+    same_file_1_0_2.default = true;
+    walkdir_2_1_4.default = (f.walkdir_2_1_4.default or true);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.std = true;
+    winapi_0_3_4.winnt = true;
+  }) [ same_file_1_0_2_features winapi_0_3_4_features ];
+  want_0_0_4 = { features?(want_0_0_4_features {}) }: want_0_0_4_ {
+    dependencies = mapFeatures features ([ futures_0_1_21 log_0_4_1 try_lock_0_1_0 ]);
+  };
+  want_0_0_4_features = f: updateFeatures f (rec {
+    futures_0_1_21.default = true;
+    log_0_4_1.default = true;
+    try_lock_0_1_0.default = true;
+    want_0_0_4.default = (f.want_0_0_4.default or true);
+  }) [ futures_0_1_21_features log_0_4_1_features try_lock_0_1_0_features ];
+  widestring_0_2_2 = { features?(widestring_0_2_2_features {}) }: widestring_0_2_2_ {};
+  widestring_0_2_2_features = f: updateFeatures f (rec {
+    widestring_0_2_2.default = (f.widestring_0_2_2.default or true);
+  }) [];
+  winapi_0_2_8 = { features?(winapi_0_2_8_features {}) }: winapi_0_2_8_ {};
+  winapi_0_2_8_features = f: updateFeatures f (rec {
+    winapi_0_2_8.default = (f.winapi_0_2_8.default or true);
+  }) [];
+  winapi_0_3_4 = { features?(winapi_0_3_4_features {}) }: winapi_0_3_4_ {
+    dependencies = (if kernel == "i686-pc-windows-gnu" then mapFeatures features ([ winapi_i686_pc_windows_gnu_0_4_0 ]) else [])
+      ++ (if kernel == "x86_64-pc-windows-gnu" then mapFeatures features ([ winapi_x86_64_pc_windows_gnu_0_4_0 ]) else []);
+    features = mkFeatures (features.winapi_0_3_4 or {});
+  };
+  winapi_0_3_4_features = f: updateFeatures f (rec {
+    winapi_0_3_4.default = (f.winapi_0_3_4.default or true);
+    winapi_i686_pc_windows_gnu_0_4_0.default = true;
+    winapi_x86_64_pc_windows_gnu_0_4_0.default = true;
+  }) [ winapi_i686_pc_windows_gnu_0_4_0_features winapi_x86_64_pc_windows_gnu_0_4_0_features ];
+  winapi_build_0_1_1 = { features?(winapi_build_0_1_1_features {}) }: winapi_build_0_1_1_ {};
+  winapi_build_0_1_1_features = f: updateFeatures f (rec {
+    winapi_build_0_1_1.default = (f.winapi_build_0_1_1.default or true);
+  }) [];
+  winapi_i686_pc_windows_gnu_0_4_0 = { features?(winapi_i686_pc_windows_gnu_0_4_0_features {}) }: winapi_i686_pc_windows_gnu_0_4_0_ {};
+  winapi_i686_pc_windows_gnu_0_4_0_features = f: updateFeatures f (rec {
+    winapi_i686_pc_windows_gnu_0_4_0.default = (f.winapi_i686_pc_windows_gnu_0_4_0.default or true);
+  }) [];
+  winapi_x86_64_pc_windows_gnu_0_4_0 = { features?(winapi_x86_64_pc_windows_gnu_0_4_0_features {}) }: winapi_x86_64_pc_windows_gnu_0_4_0_ {};
+  winapi_x86_64_pc_windows_gnu_0_4_0_features = f: updateFeatures f (rec {
+    winapi_x86_64_pc_windows_gnu_0_4_0.default = (f.winapi_x86_64_pc_windows_gnu_0_4_0.default or true);
+  }) [];
+  wincolor_0_1_6 = { features?(wincolor_0_1_6_features {}) }: wincolor_0_1_6_ {
+    dependencies = mapFeatures features ([ winapi_0_3_4 ]);
+  };
+  wincolor_0_1_6_features = f: updateFeatures f (rec {
+    winapi_0_3_4.consoleapi = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.processenv = true;
+    winapi_0_3_4.winbase = true;
+    winapi_0_3_4.wincon = true;
+    wincolor_0_1_6.default = (f.wincolor_0_1_6.default or true);
+  }) [ winapi_0_3_4_features ];
+  winreg_0_5_0 = { features?(winreg_0_5_0_features {}) }: winreg_0_5_0_ {
+    dependencies = mapFeatures features ([ winapi_0_3_4 ]);
+    features = mkFeatures (features.winreg_0_5_0 or {});
+  };
+  winreg_0_5_0_features = f: updateFeatures f (rec {
+    winapi_0_3_4."ktmw32" =
+      (f.winapi_0_3_4."ktmw32" or false) ||
+      (winreg_0_5_0.transactions or false) ||
+      (f.winreg_0_5_0.transactions or false);
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.handleapi = true;
+    winapi_0_3_4.minwindef = true;
+    winapi_0_3_4.winerror = true;
+    winapi_0_3_4.winnt = true;
+    winapi_0_3_4.winreg = true;
+    winreg_0_5_0.default = (f.winreg_0_5_0.default or true);
+    winreg_0_5_0.serde =
+      (f.winreg_0_5_0.serde or false) ||
+      (f.winreg_0_5_0."serialization-serde" or false) ||
+      (winreg_0_5_0."serialization-serde" or false);
+    winreg_0_5_0.transactions =
+      (f.winreg_0_5_0.transactions or false) ||
+      (f.winreg_0_5_0."serialization-serde" or false) ||
+      (winreg_0_5_0."serialization-serde" or false);
+  }) [ winapi_0_3_4_features ];
+  winutil_0_1_1 = { features?(winutil_0_1_1_features {}) }: winutil_0_1_1_ {
+    dependencies = (if kernel == "windows" then mapFeatures features ([ winapi_0_3_4 ]) else []);
+  };
+  winutil_0_1_1_features = f: updateFeatures f (rec {
+    winapi_0_3_4."wow64apiset" = true;
+    winapi_0_3_4.default = true;
+    winapi_0_3_4.processthreadsapi = true;
+    winapi_0_3_4.winbase = true;
+    winutil_0_1_1.default = (f.winutil_0_1_1.default or true);
+  }) [ winapi_0_3_4_features ];
+  ws2_32_sys_0_2_1 = { features?(ws2_32_sys_0_2_1_features {}) }: ws2_32_sys_0_2_1_ {
+    dependencies = mapFeatures features ([ winapi_0_2_8 ]);
+    buildDependencies = mapFeatures features ([ winapi_build_0_1_1 ]);
+  };
+  ws2_32_sys_0_2_1_features = f: updateFeatures f (rec {
+    winapi_0_2_8.default = true;
+    winapi_build_0_1_1.default = true;
+    ws2_32_sys_0_2_1.default = (f.ws2_32_sys_0_2_1.default or true);
+  }) [ winapi_0_2_8_features winapi_build_0_1_1_features ];
+}
diff --git a/web/converse/Cargo.toml b/web/converse/Cargo.toml
new file mode 100644
index 0000000000..ddba316a9e
--- /dev/null
+++ b/web/converse/Cargo.toml
@@ -0,0 +1,35 @@
+[package]
+name = "converse"
+version = "0.1.0"
+authors = ["Vincent Ambo <mail@tazj.in>"]
+license = "AGPL-3.0-or-later"
+
+[dependencies]
+actix = "0.5"
+actix-web = "0.6"
+askama = "0.6"
+chrono = { version = "0.4", features = ["serde"] }
+comrak = "0.2"
+diesel = { version = "1.2", features = ["postgres", "chrono", "r2d2"]}
+env_logger = "0.5"
+failure = "0.1"
+futures = "0.1"
+hyper = "0.11"
+log = "0.4"
+md5 = "0.3.7"
+mime_guess = "2.0.0-alpha"
+pq-sys = "=0.4.4"
+r2d2 = "0.8"
+rand = "0.4"
+reqwest = "0.8"
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"
+tokio = "0.1"
+tokio-timer = "0.2"
+url = "1.7"
+url_serde = "0.2"
+
+[build-dependencies]
+pulldown-cmark = "0.1"
+askama = "0.6"
diff --git a/web/converse/LICENSE b/web/converse/LICENSE
new file mode 100644
index 0000000000..f288702d2f
--- /dev/null
+++ b/web/converse/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
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+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
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+price.  Our General Public Licenses are designed to make sure that you
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+
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+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
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+
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+authors' sake, the GPL requires that modified versions be marked as
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+
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+modification follow.
+
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+  "This License" refers to version 3 of the GNU General Public License.
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+works, such as semiconductor masks.
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+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
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+propagate the contents of its contributor version.
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+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
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+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/web/converse/README.org b/web/converse/README.org
new file mode 100644
index 0000000000..46df507c32
--- /dev/null
+++ b/web/converse/README.org
@@ -0,0 +1,14 @@
+#+TITLE: Converse
+#+AUTHOR: Vincent Ambo
+
+Welcome to Converse, a work-in-progress forum software written in
+Rust. The intention behind Converse is to provide a simple forum-like
+experience.
+
+There is not a lot of documentation about Converse yet and it has
+several known issues. Also note that Converse is being developed for a
+specific use-case and is not going to be a forum feature kitchen-sink
+like most classical forum softwares.
+
+Better documentation is forthcoming once the remaining basics have
+been taken care of.
diff --git a/web/converse/build.rs b/web/converse/build.rs
new file mode 100644
index 0000000000..89e3e6b1ab
--- /dev/null
+++ b/web/converse/build.rs
@@ -0,0 +1,5 @@
+extern crate askama;
+
+fn main() {
+    askama::rerun_if_templates_changed();
+}
diff --git a/web/converse/default.nix b/web/converse/default.nix
new file mode 100644
index 0000000000..24d24cf035
--- /dev/null
+++ b/web/converse/default.nix
@@ -0,0 +1,18 @@
+# This Nix derivation imports the generated Carnix sources and builds
+# Converse.
+#
+# To work around an issue in Carnix ([1] & [2]) the attributes of the
+# comrak crate have been overridden with a dummy environment variable
+# to simulate a Cargo-based build. This requires a manual change to
+# `Cargo.nix` when updating dependencies.
+#
+# [1]: https://nest.pijul.com/pmeunier/carnix/discussions/2
+# [2]: https://nest.pijul.com/pmeunier/carnix/discussions/3
+
+{ pkgs ? import <nixpkgs> {}, ... }:
+
+let cargo = pkgs.callPackage ./Cargo.nix {};
+in {
+  # Build is not yet fixed up for the depot.
+  meta.ci = false;
+}
diff --git a/web/converse/envrc.example b/web/converse/envrc.example
new file mode 100644
index 0000000000..f255d269fe
--- /dev/null
+++ b/web/converse/envrc.example
@@ -0,0 +1,14 @@
+# This is an example configuration for running converse during
+# development using direnv:
+# https://github.com/direnv/direnv
+#
+# The OIDC actor is configured with bogus values as disabling logins
+# never causes it to run anyways.
+
+export DATABASE_URL=postgres://converse:converse@localhost/converse
+export RUST_LOG=info
+export OIDC_DISCOVERY_URL=https://does.not.matter.com/
+export OIDC_CLIENT_ID=some-client-id
+export OIDC_CLIENT_SECRET='some-client-secret'
+export BASE_URL=http://localhost:4567
+export REQUIRE_LOGIN=false
diff --git a/web/converse/migrations/.gitkeep b/web/converse/migrations/.gitkeep
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/web/converse/migrations/.gitkeep
diff --git a/web/converse/migrations/00000000000000_diesel_initial_setup/down.sql b/web/converse/migrations/00000000000000_diesel_initial_setup/down.sql
new file mode 100644
index 0000000000..a9f5260911
--- /dev/null
+++ b/web/converse/migrations/00000000000000_diesel_initial_setup/down.sql
@@ -0,0 +1,6 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
+DROP FUNCTION IF EXISTS diesel_set_updated_at();
diff --git a/web/converse/migrations/00000000000000_diesel_initial_setup/up.sql b/web/converse/migrations/00000000000000_diesel_initial_setup/up.sql
new file mode 100644
index 0000000000..d68895b1a7
--- /dev/null
+++ b/web/converse/migrations/00000000000000_diesel_initial_setup/up.sql
@@ -0,0 +1,36 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+
+
+
+-- Sets up a trigger for the given table to automatically set a column called
+-- `updated_at` whenever the row is modified (unless `updated_at` was included
+-- in the modified columns)
+--
+-- # Example
+--
+-- ```sql
+-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
+--
+-- SELECT diesel_manage_updated_at('users');
+-- ```
+CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
+BEGIN
+    EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
+                    FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
+BEGIN
+    IF (
+        NEW IS DISTINCT FROM OLD AND
+        NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
+    ) THEN
+        NEW.updated_at := current_timestamp;
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
diff --git a/web/converse/migrations/2018-04-08-133240_create_posts/down.sql b/web/converse/migrations/2018-04-08-133240_create_posts/down.sql
new file mode 100644
index 0000000000..8ebcef8e13
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-133240_create_posts/down.sql
@@ -0,0 +1,2 @@
+DROP TABLE posts;
+DROP TABLE threads;
diff --git a/web/converse/migrations/2018-04-08-133240_create_posts/up.sql b/web/converse/migrations/2018-04-08-133240_create_posts/up.sql
new file mode 100644
index 0000000000..7cf601fa2c
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-133240_create_posts/up.sql
@@ -0,0 +1,13 @@
+CREATE TABLE threads (
+  id SERIAL PRIMARY KEY,
+  title VARCHAR NOT NULL,
+  body TEXT NOT NULL,
+  posted TIMESTAMPTZ NOT NULL
+);
+
+CREATE TABLE posts (
+  id SERIAL PRIMARY KEY,
+  thread SERIAL REFERENCES threads (id),
+  body TEXT NOT NULL,
+  posted TIMESTAMPTZ NOT NULL
+);
diff --git a/web/converse/migrations/2018-04-08-161017_joinable_posts/down.sql b/web/converse/migrations/2018-04-08-161017_joinable_posts/down.sql
new file mode 100644
index 0000000000..cc7874b410
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-161017_joinable_posts/down.sql
@@ -0,0 +1 @@
+ALTER TABLE posts RENAME COLUMN thread_id TO thread;
diff --git a/web/converse/migrations/2018-04-08-161017_joinable_posts/up.sql b/web/converse/migrations/2018-04-08-161017_joinable_posts/up.sql
new file mode 100644
index 0000000000..9713de6cfc
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-161017_joinable_posts/up.sql
@@ -0,0 +1 @@
+ALTER TABLE posts RENAME COLUMN thread TO thread_id;
diff --git a/web/converse/migrations/2018-04-08-172739_default_posted/down.sql b/web/converse/migrations/2018-04-08-172739_default_posted/down.sql
new file mode 100644
index 0000000000..64dc07e066
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-172739_default_posted/down.sql
@@ -0,0 +1,2 @@
+ALTER TABLE threads ALTER COLUMN posted DROP DEFAULT;
+ALTER TABLE posts ALTER COLUMN posted DROP DEFAULT;
diff --git a/web/converse/migrations/2018-04-08-172739_default_posted/up.sql b/web/converse/migrations/2018-04-08-172739_default_posted/up.sql
new file mode 100644
index 0000000000..afca8181cc
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-172739_default_posted/up.sql
@@ -0,0 +1,2 @@
+ALTER TABLE threads ALTER COLUMN posted SET DEFAULT (NOW() AT TIME ZONE 'UTC');
+ALTER TABLE posts ALTER COLUMN posted SET DEFAULT (NOW() AT TIME ZONE 'UTC');
diff --git a/web/converse/migrations/2018-04-08-182319_add_authors/down.sql b/web/converse/migrations/2018-04-08-182319_add_authors/down.sql
new file mode 100644
index 0000000000..8ad8179080
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-182319_add_authors/down.sql
@@ -0,0 +1,5 @@
+ALTER TABLE threads DROP COLUMN author_name;
+ALTER TABLE threads DROP COLUMN author_email;
+
+ALTER TABLE posts DROP COLUMN author_name;
+ALTER TABLE posts DROP COLUMN author_email;
diff --git a/web/converse/migrations/2018-04-08-182319_add_authors/up.sql b/web/converse/migrations/2018-04-08-182319_add_authors/up.sql
new file mode 100644
index 0000000000..ad5beb9f67
--- /dev/null
+++ b/web/converse/migrations/2018-04-08-182319_add_authors/up.sql
@@ -0,0 +1,10 @@
+-- This migration adds an 'author' column to the thread & post table.
+-- Authors don't currently exist as independent objects in the
+-- database as most user management is simply delegated to the OIDC
+-- provider.
+
+ALTER TABLE threads ADD COLUMN author_name VARCHAR NOT NULL DEFAULT 'anonymous';
+ALTER TABLE threads ADD COLUMN author_email VARCHAR NOT NULL DEFAULT 'unknown@example.org';
+
+ALTER TABLE posts ADD COLUMN author_name VARCHAR NOT NULL DEFAULT 'anonymous';
+ALTER TABLE posts ADD COLUMN author_email VARCHAR NOT NULL DEFAULT 'unknown@example.org';
diff --git a/web/converse/migrations/2018-04-14-140818_posts_only_in_posts/down.sql b/web/converse/migrations/2018-04-14-140818_posts_only_in_posts/down.sql
new file mode 100644
index 0000000000..bb6528f33d
--- /dev/null
+++ b/web/converse/migrations/2018-04-14-140818_posts_only_in_posts/down.sql
@@ -0,0 +1 @@
+ALTER TABLE threads ADD COLUMN body TEXT NOT NULL DEFAULT '';
diff --git a/web/converse/migrations/2018-04-14-140818_posts_only_in_posts/up.sql b/web/converse/migrations/2018-04-14-140818_posts_only_in_posts/up.sql
new file mode 100644
index 0000000000..07ff9a1196
--- /dev/null
+++ b/web/converse/migrations/2018-04-14-140818_posts_only_in_posts/up.sql
@@ -0,0 +1,6 @@
+-- Instead of storing the thread OP in the thread table, this will
+-- make it a post as well.
+-- At the time at which this migration was created no important data
+-- existed in any converse instances, so data is not moved.
+
+ALTER TABLE threads DROP COLUMN body;
diff --git a/web/converse/migrations/2018-04-14-153202_add_stickies_improve_index/down.sql b/web/converse/migrations/2018-04-14-153202_add_stickies_improve_index/down.sql
new file mode 100644
index 0000000000..a67ada3d4a
--- /dev/null
+++ b/web/converse/migrations/2018-04-14-153202_add_stickies_improve_index/down.sql
@@ -0,0 +1,2 @@
+DROP VIEW thread_index;
+ALTER TABLE threads DROP COLUMN sticky;
diff --git a/web/converse/migrations/2018-04-14-153202_add_stickies_improve_index/up.sql b/web/converse/migrations/2018-04-14-153202_add_stickies_improve_index/up.sql
new file mode 100644
index 0000000000..74a559e35d
--- /dev/null
+++ b/web/converse/migrations/2018-04-14-153202_add_stickies_improve_index/up.sql
@@ -0,0 +1,21 @@
+-- Add support for stickies in threads
+ALTER TABLE threads ADD COLUMN sticky BOOLEAN NOT NULL DEFAULT FALSE;
+
+-- CREATE a simple view that returns the list of threads ordered by
+-- the last post that occured in the thread.
+CREATE VIEW thread_index AS
+  SELECT t.id AS thread_id,
+         t.title AS title,
+         t.author_name AS thread_author,
+         t.posted AS created,
+         t.sticky AS sticky,
+         p.id AS post_id,
+         p.author_name AS post_author,
+         p.posted AS posted
+    FROM threads t
+    JOIN (SELECT DISTINCT ON (thread_id)
+           id, thread_id, author_name, posted
+          FROM posts
+          ORDER BY thread_id, id DESC) AS p
+    ON t.id = p.thread_id
+    ORDER BY t.sticky DESC, p.id DESC;
diff --git a/web/converse/migrations/2018-04-14-170750_search-index/down.sql b/web/converse/migrations/2018-04-14-170750_search-index/down.sql
new file mode 100644
index 0000000000..c57e662902
--- /dev/null
+++ b/web/converse/migrations/2018-04-14-170750_search-index/down.sql
@@ -0,0 +1,2 @@
+DROP INDEX idx_fts_search;
+DROP MATERIALIZED VIEW search_index;
diff --git a/web/converse/migrations/2018-04-14-170750_search-index/up.sql b/web/converse/migrations/2018-04-14-170750_search-index/up.sql
new file mode 100644
index 0000000000..6b7d90eca6
--- /dev/null
+++ b/web/converse/migrations/2018-04-14-170750_search-index/up.sql
@@ -0,0 +1,21 @@
+-- Prepare a materialised view containing the tsvector data for all
+-- threads and posts. This view is indexed using a GIN-index to enable
+-- performant full-text searches.
+--
+-- For now the query language is hardcoded to be English.
+
+CREATE MATERIALIZED VIEW search_index AS
+  SELECT p.id AS post_id,
+         p.author_name AS author,
+         t.id AS thread_id,
+         t.title AS title,
+         p.body AS body,
+         setweight(to_tsvector('english', t.title), 'B') ||
+         setweight(to_tsvector('english', p.body), 'A') ||
+         setweight(to_tsvector('simple', t.author_name), 'C') ||
+         setweight(to_tsvector('simple', p.author_name), 'C') AS document
+    FROM posts p
+    JOIN threads t
+    ON t.id = p.thread_id;
+
+CREATE INDEX idx_fts_search ON search_index USING gin(document);
diff --git a/web/converse/migrations/2018-05-01-141548_add-users/down.sql b/web/converse/migrations/2018-05-01-141548_add-users/down.sql
new file mode 100644
index 0000000000..61fd222e18
--- /dev/null
+++ b/web/converse/migrations/2018-05-01-141548_add-users/down.sql
@@ -0,0 +1,63 @@
+-- First restore the old columns:
+ALTER TABLE threads ADD COLUMN author_name VARCHAR;
+ALTER TABLE threads ADD COLUMN author_email VARCHAR;
+ALTER TABLE posts ADD COLUMN author_name VARCHAR;
+ALTER TABLE posts ADD COLUMN author_email VARCHAR;
+
+-- Then select the data back into them:
+UPDATE threads SET author_name = users.name,
+                   author_email = users.email
+  FROM users
+  WHERE threads.user_id = users.id;
+
+UPDATE posts SET author_name = users.name,
+                 author_email = users.email
+  FROM users
+  WHERE posts.user_id = users.id;
+
+-- add the constraints back:
+ALTER TABLE threads ALTER COLUMN author_name SET NOT NULL;
+ALTER TABLE threads ALTER COLUMN author_email SET NOT NULL;
+ALTER TABLE posts ALTER COLUMN author_name SET NOT NULL;
+ALTER TABLE posts ALTER COLUMN author_email SET NOT NULL;
+
+-- reset the index view:
+CREATE OR REPLACE VIEW thread_index AS
+  SELECT t.id AS thread_id,
+         t.title AS title,
+         t.author_name AS thread_author,
+         t.posted AS created,
+         t.sticky AS sticky,
+         p.id AS post_id,
+         p.author_name AS post_author,
+         p.posted AS posted
+    FROM threads t
+    JOIN (SELECT DISTINCT ON (thread_id)
+           id, thread_id, author_name, posted
+          FROM posts
+          ORDER BY thread_id, id DESC) AS p
+    ON t.id = p.thread_id
+    ORDER BY t.sticky DESC, p.id DESC;
+
+-- reset the search view:
+DROP MATERIALIZED VIEW search_index;
+CREATE MATERIALIZED VIEW search_index AS
+  SELECT p.id AS post_id,
+         p.author_name AS author,
+         t.id AS thread_id,
+         t.title AS title,
+         p.body AS body,
+         setweight(to_tsvector('english', t.title), 'B') ||
+         setweight(to_tsvector('english', p.body), 'A') ||
+         setweight(to_tsvector('simple', t.author_name), 'C') ||
+         setweight(to_tsvector('simple', p.author_name), 'C') AS document
+    FROM posts p
+    JOIN threads t
+    ON t.id = p.thread_id;
+
+CREATE INDEX idx_fts_search ON search_index USING gin(document);
+
+-- and drop the users table and columns:
+ALTER TABLE posts DROP COLUMN user_id;
+ALTER TABLE threads DROP COLUMN user_id;
+DROP TABLE users;
diff --git a/web/converse/migrations/2018-05-01-141548_add-users/up.sql b/web/converse/migrations/2018-05-01-141548_add-users/up.sql
new file mode 100644
index 0000000000..fcb7133e8e
--- /dev/null
+++ b/web/converse/migrations/2018-05-01-141548_add-users/up.sql
@@ -0,0 +1,83 @@
+-- This query creates a users table and migrates the existing user
+-- information (from the posts table) into it.
+
+CREATE TABLE users (
+  id SERIAL PRIMARY KEY,
+  email VARCHAR NOT NULL UNIQUE,
+  name VARCHAR NOT NULL,
+  admin BOOLEAN NOT NULL DEFAULT false
+);
+
+-- Insert the 'anonymous' user explicitly:
+INSERT INTO users (name, email)
+  VALUES ('Anonymous', 'anonymous@nothing.org');
+
+INSERT INTO users (id, email, name)
+  SELECT nextval('users_id_seq'),
+         author_email AS email,
+         author_name AS name
+  FROM posts
+  WHERE author_email != 'anonymous@nothing.org'
+  GROUP BY name, email;
+
+-- Create the 'user_id' column in the relevant tables (initially
+-- without a not-null constraint) and populate it with the data
+-- selected above:
+ALTER TABLE posts ADD COLUMN user_id INTEGER REFERENCES users (id);
+UPDATE posts SET user_id = users.id
+  FROM users
+  WHERE users.email = posts.author_email;
+
+ALTER TABLE threads ADD COLUMN user_id INTEGER REFERENCES users (id);
+UPDATE threads SET user_id = users.id
+  FROM users
+  WHERE users.email = threads.author_email;
+
+-- Add the constraints:
+ALTER TABLE posts ALTER COLUMN user_id SET NOT NULL;
+ALTER TABLE threads ALTER COLUMN user_id SET NOT NULL;
+
+-- Update the index view:
+CREATE OR REPLACE VIEW thread_index AS
+  SELECT t.id AS thread_id,
+         t.title AS title,
+         ta.name AS thread_author,
+         t.posted AS created,
+         t.sticky AS sticky,
+         p.id AS post_id,
+         pa.name AS post_author,
+         p.posted AS posted
+    FROM threads t
+    JOIN (SELECT DISTINCT ON (thread_id)
+           id, thread_id, user_id, posted
+          FROM posts
+          ORDER BY thread_id, id DESC) AS p
+    ON t.id = p.thread_id
+    JOIN users ta ON ta.id = t.user_id
+    JOIN users pa ON pa.id = p.user_id
+    ORDER BY t.sticky DESC, p.id DESC;
+
+-- Update the search view:
+DROP MATERIALIZED VIEW search_index;
+CREATE MATERIALIZED VIEW search_index AS
+  SELECT p.id AS post_id,
+         pa.name AS author,
+         t.id AS thread_id,
+         t.title AS title,
+         p.body AS body,
+         setweight(to_tsvector('english', t.title), 'B') ||
+         setweight(to_tsvector('english', p.body), 'A') ||
+         setweight(to_tsvector('simple', ta.name), 'C') ||
+         setweight(to_tsvector('simple', pa.name), 'C') AS document
+    FROM posts p
+    JOIN threads t ON t.id = p.thread_id
+    JOIN users ta ON ta.id = t.user_id
+    JOIN users pa ON pa.id = p.user_id;
+
+CREATE INDEX idx_fts_search ON search_index USING gin(document);
+
+-- And drop the old fields:
+ALTER TABLE posts DROP COLUMN author_name;
+ALTER TABLE posts DROP COLUMN author_email;
+ALTER TABLE threads DROP COLUMN author_name;
+ALTER TABLE threads DROP COLUMN author_email;
diff --git a/web/converse/migrations/2018-05-01-183232_simplified-post-view/down.sql b/web/converse/migrations/2018-05-01-183232_simplified-post-view/down.sql
new file mode 100644
index 0000000000..0f14732f38
--- /dev/null
+++ b/web/converse/migrations/2018-05-01-183232_simplified-post-view/down.sql
@@ -0,0 +1 @@
+DROP VIEW simple_posts;
diff --git a/web/converse/migrations/2018-05-01-183232_simplified-post-view/up.sql b/web/converse/migrations/2018-05-01-183232_simplified-post-view/up.sql
new file mode 100644
index 0000000000..280fef8700
--- /dev/null
+++ b/web/converse/migrations/2018-05-01-183232_simplified-post-view/up.sql
@@ -0,0 +1,11 @@
+-- Creates a view for listing posts akin to the post table before
+-- splitting out users. This exists to avoid having to do joining
+-- logic and such inside of the application.
+
+CREATE VIEW simple_posts AS
+  SELECT p.id AS id,
+         thread_id, body, posted, user_id,
+         users.name AS author_name,
+         users.email AS author_email
+  FROM posts p
+  JOIN users ON users.id = p.user_id;
diff --git a/web/converse/migrations/2018-05-25-160648_add_closed_column/down.sql b/web/converse/migrations/2018-05-25-160648_add_closed_column/down.sql
new file mode 100644
index 0000000000..fb2a98c0af
--- /dev/null
+++ b/web/converse/migrations/2018-05-25-160648_add_closed_column/down.sql
@@ -0,0 +1 @@
+ALTER TABLE threads DROP COLUMN closed;
diff --git a/web/converse/migrations/2018-05-25-160648_add_closed_column/up.sql b/web/converse/migrations/2018-05-25-160648_add_closed_column/up.sql
new file mode 100644
index 0000000000..d7d4c44da2
--- /dev/null
+++ b/web/converse/migrations/2018-05-25-160648_add_closed_column/up.sql
@@ -0,0 +1 @@
+ALTER TABLE threads ADD COLUMN closed BOOLEAN NOT NULL DEFAULT false;
diff --git a/web/converse/migrations/2018-05-25-161939_add_closed_to_index/down.sql b/web/converse/migrations/2018-05-25-161939_add_closed_to_index/down.sql
new file mode 100644
index 0000000000..1063fdc882
--- /dev/null
+++ b/web/converse/migrations/2018-05-25-161939_add_closed_to_index/down.sql
@@ -0,0 +1,30 @@
+-- Update the index view:
+DROP VIEW thread_index;
+CREATE VIEW thread_index AS
+  SELECT t.id AS thread_id,
+         t.title AS title,
+         ta.name AS thread_author,
+         t.posted AS created,
+         t.sticky AS sticky,
+         p.id AS post_id,
+         pa.name AS post_author,
+         p.posted AS posted
+    FROM threads t
+    JOIN (SELECT DISTINCT ON (thread_id)
+           id, thread_id, user_id, posted
+          FROM posts
+          ORDER BY thread_id, id DESC) AS p
+    ON t.id = p.thread_id
+    JOIN users ta ON ta.id = t.user_id
+    JOIN users pa ON pa.id = p.user_id
+    ORDER BY t.sticky DESC, p.id DESC;
+
+-- Update the post view:
+DROP VIEW simple_posts;
+CREATE VIEW simple_posts AS
+  SELECT p.id AS id,
+         thread_id, body, posted, user_id,
+         users.name AS author_name,
+         users.email AS author_email
+  FROM posts p
+  JOIN users ON users.id = p.user_id;
diff --git a/web/converse/migrations/2018-05-25-161939_add_closed_to_index/up.sql b/web/converse/migrations/2018-05-25-161939_add_closed_to_index/up.sql
new file mode 100644
index 0000000000..87580a2f3f
--- /dev/null
+++ b/web/converse/migrations/2018-05-25-161939_add_closed_to_index/up.sql
@@ -0,0 +1,35 @@
+-- Update the index view:
+DROP VIEW thread_index;
+CREATE VIEW thread_index AS
+  SELECT t.id AS thread_id,
+         t.title AS title,
+         ta.name AS thread_author,
+         t.posted AS created,
+         t.sticky AS sticky,
+         t.closed AS closed,
+         p.id AS post_id,
+         pa.name AS post_author,
+         p.posted AS posted
+    FROM threads t
+    JOIN (SELECT DISTINCT ON (thread_id)
+           id, thread_id, user_id, posted
+          FROM posts
+          ORDER BY thread_id, id DESC) AS p
+    ON t.id = p.thread_id
+    JOIN users ta ON ta.id = t.user_id
+    JOIN users pa ON pa.id = p.user_id
+    ORDER BY t.sticky DESC, p.id DESC;
+
+-- Update post view:
+DROP VIEW simple_posts;
+CREATE VIEW simple_posts AS
+  SELECT p.id AS id,
+         thread_id, body,
+         p.posted AS posted,
+         p.user_id AS user_id,
+         threads.closed AS closed,
+         users.name AS author_name,
+         users.email AS author_email
+  FROM posts p
+  JOIN users ON users.id = p.user_id
+  JOIN threads ON threads.id = p.thread_id;
diff --git a/web/converse/src/db.rs b/web/converse/src/db.rs
new file mode 100644
index 0000000000..e203499444
--- /dev/null
+++ b/web/converse/src/db.rs
@@ -0,0 +1,282 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+//! This module implements the database connection actor.
+
+use actix::prelude::*;
+use diesel::{self, sql_query};
+use diesel::sql_types::Text;
+use diesel::prelude::*;
+use diesel::r2d2::{Pool, ConnectionManager};
+use models::*;
+use errors::{ConverseError, Result};
+
+/// The DB actor itself. Several of these will be run in parallel by
+/// `SyncArbiter`.
+pub struct DbExecutor(pub Pool<ConnectionManager<PgConnection>>);
+
+impl Actor for DbExecutor {
+    type Context = SyncContext<Self>;
+}
+
+/// Message used to request a list of threads.
+/// TODO: This should support page numbers.
+pub struct ListThreads;
+message!(ListThreads, Result<Vec<ThreadIndex>>);
+
+impl Handler<ListThreads> for DbExecutor {
+    type Result = <ListThreads as Message>::Result;
+
+    fn handle(&mut self, _: ListThreads, _: &mut Self::Context) -> Self::Result {
+        use schema::thread_index::dsl::*;
+
+        let conn = self.0.get()?;
+        let results = thread_index
+            .load::<ThreadIndex>(&conn)?;
+        Ok(results)
+    }
+}
+
+/// Message used to look up a user based on their email-address. If
+/// the user does not exist, it is created.
+pub struct LookupOrCreateUser {
+    pub email: String,
+    pub name: String,
+}
+
+message!(LookupOrCreateUser, Result<User>);
+
+impl Handler<LookupOrCreateUser> for DbExecutor {
+    type Result = <LookupOrCreateUser as Message>::Result;
+
+    fn handle(&mut self,
+              msg: LookupOrCreateUser,
+              _: &mut Self::Context) -> Self::Result {
+        use schema::users;
+        use schema::users::dsl::*;
+
+        let conn = self.0.get()?;
+
+        let opt_user = users
+            .filter(email.eq(&msg.email))
+            .first(&conn).optional()?;
+
+        if let Some(user) = opt_user {
+            Ok(user)
+        } else {
+            let new_user = NewUser {
+                email: msg.email,
+                name: msg.name,
+            };
+
+            let user: User = diesel::insert_into(users::table)
+                .values(&new_user)
+                .get_result(&conn)?;
+
+            info!("Created new user {} with ID {}", new_user.email, user.id);
+
+            Ok(user)
+        }
+    }
+}
+
+/// Message used to fetch a specific thread. Returns the thread and
+/// its posts.
+pub struct GetThread(pub i32);
+message!(GetThread, Result<(Thread, Vec<SimplePost>)>);
+
+impl Handler<GetThread> for DbExecutor {
+    type Result = <GetThread as Message>::Result;
+
+    fn handle(&mut self, msg: GetThread, _: &mut Self::Context) -> Self::Result {
+        use schema::threads::dsl::*;
+        use schema::simple_posts::dsl::id;
+
+        let conn = self.0.get()?;
+        let thread_result: Thread = threads
+            .find(msg.0).first(&conn)?;
+
+        let post_list = SimplePost::belonging_to(&thread_result)
+            .order_by(id.asc())
+            .load::<SimplePost>(&conn)?;
+
+        Ok((thread_result, post_list))
+    }
+}
+
+/// Message used to fetch a specific post.
+#[derive(Deserialize, Debug)]
+pub struct GetPost { pub id: i32 }
+
+message!(GetPost, Result<SimplePost>);
+
+impl Handler<GetPost> for DbExecutor {
+    type Result = <GetPost as Message>::Result;
+
+    fn handle(&mut self, msg: GetPost, _: &mut Self::Context) -> Self::Result {
+        use schema::simple_posts::dsl::*;
+        let conn = self.0.get()?;
+        Ok(simple_posts.find(msg.id).first(&conn)?)
+    }
+}
+
+/// Message used to update the content of a post.
+#[derive(Deserialize)]
+pub struct UpdatePost {
+    pub post_id: i32,
+    pub post: String,
+}
+
+message!(UpdatePost, Result<Post>);
+
+impl Handler<UpdatePost> for DbExecutor {
+    type Result = Result<Post>;
+
+    fn handle(&mut self, msg: UpdatePost, _: &mut Self::Context) -> Self::Result {
+        use schema::posts::dsl::*;
+        let conn = self.0.get()?;
+        let updated = diesel::update(posts.find(msg.post_id))
+            .set(body.eq(msg.post))
+            .get_result(&conn)?;
+
+        Ok(updated)
+    }
+}
+
+/// Message used to create a new thread
+pub struct CreateThread {
+    pub new_thread: NewThread,
+    pub post: String,
+}
+message!(CreateThread, Result<Thread>);
+
+impl Handler<CreateThread> for DbExecutor {
+    type Result = <CreateThread as Message>::Result;
+
+    fn handle(&mut self, msg: CreateThread, _: &mut Self::Context) -> Self::Result {
+        use schema::threads;
+        use schema::posts;
+
+        let conn = self.0.get()?;
+
+        conn.transaction::<Thread, ConverseError, _>(|| {
+            // First insert the thread structure itself
+            let thread: Thread = diesel::insert_into(threads::table)
+                .values(&msg.new_thread)
+                .get_result(&conn)?;
+
+            // ... then create the first post in the thread.
+            let new_post = NewPost {
+                thread_id: thread.id,
+                body: msg.post,
+                user_id: msg.new_thread.user_id,
+            };
+
+            diesel::insert_into(posts::table)
+                .values(&new_post)
+                .execute(&conn)?;
+
+            Ok(thread)
+        })
+    }
+}
+
+/// Message used to create a new reply
+pub struct CreatePost(pub NewPost);
+message!(CreatePost, Result<Post>);
+
+impl Handler<CreatePost> for DbExecutor {
+    type Result = <CreatePost as Message>::Result;
+
+    fn handle(&mut self, msg: CreatePost, _: &mut Self::Context) -> Self::Result {
+        use schema::posts;
+
+        let conn = self.0.get()?;
+
+        let closed: bool = {
+            use schema::threads::dsl::*;
+            threads.select(closed)
+                .find(msg.0.thread_id)
+                .first(&conn)?
+        };
+
+        if closed {
+            return Err(ConverseError::ThreadClosed {
+                id: msg.0.thread_id
+            })
+        }
+
+        Ok(diesel::insert_into(posts::table)
+           .values(&msg.0)
+           .get_result(&conn)?)
+    }
+}
+
+/// Message used to search for posts
+#[derive(Deserialize)]
+pub struct SearchPosts { pub query: String }
+message!(SearchPosts, Result<Vec<SearchResult>>);
+
+/// Raw PostgreSQL query used to perform full-text search on posts
+/// with a supplied phrase. For now, the query language is hardcoded
+/// to English and only "plain" queries (i.e. no searches for exact
+/// matches or more advanced query syntax) are supported.
+const SEARCH_QUERY: &'static str = r#"
+WITH search_query (query) AS (VALUES (plainto_tsquery('english', $1)))
+SELECT post_id,
+       thread_id,
+       author,
+       title,
+       ts_headline('english', body, query) AS headline
+  FROM search_index, search_query
+  WHERE document @@ query
+  ORDER BY ts_rank(document, query) DESC
+  LIMIT 50
+"#;
+
+impl Handler<SearchPosts> for DbExecutor {
+    type Result = <SearchPosts as Message>::Result;
+
+    fn handle(&mut self, msg: SearchPosts, _: &mut Self::Context) -> Self::Result {
+        let conn = self.0.get()?;
+
+        let search_results = sql_query(SEARCH_QUERY)
+            .bind::<Text, _>(msg.query)
+            .get_results::<SearchResult>(&conn)?;
+
+        Ok(search_results)
+    }
+}
+
+/// Message that triggers a refresh of the view used for full-text
+/// searching.
+pub struct RefreshSearchView;
+message!(RefreshSearchView, Result<()>);
+
+const REFRESH_QUERY: &'static str = "REFRESH MATERIALIZED VIEW search_index";
+
+impl Handler<RefreshSearchView> for DbExecutor {
+    type Result = Result<()>;
+
+    fn handle(&mut self, _: RefreshSearchView, _: &mut Self::Context) -> Self::Result {
+        let conn = self.0.get()?;
+        debug!("Refreshing search_index view in DB");
+        sql_query(REFRESH_QUERY).execute(&conn)?;
+        Ok(())
+    }
+}
diff --git a/web/converse/src/errors.rs b/web/converse/src/errors.rs
new file mode 100644
index 0000000000..95b2366ce5
--- /dev/null
+++ b/web/converse/src/errors.rs
@@ -0,0 +1,133 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+//! This module defines custom error types using the `failure`-crate.
+//! Links to foreign error types (such as database connection errors)
+//! are established in a similar way as was tradition in
+//! `error_chain`, albeit manually.
+
+use std::result;
+use actix_web::{ResponseError, HttpResponse};
+use actix_web::http::StatusCode;
+
+// Modules with foreign errors:
+use actix;
+use actix_web;
+use askama;
+use diesel;
+use r2d2;
+use reqwest;
+use tokio_timer;
+
+pub type Result<T> = result::Result<T, ConverseError>;
+
+#[derive(Debug, Fail)]
+pub enum ConverseError {
+    #[fail(display = "an internal Converse error occured: {}", reason)]
+    InternalError { reason: String },
+
+    #[fail(display = "a database error occured: {}", error)]
+    Database { error: diesel::result::Error },
+
+    #[fail(display = "a database connection pool error occured: {}", error)]
+    ConnectionPool { error: r2d2::Error },
+
+    #[fail(display = "a template rendering error occured: {}", reason)]
+    Template { reason: String },
+
+    #[fail(display = "error occured during request handling: {}", error)]
+    ActixWeb { error: actix_web::Error },
+
+    #[fail(display = "error occured running timer: {}", error)]
+    Timer { error: tokio_timer::Error },
+
+    #[fail(display = "user {} does not have permission to edit post {}", user, id)]
+    PostEditForbidden { user: i32, id: i32 },
+
+    #[fail(display = "thread {} is closed and can not be responded to", id)]
+    ThreadClosed { id: i32 },
+
+    // This variant is used as a catch-all for wrapping
+    // actix-web-compatible response errors, such as the errors it
+    // throws itself.
+    #[fail(display = "Actix response error: {}", error)]
+    Actix { error: Box<ResponseError> },
+}
+
+// Establish conversion links to foreign errors:
+
+impl From<diesel::result::Error> for ConverseError {
+    fn from(error: diesel::result::Error) -> ConverseError {
+        ConverseError::Database { error }
+    }
+}
+
+impl From<r2d2::Error> for ConverseError {
+    fn from(error: r2d2::Error) -> ConverseError {
+        ConverseError::ConnectionPool { error }
+    }
+}
+
+impl From<askama::Error> for ConverseError {
+    fn from(error: askama::Error) -> ConverseError {
+        ConverseError::Template {
+            reason: format!("{}", error),
+        }
+    }
+}
+
+impl From<actix::MailboxError> for ConverseError {
+    fn from(error: actix::MailboxError) -> ConverseError {
+        ConverseError::Actix { error: Box::new(error) }
+    }
+}
+
+impl From<actix_web::Error> for ConverseError {
+    fn from(error: actix_web::Error) -> ConverseError {
+        ConverseError::ActixWeb { error }
+    }
+}
+
+impl From<reqwest::Error> for ConverseError {
+    fn from(error: reqwest::Error) -> ConverseError {
+        ConverseError::InternalError {
+            reason: format!("Failed to make HTTP request: {}", error),
+        }
+    }
+}
+
+impl From<tokio_timer::Error> for ConverseError {
+    fn from(error: tokio_timer::Error) -> ConverseError {
+        ConverseError::Timer { error }
+    }
+}
+
+// Support conversion of error type into HTTP error responses:
+
+impl ResponseError for ConverseError {
+    fn error_response(&self) -> HttpResponse {
+        // Everything is mapped to internal server errors for now.
+        match *self {
+            ConverseError::ThreadClosed { id } => HttpResponse::SeeOther()
+                .header("Location", format!("/thread/{}#post-reply", id))
+                .finish(),
+            _ => HttpResponse::build(StatusCode::INTERNAL_SERVER_ERROR)
+                .body(format!("An error occured: {}", self))
+        }
+    }
+}
diff --git a/web/converse/src/handlers.rs b/web/converse/src/handlers.rs
new file mode 100644
index 0000000000..efdffb3f91
--- /dev/null
+++ b/web/converse/src/handlers.rs
@@ -0,0 +1,345 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+//! This module contains the implementation of converse's actix-web
+//! HTTP handlers.
+//!
+//! Most handlers have an associated rendering function using one of
+//! the tera templates stored in the `/templates` directory in the
+//! project root.
+
+use actix::prelude::*;
+use actix_web::*;
+use actix_web::http::Method;
+use actix_web::middleware::identity::RequestIdentity;
+use actix_web::middleware::{Started, Middleware};
+use actix_web;
+use db::*;
+use errors::ConverseError;
+use futures::Future;
+use mime_guess::guess_mime_type;
+use models::*;
+use oidc::*;
+use render::*;
+
+type ConverseResponse = Box<Future<Item=HttpResponse, Error=ConverseError>>;
+
+const HTML: &'static str = "text/html";
+const ANONYMOUS: i32 = 1;
+const NEW_THREAD_LENGTH_ERR: &'static str = "Title and body can not be empty!";
+
+/// Represents the state carried by the web server actors.
+pub struct AppState {
+    /// Address of the database actor
+    pub db: Addr<Syn, DbExecutor>,
+
+    /// Address of the OIDC actor
+    pub oidc: Addr<Syn, OidcExecutor>,
+
+    /// Address of the rendering actor
+    pub renderer: Addr<Syn, Renderer>,
+}
+
+pub fn forum_index(state: State<AppState>) -> ConverseResponse {
+    state.db.send(ListThreads)
+        .flatten()
+        .and_then(move |res| state.renderer.send(IndexPage {
+            threads: res
+        }).from_err())
+        .flatten()
+        .map(|res| HttpResponse::Ok().content_type(HTML).body(res))
+        .responder()
+}
+
+/// Returns the ID of the currently logged in user. If there is no ID
+/// present, the ID of the anonymous user will be returned.
+pub fn get_user_id(req: &HttpRequest<AppState>) -> i32 {
+    if let Some(id) = req.identity() {
+        // If this .expect() call is triggered, someone is likely
+        // attempting to mess with their cookies. These requests can
+        // be allowed to fail without further ado.
+        id.parse().expect("Session cookie contained invalid data!")
+    } else {
+        ANONYMOUS
+    }
+}
+
+/// This handler retrieves and displays a single forum thread.
+pub fn forum_thread(state: State<AppState>,
+                    req: HttpRequest<AppState>,
+                    thread_id: Path<i32>) -> ConverseResponse {
+    let id = thread_id.into_inner();
+    let user = get_user_id(&req);
+
+    state.db.send(GetThread(id))
+        .flatten()
+        .and_then(move |res| state.renderer.send(ThreadPage {
+            current_user: user,
+            thread: res.0,
+            posts: res.1,
+        }).from_err())
+        .flatten()
+        .map(|res| HttpResponse::Ok().content_type(HTML).body(res))
+        .responder()
+}
+
+/// This handler presents the user with the "New Thread" form.
+pub fn new_thread(state: State<AppState>) -> ConverseResponse {
+    state.renderer.send(NewThreadPage::default()).flatten()
+        .map(|res| HttpResponse::Ok().content_type(HTML).body(res))
+        .responder()
+}
+
+#[derive(Deserialize)]
+pub struct NewThreadForm {
+    pub title: String,
+    pub post: String,
+}
+
+/// This handler receives a "New thread"-form and redirects the user
+/// to the new thread after creation.
+pub fn submit_thread(state: State<AppState>,
+                     input: Form<NewThreadForm>,
+                     req: HttpRequest<AppState>) -> ConverseResponse {
+    // Trim whitespace out of inputs:
+    let input = NewThreadForm {
+        title: input.title.trim().into(),
+        post: input.post.trim().into(),
+    };
+
+    // Perform simple validation and abort here if it fails:
+    if input.title.is_empty() || input.post.is_empty() {
+        return state.renderer
+            .send(NewThreadPage {
+                alerts: vec![NEW_THREAD_LENGTH_ERR],
+                title: Some(input.title),
+                post: Some(input.post),
+            })
+            .flatten()
+            .map(|res| HttpResponse::Ok().content_type(HTML).body(res))
+            .responder();
+    }
+
+    let user_id = get_user_id(&req);
+
+    let new_thread = NewThread {
+        user_id,
+        title: input.title,
+    };
+
+    let msg = CreateThread {
+        new_thread,
+        post: input.post,
+    };
+
+    state.db.send(msg)
+        .from_err()
+        .and_then(move |res| {
+            let thread = res?;
+            info!("Created new thread \"{}\" with ID {}", thread.title, thread.id);
+            Ok(HttpResponse::SeeOther()
+               .header("Location", format!("/thread/{}", thread.id))
+               .finish())
+        })
+        .responder()
+}
+
+#[derive(Deserialize)]
+pub struct NewPostForm {
+    pub thread_id: i32,
+    pub post: String,
+}
+
+/// This handler receives a "Reply"-form and redirects the user to the
+/// new post after creation.
+pub fn reply_thread(state: State<AppState>,
+                    input: Form<NewPostForm>,
+                    req: HttpRequest<AppState>) -> ConverseResponse {
+    let user_id = get_user_id(&req);
+
+    let new_post = NewPost {
+        user_id,
+        thread_id: input.thread_id,
+        body: input.post.trim().into(),
+    };
+
+    state.db.send(CreatePost(new_post))
+        .flatten()
+        .from_err()
+        .and_then(move |post| {
+            info!("Posted reply {} to thread {}", post.id, post.thread_id);
+            Ok(HttpResponse::SeeOther()
+               .header("Location", format!("/thread/{}#post-{}", post.thread_id, post.id))
+               .finish())
+        })
+        .responder()
+}
+
+/// This handler presents the user with the form to edit a post. If
+/// the user attempts to edit a post that they do not have access to,
+/// they are currently ungracefully redirected back to the post
+/// itself.
+pub fn edit_form(state: State<AppState>,
+                 req: HttpRequest<AppState>,
+                 query: Path<GetPost>) -> ConverseResponse {
+    let user_id = get_user_id(&req);
+
+    state.db.send(query.into_inner())
+        .flatten()
+        .from_err()
+        .and_then(move |post| {
+            if user_id != 1 && post.user_id == user_id {
+                return Ok(post);
+            }
+
+            Err(ConverseError::PostEditForbidden {
+                user: user_id,
+                id: post.id,
+            })
+        })
+        .and_then(move |post| {
+            let edit_msg = EditPostPage {
+                id: post.id,
+                post: post.body,
+            };
+
+            state.renderer.send(edit_msg).from_err()
+        })
+        .flatten()
+        .map(|page| HttpResponse::Ok().content_type(HTML).body(page))
+        .responder()
+}
+
+/// This handler "executes" an edit to a post if the current user owns
+/// the edited post.
+pub fn edit_post(state: State<AppState>,
+                 req: HttpRequest<AppState>,
+                 update: Form<UpdatePost>) -> ConverseResponse {
+    let user_id = get_user_id(&req);
+
+    state.db.send(GetPost { id: update.post_id })
+        .flatten()
+        .from_err()
+        .and_then(move |post| {
+            if user_id != 1 && post.user_id == user_id {
+                 Ok(())
+            } else {
+                Err(ConverseError::PostEditForbidden {
+                    user: user_id,
+                    id: post.id,
+                })
+            }
+        })
+        .and_then(move |_| state.db.send(update.0).from_err())
+        .flatten()
+        .map(|updated| HttpResponse::SeeOther()
+             .header("Location", format!("/thread/{}#post-{}",
+                                         updated.thread_id, updated.id))
+             .finish())
+        .responder()
+}
+
+/// This handler executes a full-text search on the forum database and
+/// displays the results to the user.
+pub fn search_forum(state: State<AppState>,
+                    query: Query<SearchPosts>) -> ConverseResponse {
+    let query_string = query.query.clone();
+    state.db.send(query.into_inner())
+        .flatten()
+        .and_then(move |results| state.renderer.send(SearchResultPage {
+            results,
+            query: query_string,
+        }).from_err())
+        .flatten()
+        .map(|res| HttpResponse::Ok().content_type(HTML).body(res))
+        .responder()
+}
+
+/// This handler initiates an OIDC login.
+pub fn login(state: State<AppState>) -> ConverseResponse {
+    state.oidc.send(GetLoginUrl)
+        .from_err()
+        .and_then(|url| Ok(HttpResponse::TemporaryRedirect()
+                           .header("Location", url)
+                           .finish()))
+        .responder()
+}
+
+/// This handler handles an OIDC callback (i.e. completed login).
+///
+/// Upon receiving the callback, a token is retrieved from the OIDC
+/// provider and a user lookup is performed. If a user with a matching
+/// email-address is found in the database, it is logged in -
+/// otherwise a new user is created.
+pub fn callback(state: State<AppState>,
+                data: Form<CodeResponse>,
+                mut req: HttpRequest<AppState>) -> ConverseResponse {
+    state.oidc.send(RetrieveToken(data.0)).flatten()
+        .map(|author| LookupOrCreateUser {
+            email: author.email,
+            name: author.name,
+        })
+        .and_then(move |msg| state.db.send(msg).from_err()).flatten()
+        .and_then(move |user| {
+            info!("Completed login for user {} ({})", user.email, user.id);
+            req.remember(user.id.to_string());
+            Ok(HttpResponse::SeeOther()
+               .header("Location", "/")
+               .finish())})
+        .responder()
+}
+
+/// This is an extension trait to enable easy serving of embedded
+/// static content.
+///
+/// It is intended to be called with `include_bytes!()` when setting
+/// up the actix-web application.
+pub trait EmbeddedFile {
+    fn static_file(self, path: &'static str, content: &'static [u8]) -> Self;
+}
+
+impl EmbeddedFile for App<AppState> {
+    fn static_file(self, path: &'static str, content: &'static [u8]) -> Self {
+        self.route(path, Method::GET, move |_: HttpRequest<_>| {
+            let mime = format!("{}", guess_mime_type(path));
+            HttpResponse::Ok()
+                .content_type(mime.as_str())
+                .body(content)
+        })
+    }
+}
+
+/// Middleware used to enforce logins unceremoniously.
+pub struct RequireLogin;
+
+impl <S> Middleware<S> for RequireLogin {
+    fn start(&self, req: &mut HttpRequest<S>) -> actix_web::Result<Started> {
+        let logged_in = req.identity().is_some();
+        let is_oidc_req = req.path().starts_with("/oidc");
+
+        if !is_oidc_req && !logged_in {
+            Ok(Started::Response(
+                HttpResponse::SeeOther()
+                    .header("Location", "/oidc/login")
+                    .finish()
+            ))
+        } else {
+            Ok(Started::Done)
+        }
+    }
+}
diff --git a/web/converse/src/main.rs b/web/converse/src/main.rs
new file mode 100644
index 0000000000..55d84b981b
--- /dev/null
+++ b/web/converse/src/main.rs
@@ -0,0 +1,223 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+#[macro_use]
+extern crate askama;
+
+#[macro_use]
+extern crate diesel;
+
+#[macro_use]
+extern crate failure;
+
+#[macro_use]
+extern crate log;
+
+#[macro_use]
+extern crate serde_derive;
+
+extern crate actix;
+extern crate actix_web;
+extern crate chrono;
+extern crate comrak;
+extern crate env_logger;
+extern crate futures;
+extern crate hyper;
+extern crate md5;
+extern crate mime_guess;
+extern crate r2d2;
+extern crate rand;
+extern crate reqwest;
+extern crate serde;
+extern crate serde_json;
+extern crate tokio;
+extern crate tokio_timer;
+extern crate url;
+extern crate url_serde;
+
+/// Simple macro used to reduce boilerplate when defining actor
+/// message types.
+macro_rules! message {
+    ( $t:ty, $r:ty ) => {
+        impl Message for $t {
+            type Result = $r;
+        }
+    }
+}
+
+pub mod db;
+pub mod errors;
+pub mod handlers;
+pub mod models;
+pub mod oidc;
+pub mod render;
+pub mod schema;
+
+use actix::prelude::*;
+use actix_web::*;
+use actix_web::http::Method;
+use actix_web::middleware::Logger;
+use actix_web::middleware::identity::{IdentityService, CookieIdentityPolicy};
+use db::*;
+use diesel::pg::PgConnection;
+use diesel::r2d2::{ConnectionManager, Pool};
+use handlers::*;
+use oidc::OidcExecutor;
+use rand::{OsRng, Rng};
+use render::Renderer;
+use std::env;
+
+fn config(name: &str) -> String {
+    env::var(name).expect(&format!("{} must be set", name))
+}
+
+fn config_default(name: &str, default: &str) -> String {
+    env::var(name).unwrap_or(default.into())
+}
+
+fn start_db_executor() -> Addr<Syn, DbExecutor> {
+    info!("Initialising database connection pool ...");
+    let db_url = config("DATABASE_URL");
+
+    let manager = ConnectionManager::<PgConnection>::new(db_url);
+    let pool = Pool::builder().build(manager).expect("Failed to initialise DB pool");
+
+    SyncArbiter::start(2, move || DbExecutor(pool.clone()))
+}
+
+fn schedule_search_refresh(db: Addr<Syn, DbExecutor>) {
+    use tokio::prelude::*;
+    use tokio::timer::Interval;
+    use std::time::{Duration, Instant};
+    use std::thread;
+
+    let task = Interval::new(Instant::now(), Duration::from_secs(60))
+        .from_err()
+        .for_each(move |_| db.send(db::RefreshSearchView).flatten())
+        .map_err(|err| error!("Error while updating search view: {}", err));
+
+    thread::spawn(|| tokio::run(task));
+}
+
+fn start_oidc_executor(base_url: &str) -> Addr<Syn, OidcExecutor> {
+    info!("Initialising OIDC integration ...");
+    let oidc_url = config("OIDC_DISCOVERY_URL");
+    let oidc_config = oidc::load_oidc(&oidc_url)
+        .expect("Failed to retrieve OIDC discovery document");
+
+    let oidc = oidc::OidcExecutor {
+        oidc_config,
+        client_id: config("OIDC_CLIENT_ID"),
+        client_secret: config("OIDC_CLIENT_SECRET"),
+        redirect_uri: format!("{}/oidc/callback", base_url),
+    };
+
+    oidc.start()
+}
+
+fn start_renderer() -> Addr<Syn, Renderer> {
+    let comrak = comrak::ComrakOptions{
+        github_pre_lang: true,
+        ext_strikethrough: true,
+        ext_table: true,
+        ext_autolink: true,
+        ext_tasklist: true,
+        ext_footnotes: true,
+        ext_tagfilter: true,
+        ..Default::default()
+    };
+
+    Renderer{ comrak }.start()
+}
+
+fn gen_session_key() -> [u8; 64] {
+    let mut key_bytes = [0; 64];
+    let mut rng = OsRng::new()
+        .expect("Failed to retrieve RNG for key generation");
+    rng.fill_bytes(&mut key_bytes);
+
+    key_bytes
+}
+
+fn start_http_server(base_url: String,
+                     db_addr: Addr<Syn, DbExecutor>,
+                     oidc_addr: Addr<Syn, OidcExecutor>,
+                     renderer_addr: Addr<Syn, Renderer>) {
+    info!("Initialising HTTP server ...");
+    let bind_host = config_default("CONVERSE_BIND_HOST", "127.0.0.1:4567");
+    let key = gen_session_key();
+    let require_login = config_default("REQUIRE_LOGIN", "true".into()) == "true";
+
+    server::new(move || {
+        let state = AppState {
+            db: db_addr.clone(),
+            oidc: oidc_addr.clone(),
+            renderer: renderer_addr.clone(),
+        };
+
+        let identity = IdentityService::new(
+            CookieIdentityPolicy::new(&key)
+                .name("converse_auth")
+                .path("/")
+                .secure(base_url.starts_with("https"))
+        );
+
+        let app = App::with_state(state)
+            .middleware(Logger::default())
+            .middleware(identity)
+            .resource("/", |r| r.method(Method::GET).with(forum_index))
+            .resource("/thread/new", |r| r.method(Method::GET).with(new_thread))
+            .resource("/thread/submit", |r| r.method(Method::POST).with3(submit_thread))
+            .resource("/thread/reply", |r| r.method(Method::POST).with3(reply_thread))
+            .resource("/thread/{id}", |r| r.method(Method::GET).with3(forum_thread))
+            .resource("/post/{id}/edit", |r| r.method(Method::GET).with3(edit_form))
+            .resource("/post/edit", |r| r.method(Method::POST).with3(edit_post))
+            .resource("/search", |r| r.method(Method::GET).with2(search_forum))
+            .resource("/oidc/login", |r| r.method(Method::GET).with(login))
+            .resource("/oidc/callback", |r| r.method(Method::POST).with3(callback))
+            .static_file("/static/highlight.css", include_bytes!("../static/highlight.css"))
+            .static_file("/static/highlight.js", include_bytes!("../static/highlight.js"))
+            .static_file("/static/styles.css", include_bytes!("../static/styles.css"));
+
+        if require_login {
+            app.middleware(RequireLogin)
+        } else {
+            app
+        }})
+        .bind(&bind_host).expect(&format!("Could not bind on '{}'", bind_host))
+        .start();
+}
+
+fn main() {
+    env_logger::init();
+
+    info!("Welcome to Converse! Hold on tight while we're getting ready.");
+    let sys = actix::System::new("converse");
+
+    let base_url = config("BASE_URL");
+
+    let db_addr = start_db_executor();
+    let oidc_addr = start_oidc_executor(&base_url);
+    let renderer_addr = start_renderer();
+
+    schedule_search_refresh(db_addr.clone());
+
+    start_http_server(base_url, db_addr, oidc_addr, renderer_addr);
+
+    sys.run();
+}
diff --git a/web/converse/src/models.rs b/web/converse/src/models.rs
new file mode 100644
index 0000000000..96eed419d3
--- /dev/null
+++ b/web/converse/src/models.rs
@@ -0,0 +1,127 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+use chrono::prelude::{DateTime, Utc};
+use schema::{users, threads, posts, simple_posts};
+use diesel::sql_types::{Text, Integer};
+
+/// Represents a single user in the Converse database. Converse does
+/// not handle logins itself, but rather looks them up based on the
+/// email address received from an OIDC provider.
+#[derive(Identifiable, Queryable, Serialize)]
+pub struct User {
+    pub id: i32,
+    pub name: String,
+    pub email: String,
+    pub admin: bool,
+}
+
+#[derive(Identifiable, Queryable, Serialize, Associations)]
+#[belongs_to(User)]
+pub struct Thread {
+    pub id: i32,
+    pub title: String,
+    pub posted: DateTime<Utc>,
+    pub sticky: bool,
+    pub user_id: i32,
+    pub closed: bool,
+}
+
+#[derive(Identifiable, Queryable, Serialize, Associations)]
+#[belongs_to(Thread)]
+#[belongs_to(User)]
+pub struct Post {
+    pub id: i32,
+    pub thread_id: i32,
+    pub body: String,
+    pub posted: DateTime<Utc>,
+    pub user_id: i32,
+}
+
+/// This struct is used as the query result type for the simplified
+/// post view, which already joins user information in the database.
+#[derive(Identifiable, Queryable, Serialize, Associations)]
+#[belongs_to(Thread)]
+pub struct SimplePost {
+    pub id: i32,
+    pub thread_id: i32,
+    pub body: String,
+    pub posted: DateTime<Utc>,
+    pub user_id: i32,
+    pub closed: bool,
+    pub author_name: String,
+    pub author_email: String,
+}
+
+/// This struct is used as the query result type for the thread index
+/// view, which lists the index of threads ordered by the last post in
+/// each thread.
+#[derive(Queryable, Serialize)]
+pub struct ThreadIndex {
+    pub thread_id: i32,
+    pub title: String,
+    pub thread_author: String,
+    pub created: DateTime<Utc>,
+    pub sticky: bool,
+    pub closed: bool,
+    pub post_id: i32,
+    pub post_author: String,
+    pub posted: DateTime<Utc>,
+}
+
+#[derive(Deserialize, Insertable)]
+#[table_name="threads"]
+pub struct NewThread {
+    pub title: String,
+    pub user_id: i32,
+}
+
+#[derive(Deserialize, Insertable)]
+#[table_name="users"]
+pub struct NewUser {
+    pub email: String,
+    pub name: String,
+}
+
+#[derive(Deserialize, Insertable)]
+#[table_name="posts"]
+pub struct NewPost {
+    pub thread_id: i32,
+    pub body: String,
+    pub user_id: i32,
+}
+
+/// This struct models the response of a full-text search query. It
+/// does not use a table/schema definition struct like the other
+/// tables, as no table of this type actually exists.
+#[derive(QueryableByName, Debug, Serialize)]
+pub struct SearchResult {
+    #[sql_type = "Integer"]
+    pub post_id: i32,
+    #[sql_type = "Integer"]
+    pub thread_id: i32,
+    #[sql_type = "Text"]
+    pub author: String,
+    #[sql_type = "Text"]
+    pub title: String,
+
+    /// Headline represents the result of Postgres' ts_headline()
+    /// function, which highlights search terms in the search results.
+    #[sql_type = "Text"]
+    pub headline: String,
+}
diff --git a/web/converse/src/oidc.rs b/web/converse/src/oidc.rs
new file mode 100644
index 0000000000..970aeb92aa
--- /dev/null
+++ b/web/converse/src/oidc.rs
@@ -0,0 +1,149 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+//! This module provides authentication via OIDC compliant
+//! authentication sources.
+//!
+//! Currently Converse only supports a single OIDC provider. Note that
+//! this has so far only been tested with Office365.
+
+use actix::prelude::*;
+use reqwest;
+use url::Url;
+use url_serde;
+use errors::*;
+use reqwest::header::Authorization;
+use hyper::header::Bearer;
+
+/// This structure represents the contents of an OIDC discovery
+/// document.
+#[derive(Deserialize, Debug, Clone)]
+pub struct OidcConfig {
+    #[serde(with = "url_serde")]
+    authorization_endpoint: Url,
+    token_endpoint: String,
+    userinfo_endpoint: String,
+
+    scopes_supported: Vec<String>,
+    issuer: String,
+}
+
+#[derive(Clone, Debug)]
+pub struct OidcExecutor {
+    pub client_id: String,
+    pub client_secret: String,
+    pub redirect_uri: String,
+    pub oidc_config: OidcConfig,
+}
+
+/// This struct represents the form response returned by an OIDC
+/// provider with the `code`.
+#[derive(Debug, Deserialize)]
+pub struct CodeResponse {
+    pub code: String,
+}
+
+/// This struct represents the data extracted from the ID token and
+/// stored in the user's session.
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Author {
+    pub name: String,
+    pub email: String,
+}
+
+impl Actor for OidcExecutor {
+    type Context = Context<Self>;
+}
+
+/// Message used to request the login URL:
+pub struct GetLoginUrl; // TODO: Add a nonce parameter stored in session.
+message!(GetLoginUrl, String);
+
+impl Handler<GetLoginUrl> for OidcExecutor {
+    type Result = String;
+
+    fn handle(&mut self, _: GetLoginUrl, _: &mut Self::Context) -> Self::Result {
+        let mut url: Url = self.oidc_config.authorization_endpoint.clone();
+        {
+            let mut params = url.query_pairs_mut();
+            params.append_pair("client_id", &self.client_id);
+            params.append_pair("response_type", "code");
+            params.append_pair("scope", "openid");
+            params.append_pair("redirect_uri", &self.redirect_uri);
+            params.append_pair("response_mode", "form_post");
+        }
+        return url.into_string();
+    }
+}
+
+/// Message used to request the token from the returned code and
+/// retrieve userinfo from the appropriate endpoint.
+pub struct RetrieveToken(pub CodeResponse);
+message!(RetrieveToken, Result<Author>);
+
+#[derive(Debug, Deserialize)]
+struct TokenResponse {
+    access_token: String,
+}
+
+// TODO: This is currently hardcoded to Office365 fields.
+#[derive(Debug, Deserialize)]
+struct Userinfo {
+    name: String,
+    unique_name: String, // email in office365
+}
+
+impl Handler<RetrieveToken> for OidcExecutor {
+    type Result = Result<Author>;
+
+    fn handle(&mut self, msg: RetrieveToken, _: &mut Self::Context) -> Self::Result {
+        debug!("Received OAuth2 code, requesting access_token");
+        let client = reqwest::Client::new();
+        let params: [(&str, &str); 5] = [
+            ("client_id", &self.client_id),
+            ("client_secret", &self.client_secret),
+            ("grant_type", "authorization_code"),
+            ("code", &msg.0.code),
+            ("redirect_uri", &self.redirect_uri),
+        ];
+
+        let mut response = client.post(&self.oidc_config.token_endpoint)
+            .form(&params)
+            .send()?;
+
+        debug!("Received token response: {:?}", response);
+        let token: TokenResponse = response.json()?;
+
+        let user: Userinfo = client.get(&self.oidc_config.userinfo_endpoint)
+            .header(Authorization(Bearer { token: token.access_token }))
+            .send()?
+            .json()?;
+
+        Ok(Author {
+            name: user.name,
+            email: user.unique_name,
+        })
+    }
+}
+
+/// Convenience function to attempt loading an OIDC discovery document
+/// from a specified URL:
+pub fn load_oidc(url: &str) -> Result<OidcConfig> {
+    let config: OidcConfig = reqwest::get(url)?.json()?;
+    Ok(config)
+}
diff --git a/web/converse/src/render.rs b/web/converse/src/render.rs
new file mode 100644
index 0000000000..025a369ba5
--- /dev/null
+++ b/web/converse/src/render.rs
@@ -0,0 +1,265 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+//! This module defines a rendering actor used for processing Converse
+//! data into whatever format is needed by the templates and rendering
+//! them.
+
+use actix::prelude::*;
+use askama::Template;
+use errors::*;
+use std::fmt;
+use md5;
+use models::*;
+use chrono::prelude::{DateTime, Utc};
+use comrak::{ComrakOptions, markdown_to_html};
+
+pub struct Renderer {
+    pub comrak: ComrakOptions,
+}
+
+impl Actor for Renderer {
+    type Context = actix::Context<Self>;
+}
+
+/// Represents a data formatted for human consumption
+#[derive(Debug)]
+struct FormattedDate(DateTime<Utc>);
+
+impl fmt::Display for FormattedDate {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self.0.format("%a %d %B %Y, %R"))
+    }
+}
+
+/// Message used to render the index page.
+pub struct IndexPage {
+    pub threads: Vec<ThreadIndex>,
+}
+message!(IndexPage, Result<String>);
+
+#[derive(Debug)]
+struct IndexThread {
+    id: i32,
+    title: String,
+    sticky: bool,
+    closed: bool,
+    posted: FormattedDate,
+    author_name: String,
+    post_author: String,
+}
+
+#[derive(Template)]
+#[template(path = "index.html")]
+struct IndexPageTemplate {
+    threads: Vec<IndexThread>,
+}
+
+impl Handler<IndexPage> for Renderer {
+    type Result = Result<String>;
+
+    fn handle(&mut self, msg: IndexPage, _: &mut Self::Context) -> Self::Result {
+        let threads: Vec<IndexThread> = msg.threads
+            .into_iter()
+            .map(|thread| IndexThread {
+                id: thread.thread_id,
+                title: thread.title, // escape_html(&thread.title),
+                sticky: thread.sticky,
+                closed: thread.closed,
+                posted: FormattedDate(thread.posted),
+                author_name: thread.thread_author,
+                post_author: thread.post_author,
+            })
+            .collect();
+
+        let tpl = IndexPageTemplate {
+            threads
+        };
+
+        tpl.render().map_err(|e| e.into())
+    }
+}
+
+/// Message used to render a thread.
+pub struct ThreadPage {
+    pub current_user: i32,
+    pub thread: Thread,
+    pub posts: Vec<SimplePost>,
+}
+message!(ThreadPage, Result<String>);
+
+// "Renderable" structures with data transformations applied.
+#[derive(Debug)]
+struct RenderablePost {
+    id: i32,
+    body: String,
+    posted: FormattedDate,
+    author_name: String,
+    author_gravatar: String,
+    editable: bool,
+}
+
+/// This structure represents the transformed thread data with
+/// Markdown rendering and other changes applied.
+#[derive(Template)]
+#[template(path = "thread.html")]
+struct RenderableThreadPage {
+    id: i32,
+    title: String,
+    closed: bool,
+    posts: Vec<RenderablePost>,
+}
+
+/// Helper function for computing Gravatar links.
+fn md5_hex(input: &[u8]) -> String {
+    format!("{:x}", md5::compute(input))
+}
+
+fn prepare_thread(comrak: &ComrakOptions, page: ThreadPage) -> RenderableThreadPage {
+    let user = page.current_user;
+
+    let posts = page.posts.into_iter().map(|post| {
+        let editable = user != 1 && post.user_id == user;
+
+        RenderablePost {
+            id: post.id,
+            body: markdown_to_html(&post.body, comrak),
+            posted: FormattedDate(post.posted),
+            author_name: post.author_name.clone(),
+            author_gravatar: md5_hex(post.author_email.as_bytes()),
+            editable,
+        }
+    }).collect();
+
+    RenderableThreadPage {
+        posts,
+        closed: page.thread.closed,
+        id: page.thread.id,
+        title: page.thread.title,
+    }
+}
+
+impl Handler<ThreadPage> for Renderer {
+    type Result = Result<String>;
+
+    fn handle(&mut self, msg: ThreadPage, _: &mut Self::Context) -> Self::Result {
+        let renderable = prepare_thread(&self.comrak, msg);
+        renderable.render().map_err(|e| e.into())
+    }
+}
+
+/// The different types of editing modes supported by the editing
+/// template:
+#[derive(Debug, PartialEq)]
+pub enum EditingMode {
+    NewThread,
+    PostReply,
+    EditPost,
+}
+
+impl Default for EditingMode {
+    fn default() -> EditingMode { EditingMode::NewThread }
+}
+
+/// This is the template used for rendering the new thread, edit post
+/// and reply to thread forms.
+#[derive(Template, Default)]
+#[template(path = "post.html")]
+pub struct FormTemplate {
+    /// Which editing mode is to be used by the template?
+    pub mode: EditingMode,
+
+    /// Potential alerts to display to the user (e.g. input validation
+    /// results)
+    pub alerts: Vec<&'static str>,
+
+    /// Either the title to be used in the subject field or the title
+    /// of the thread the user is responding to.
+    pub title: Option<String>,
+
+    /// Body of the post being edited, if present.
+    pub post: Option<String>,
+
+    /// ID of the thread being replied to or the post being edited.
+    pub id: Option<i32>,
+}
+
+/// Message used to render new thread page.
+///
+/// It can optionally contain a vector of warnings to display to the
+/// user in alert boxes, such as input validation errors.
+#[derive(Default)]
+pub struct NewThreadPage {
+    pub alerts: Vec<&'static str>,
+    pub title: Option<String>,
+    pub post: Option<String>,
+}
+message!(NewThreadPage, Result<String>);
+
+impl Handler<NewThreadPage> for Renderer {
+    type Result = Result<String>;
+
+    fn handle(&mut self, msg: NewThreadPage, _: &mut Self::Context) -> Self::Result {
+        let ctx = FormTemplate {
+            alerts: msg.alerts,
+            title: msg.title,
+            post: msg.post,
+            ..Default::default()
+        };
+        ctx.render().map_err(|e| e.into())
+    }
+}
+
+/// Message used to render post editing page.
+pub struct EditPostPage {
+    pub id: i32,
+    pub post: String,
+}
+message!(EditPostPage, Result<String>);
+
+impl Handler<EditPostPage> for Renderer {
+    type Result = Result<String>;
+
+    fn handle(&mut self, msg: EditPostPage, _: &mut Self::Context) -> Self::Result {
+        let ctx = FormTemplate {
+            mode: EditingMode::EditPost,
+            id: Some(msg.id),
+            post: Some(msg.post),
+            ..Default::default()
+        };
+
+        ctx.render().map_err(|e| e.into())
+    }
+}
+
+/// Message used to render search results
+#[derive(Template)]
+#[template(path = "search.html")]
+pub struct SearchResultPage {
+    pub query: String,
+    pub results: Vec<SearchResult>,
+}
+message!(SearchResultPage, Result<String>);
+
+impl Handler<SearchResultPage> for Renderer {
+    type Result = Result<String>;
+
+    fn handle(&mut self, msg: SearchResultPage, _: &mut Self::Context) -> Self::Result {
+        msg.render().map_err(|e| e.into())
+    }
+}
diff --git a/web/converse/src/schema.rs b/web/converse/src/schema.rs
new file mode 100644
index 0000000000..7de6d13668
--- /dev/null
+++ b/web/converse/src/schema.rs
@@ -0,0 +1,88 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+table! {
+    posts (id) {
+        id -> Int4,
+        thread_id -> Int4,
+        body -> Text,
+        posted -> Timestamptz,
+        user_id -> Int4,
+    }
+}
+
+table! {
+    threads (id) {
+        id -> Int4,
+        title -> Varchar,
+        posted -> Timestamptz,
+        sticky -> Bool,
+        user_id -> Int4,
+        closed -> Bool,
+    }
+}
+
+table! {
+    users (id) {
+        id -> Int4,
+        email -> Varchar,
+        name -> Varchar,
+        admin -> Bool,
+    }
+}
+
+// Note: Manually inserted as print-schema does not add views.
+table! {
+    simple_posts (id) {
+        id -> Int4,
+        thread_id -> Int4,
+        body -> Text,
+        posted -> Timestamptz,
+        user_id -> Int4,
+        closed -> Bool,
+        author_name -> Text,
+        author_email -> Text,
+    }
+}
+
+// Note: Manually inserted as print-schema does not add views.
+table! {
+    thread_index (thread_id) {
+        thread_id -> Int4,
+        title -> Text,
+        thread_author -> Text,
+        created -> Timestamptz,
+        sticky -> Bool,
+        closed -> Bool,
+        post_id -> Int4,
+        post_author -> Text,
+        posted -> Timestamptz,
+    }
+}
+
+joinable!(posts -> threads (thread_id));
+joinable!(posts -> users (user_id));
+joinable!(threads -> users (user_id));
+joinable!(simple_posts -> threads (thread_id));
+
+allow_tables_to_appear_in_same_query!(
+    posts,
+    threads,
+    users,
+    simple_posts,
+);
diff --git a/web/converse/static/highlight.css b/web/converse/static/highlight.css
new file mode 100644
index 0000000000..791932b87e
--- /dev/null
+++ b/web/converse/static/highlight.css
@@ -0,0 +1,99 @@
+/*
+
+github.com style (c) Vasily Polovnyov <vast@whiteants.net>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  color: #333;
+  background: #f8f8f8;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #998;
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-subst {
+  color: #333;
+  font-weight: bold;
+}
+
+.hljs-number,
+.hljs-literal,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag .hljs-attr {
+  color: #008080;
+}
+
+.hljs-string,
+.hljs-doctag {
+  color: #d14;
+}
+
+.hljs-title,
+.hljs-section,
+.hljs-selector-id {
+  color: #900;
+  font-weight: bold;
+}
+
+.hljs-subst {
+  font-weight: normal;
+}
+
+.hljs-type,
+.hljs-class .hljs-title {
+  color: #458;
+  font-weight: bold;
+}
+
+.hljs-tag,
+.hljs-name,
+.hljs-attribute {
+  color: #000080;
+  font-weight: normal;
+}
+
+.hljs-regexp,
+.hljs-link {
+  color: #009926;
+}
+
+.hljs-symbol,
+.hljs-bullet {
+  color: #990073;
+}
+
+.hljs-built_in,
+.hljs-builtin-name {
+  color: #0086b3;
+}
+
+.hljs-meta {
+  color: #999;
+  font-weight: bold;
+}
+
+.hljs-deletion {
+  background: #fdd;
+}
+
+.hljs-addition {
+  background: #dfd;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/web/converse/static/highlight.js b/web/converse/static/highlight.js
new file mode 100644
index 0000000000..9ca7d97ba3
--- /dev/null
+++ b/web/converse/static/highlight.js
@@ -0,0 +1,2 @@
+/*! highlight.js v9.12.0 | BSD3 License | git.io/hljslicense */
+!function(e){var n="object"==typeof window&&window||"object"==typeof self&&self;"undefined"!=typeof exports?e(exports):n&&(n.hljs=e({}),"function"==typeof define&&define.amd&&define([],function(){return n.hljs}))}(function(e){function n(e){return e.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;")}function t(e){return e.nodeName.toLowerCase()}function r(e,n){var t=e&&e.exec(n);return t&&0===t.index}function a(e){return k.test(e)}function i(e){var n,t,r,i,o=e.className+" ";if(o+=e.parentNode?e.parentNode.className:"",t=B.exec(o))return w(t[1])?t[1]:"no-highlight";for(o=o.split(/\s+/),n=0,r=o.length;r>n;n++)if(i=o[n],a(i)||w(i))return i}function o(e){var n,t={},r=Array.prototype.slice.call(arguments,1);for(n in e)t[n]=e[n];return r.forEach(function(e){for(n in e)t[n]=e[n]}),t}function u(e){var n=[];return function r(e,a){for(var i=e.firstChild;i;i=i.nextSibling)3===i.nodeType?a+=i.nodeValue.length:1===i.nodeType&&(n.push({event:"start",offset:a,node:i}),a=r(i,a),t(i).match(/br|hr|img|input/)||n.push({event:"stop",offset:a,node:i}));return a}(e,0),n}function c(e,r,a){function i(){return e.length&&r.length?e[0].offset!==r[0].offset?e[0].offset<r[0].offset?e:r:"start"===r[0].event?e:r:e.length?e:r}function o(e){function r(e){return" "+e.nodeName+'="'+n(e.value).replace('"',"&quot;")+'"'}s+="<"+t(e)+E.map.call(e.attributes,r).join("")+">"}function u(e){s+="</"+t(e)+">"}function c(e){("start"===e.event?o:u)(e.node)}for(var l=0,s="",f=[];e.length||r.length;){var g=i();if(s+=n(a.substring(l,g[0].offset)),l=g[0].offset,g===e){f.reverse().forEach(u);do c(g.splice(0,1)[0]),g=i();while(g===e&&g.length&&g[0].offset===l);f.reverse().forEach(o)}else"start"===g[0].event?f.push(g[0].node):f.pop(),c(g.splice(0,1)[0])}return s+n(a.substr(l))}function l(e){return 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diff --git a/web/converse/static/styles.css b/web/converse/static/styles.css
new file mode 100644
index 0000000000..b57fd899ea
--- /dev/null
+++ b/web/converse/static/styles.css
@@ -0,0 +1,145 @@
+* :not(.material-icons) {
+  font-family: 'Ubuntu', sans-serif;
+}
+
+code, pre, code * {
+    font-family: 'Ubuntu Mono', monospace !important;
+}
+
+.cvs-title, .thread-link {
+    text-decoration: none;
+}
+
+.thread-list-item:hover {
+    background-color: #f5f5f5;
+}
+
+.thread-link {
+    padding: 5px;
+    padding-top: 10px;
+}
+
+.thread-title {
+    padding-right: 15vw;
+}
+
+.search-field {
+    margin-right: 15px;
+    max-width: 200px;
+}
+
+.thread-author {
+    font-style: italic;
+    font-size: 85%;
+}
+
+@media only screen and (min-width: 768px) {
+    .converse main {
+        padding-top: 10px;
+        padding-bottom: 10px;
+    }
+}
+
+.mdl-list__item-text-body {
+    max-height: 40px;
+}
+
+.thread-divider:after {
+    border-bottom: 1px solid rgba(0,0,0,.13);
+    content:"";
+    position: absolute;
+    width: 80%;
+}
+
+html, body {
+  margin: 0;
+  padding: 0;
+}
+.converse .mdl-layout__header-row {
+  padding-left: 40px;
+}
+.converse .mdl-layout.is-small-screen .mdl-layout__header-row h3 {
+  font-size: inherit;
+}
+.converse .mdl-card {
+  height: auto;
+  display: -webkit-flex;
+  display: -ms-flexbox;
+  display: flex;
+  -webkit-flex-direction: column;
+      -ms-flex-direction: column;
+          flex-direction: column;
+}
+.converse .mdl-card > * {
+  height: auto;
+}
+.converse .mdl-card .mdl-card__supporting-text {
+  margin: 40px;
+  -webkit-flex-grow: 1;
+      -ms-flex-positive: 1;
+          flex-grow: 1;
+  padding: 0;
+  color: inherit;
+  width: calc(100% - 80px);
+}
+.mdl-demo.converse .mdl-card__supporting-text h4 {
+  margin-top: 0;
+  margin-bottom: 20px;
+}
+.converse .mdl-card__actions {
+  margin: 0;
+  padding: 4px 40px;
+  color: inherit;
+}
+.converse section.section--center {
+  max-width: 860px;
+}
+.converse .mdl-card .avatar-card {
+    display: flex;
+    flex-direction: column;
+    text-align: center;
+    margin-top: 30px;
+}
+.desktop-avatar {
+    width: 80px;
+    margin-right: auto;
+    margin-left: auto;
+}
+.mobile-avatar {
+    width: 30px;
+    border-radius: 8px;
+    margin-bottom: 5px;
+}
+.mobile-date {
+    text-decoration: none;
+}
+.converse .mdl-card .post-box {
+    margin: 20px;
+}
+.converse .mdl-card .post-actions {
+    display: flex;
+    padding-right: 5px;
+}
+.post-action {
+    margin: 5px;
+    margin-bottom: 10px;
+}
+.converse section.post-section {
+    padding: 5px;
+}
+.post-date {
+    text-decoration: none;
+    font-size: 80%;
+}
+.mdl-layout__content {
+    flex: 1 0 auto;
+}
+.converse .reply-box {
+    padding-top: 10px;
+}
+.search-result {
+    margin: 8px;
+}
+.search-result .mdl-button {
+    margin: 3px;
+}
diff --git a/web/converse/templates/index.html b/web/converse/templates/index.html
new file mode 100644
index 0000000000..20932b2762
--- /dev/null
+++ b/web/converse/templates/index.html
@@ -0,0 +1,80 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
+    <title>Converse: Index</title>
+
+    <!-- TODO -->
+    <meta http-equiv="Content-Security-Policy" content="script-src https://code.getmdl.io 'self';">
+    <!-- <link rel="shortcut icon" href="images/favicon.png"> -->
+
+    <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Ubuntu">
+    <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
+    <link rel="stylesheet" href="https://code.getmdl.io/1.3.0/material.blue_grey-orange.min.css" />
+    <link rel="stylesheet" href="/static/styles.css">
+  </head>
+  <body class="converse mdl-base mdl-color-text--grey-700 mdl-color--grey-100">
+    <div class="mdl-layout mdl-layout--fixed-header mdl-js-layout mdl-color--grey-100">
+      <header class="mdl-layout__header mdl-layout__header--scroll mdl-color--primary-dark">
+        <div class="mdl-layout__header-row">
+          <a href="/" class="mdl-layout-title mdl-color-text--blue-grey-50 cvs-title">Converse</a>
+          <div class="mdl-layout-spacer"></div>
+          <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label mdl-color-text--blue-grey-50 search-field">
+            <form method="get" action="/search">
+              <input class="mdl-textfield__input" type="search" id="search-query" aria-label="Search" name="query">
+              <label class="mdl-textfield__label mdl-color-text--blue-grey-100" for="search-query">Search query...</label>
+              <input type="submit" hidden />
+            </form>
+          </div>
+          &nbsp;
+          <a href="/thread/new">
+            <button class="mdl-button mdl-js-button mdl-button--raised mdl-button--accent mdl-js-ripple-effect">
+              New Thread
+            </button>
+          </a>
+        </div>
+      </header>
+      <main class="mdl-layout__content">
+        <section class="section--center mdl-grid mdl-grid--no-spacing mdl-shadow--2dp">
+          <div class="mdl-card mdl-cell mdl-cell--12-col">
+            <div class="mdl-card__supporting-text mdl-grid">
+              <h4 class="mdl-cell mdl-cell--12-col">Latest threads:</h4>
+              <ul class="mdl-list">
+                {% for thread in threads %}
+                <li class="mdl-list__item thread-list-item mdl-list__item--three-line">
+                  <a class="thread-link mdl-color-text--grey-800" href="/thread/{{ thread.id }}">
+                    <span class="mdl-list__item-primary-content {% if loop.index < threads.len() %}thread-divider{% endif %}">
+                      <button class="mdl-button mdl-js-button mdl-button--fab mdl-button--mini-fab mdl-button--colored mdl-list__item-icon">
+                        <i class="material-icons">
+                          {% if thread.sticky %}
+                            announcement
+                          {% else if thread.closed %}
+                            lock
+                          {% else %}
+                            library_books
+                          {% endif %}
+                        </i>
+                      </button>
+                      <span class="thread-title">{{ thread.title }}<span class="thread-author"> by {{ thread.author_name }}</span></span>
+                      <span class="mdl-list__item-text-body">
+                        Last reply by {{ thread.post_author }} on {{ thread.posted }}.
+                      </span>
+                    </span>
+                  </a>
+                </li>
+                {% endfor %}
+              </ul>
+            </div>
+          </div>
+        </section>
+      </main>
+      <footer class="mdl-mini-footer">
+        <div class="mdl-mini-footer--right-section">
+          <p>Powered by <a href="https://github.com/tazjin/converse">Converse</a></p>
+        </div>
+      </footer>
+      </div>
+      <script src="https://code.getmdl.io/1.3.0/material.min.js"></script>
+  </body>
+</html>
diff --git a/web/converse/templates/post.html b/web/converse/templates/post.html
new file mode 100644
index 0000000000..50d23c93a3
--- /dev/null
+++ b/web/converse/templates/post.html
@@ -0,0 +1,124 @@
+{#
+  This template is shared by the new thread, reply and post-editing pages.
+
+  The main display differences between the different editing styles are the
+  headline of the page ("Submit new thread", "Reply to thread", "Edit post")
+  and whether or not the subject line field is displayed in the input form.
+
+  Every one of these pages can have a variable length list of alerts submitted
+  into the template, which will be rendered as Boostrap alert boxes above the
+  user input form.
+#}
+
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
+    <title>Converse: Post</title>
+
+    <meta http-equiv="Content-Security-Policy" content="script-src https://code.getmdl.io 'self';">
+    <!-- <link rel="shortcut icon" href="images/favicon.png"> -->
+
+    <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Ubuntu">
+    <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
+    <link rel="stylesheet" href="https://code.getmdl.io/1.3.0/material.blue_grey-orange.min.css" />
+    <link rel="stylesheet" href="/static/styles.css">
+  </head>
+  <body class="converse mdl-base mdl-color-text--grey-700 mdl-color--grey-100">
+    <div class="mdl-layout mdl-layout--fixed-header mdl-js-layout mdl-color--grey-100">
+      <header class="mdl-layout__header mdl-layout__header--scroll mdl-color--primary-dark">
+        <div class="mdl-layout__header-row">
+          <a href="/" class="mdl-layout-title mdl-color-text--blue-grey-50 cvs-title">
+          {% match mode %}
+            {% when EditingMode::NewThread %}
+              Converse: Submit new thread
+            {% when EditingMode::PostReply %}
+              Converse: Reply to thread
+            {% when EditingMode::EditPost %}
+              Converse: Edit post
+          {% endmatch %}
+          </a>
+          <div class="mdl-layout-spacer"></div>
+          <a href="/">
+            <button class="mdl-button mdl-js-button mdl-button--raised mdl-button--accent mdl-js-ripple-effect">
+              Back to index
+            </button>
+          </a>
+        </div>
+      </header>
+      <main class="mdl-layout__content mdl-grid">
+        <div class="mdl-card mdl-shadow--2dp mdl-cell--8-col">
+          {% match mode %}
+            {% when EditingMode::NewThread %}
+              <form action="/thread/submit" method="post">
+            {% when EditingMode::PostReply %}
+              <form action="/thread/reply" method="post">
+            {% when EditingMode::EditPost %}
+              <form action="/post/edit" method="post">
+          {% endmatch %}
+            {% match mode %}
+              {% when EditingMode::PostReply %}
+                <input type="hidden" id="thread_id" name="thread_id" value="{{ id.unwrap() }}">
+              {% when EditingMode::EditPost %}
+                <input type="hidden" id="thread_id" name="post_id" value="{{ id.unwrap() }}">
+              {% else %}
+                {# no post ID when making a new thread #}
+            {% endmatch %}
+            <div class="mdl-card__supporting-text">
+              {% for alert in alerts %}
+              <span class="mdl-chip mdl-color--red-200">
+                <span class="mdl-chip__text">{{ alert }}&nbsp;</span>
+              </span>
+              {% endfor %}
+              {% if mode == EditingMode::NewThread %}
+              <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label mdl-cell--12-col">
+                <input class="mdl-textfield__input" type="text" id="title" name="title" aria-label="thread title" required {% match title %}{% when Some with (title_text) %}value="{{ title_text }}"{% else %}{# Nothing! #}{% endmatch %}>
+                <label class="mdl-textfield__label" for="title">Thread title</label>
+              </div>
+              {% endif %}
+              <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label mdl-cell--12-col">
+                <textarea class="mdl-textfield__input" type="text" rows="25" id="post" name="post" aria-label="post content" required>
+                  {%- match post -%}
+                    {%- when Some with (post_text) -%}
+                      {{- post_text -}}
+                    {%- else -%}
+                      {# Nothing! #}
+                  {%- endmatch -%}
+                </textarea>
+                <label class="mdl-textfield__label" for="body">Content ...</label>
+              </div>
+            </div>
+            <div class="mdl-card__actions">
+              <input class="mdl-button mdl-button--raised mdl-button--colored mdl-js-button mdl-js-ripple-effect" type="submit" value="Submit!">
+            </div>
+          </form>
+        </div>
+        <div class="mdl-card mdl-shadow--2dp mdl-cell--4-col">
+          <div class="mdl-card__title mdl-card--border">
+            Quick Markdown primer:
+          </div>
+          <div class="mdl-card__supporting-text">
+            <p>
+              Remember that you can use <a href="https://daringfireball.net/projects/markdown/basics"><strong>Markdown</strong></a> when
+              writing your posts:
+            </p>
+            <p><i>*italic text*</i></p>
+            <p><strong>**bold text**</strong></p>
+            <p><s>~strikethrough text~</s></p>
+            <p><code>[link text](https://some.link.com/)</code></p>
+            <p><code>![image text](https://foo.com/thing.jpg)</code></p>
+            <p>Use <code>*</code> or <code>-</code> to enumerate lists.</p>
+            <p>See Markdown documentation for more information!</p>
+          </div>
+        </div>
+      </main>
+      <footer class="mdl-mini-footer">
+        <div class="mdl-mini-footer--right-section">
+          <p>Powered by <a href="https://github.com/tazjin/converse">Converse</a></p>
+        </div>
+      </footer>
+      </div>
+      <script src="https://code.getmdl.io/1.3.0/material.min.js"></script>
+  </body>
+</html>
diff --git a/web/converse/templates/search.html b/web/converse/templates/search.html
new file mode 100644
index 0000000000..a74b60e0a7
--- /dev/null
+++ b/web/converse/templates/search.html
@@ -0,0 +1,67 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
+        <title>Converse: Search results</title>
+
+        <!-- TODO -->
+        <meta http-equiv="Content-Security-Policy" content="script-src https://code.getmdl.io 'self';">
+        <!-- <link rel="shortcut icon" href="images/favicon.png"> -->
+
+        <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Ubuntu">
+        <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
+        <link rel="stylesheet" href="https://code.getmdl.io/1.3.0/material.blue_grey-orange.min.css" />
+        <link rel="stylesheet" href="/static/styles.css">
+    </head>
+    <body class="converse mdl-base mdl-color-text--grey-700 mdl-color--grey-100">
+        <div class="mdl-layout mdl-layout--fixed-header mdl-js-layout mdl-color--grey-100">
+            <header class="mdl-layout__header mdl-layout__header--scroll mdl-color--primary-dark">
+                <div class="mdl-layout__header-row">
+                    <a href="/" class="mdl-layout-title mdl-color-text--blue-grey-50 cvs-title">Converse</a>
+                    <div class="mdl-layout-spacer"></div>
+                    <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label mdl-color-text--blue-grey-50 search-field">
+                        <form method="get" action="/search">
+                            <input class="mdl-textfield__input" type="search" id="search-query" aria-label="Search" name="query">
+                            <label class="mdl-textfield__label mdl-color-text--blue-grey-100" for="search-query">Search query...</label>
+                            <input type="submit" hidden />
+                        </form>
+                    </div>
+                    &nbsp;
+                    <a href="/">
+                        <button class="mdl-button mdl-js-button mdl-button--raised mdl-button--accent mdl-js-ripple-effect">
+                            Back to index
+                        </button>
+                    </a>
+                </div>
+            </header>
+            <main class="mdl-layout__content">
+                <section class="section--center mdl-grid">
+                    <div class="mdl-cell--12-col">
+                        <h4>Search results for '{{ query }}':</h4>
+                    </div>
+                    {% for result in results %}
+                        <div class="mdl-card mdl-cell--6-col search-result mdl-shadow--2dp">
+                            <div class="mdl-card__supporting-text">
+                                <p>Posted in '{{ result.title }}' by {{ result.author }}:</p>
+                                <p>{{ result.headline|safe }}</p>
+                            </div>
+                            <div class="mdl-card__actions mdl-card--border post-actions">
+                                <div class="mdl-layout-spacer"></div>
+                                <a class="mdl-button mdl-js-button mdl-button--fab mdl-button--mini-fab mdl-button--colored" href="/thread/{{ result.thread_id }}#post-{{ result.post_id }}">
+                                    <i class="material-icons">arrow_forward</i>
+                                </a>
+                            </div>
+                        </div>
+                    {% endfor %}
+                </section>
+            </main>
+            <footer class="mdl-mini-footer">
+                <div class="mdl-mini-footer--right-section">
+                    <p>Powered by <a href="https://github.com/tazjin/converse">Converse</a></p>
+                </div>
+            </footer>
+        </div>
+        <script src="https://code.getmdl.io/1.3.0/material.min.js"></script>
+    </body>
+</html>
diff --git a/web/converse/templates/thread.html b/web/converse/templates/thread.html
new file mode 100644
index 0000000000..295cf8fcdc
--- /dev/null
+++ b/web/converse/templates/thread.html
@@ -0,0 +1,111 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
+        <title>Converse: {{ title }}</title>
+
+        <!-- TODO -->
+        <meta http-equiv="Content-Security-Policy" content="script-src https://code.getmdl.io 'self';">
+        <!-- <link rel="shortcut icon" href="images/favicon.png"> -->
+
+        <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Ubuntu">
+        <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Ubuntu+Mono">
+        <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
+        <link rel="stylesheet" href="https://code.getmdl.io/1.3.0/material.blue_grey-orange.min.css" />
+        <link rel="stylesheet" href="/static/styles.css">
+        <!-- Syntax highlighting for code -->
+        <link rel="stylesheet" href="/static/highlight.css">
+        <style>img { max-width:100%; height:auto; }</style>
+        <script src="/static/highlight.js"></script>
+    </head>
+    <body class="converse mdl-base mdl-color-text--grey-700 mdl-color--grey-100">
+        <div class="mdl-layout mdl-layout--fixed-header mdl-js-layout mdl-color--grey-100">
+            <header class="mdl-layout__header mdl-color--primary-dark">
+                <div class="mdl-layout__header-row">
+                    <a href="/" class="mdl-layout-title mdl-color-text--blue-grey-50 cvs-title">Converse: {{ title }}</a>
+                    <div class="mdl-layout-spacer"></div>
+                    <a href="/">
+                        <button class="mdl-button mdl-js-button mdl-button--raised mdl-button--accent mdl-js-ripple-effect">
+                            Back to index
+                        </button>
+                    </a>
+                </div>
+            </header>
+            <main class="mdl-layout__content">
+                {% for post in posts -%}
+                    <section id="post-{{ post.id }}" class="section--center mdl-grid mdl-grid--no-spacing">
+                        <!-- card to display avatars on desktop -->
+                        <div class="mdl-card mdl-shadow--2dp mdl-cell--2-col mdl-cell--hide-phone mdl-cell--hide-tablet avatar-box">
+                            <div class="avatar-card">
+                                <img class="desktop-avatar" src="https://www.gravatar.com/avatar/{{ post.author_gravatar }}?d=monsterid&s=160" />
+                                <p class="user-name">{{ post.author_name }}</p>
+                            </div>
+                        </div>
+                        <!-- card for main post content -->
+                        <div class="mdl-card mdl-shadow--2dp post-box mdl-cell--10-col">
+                            <!-- card section for displaying user & post information on mobile -->
+                            <div class="mdl-card__supporting-text mdl-card--border mdl-cell--hide-desktop mdl-color-text--blue-grey-500 mobile-user">
+                                <img class="mobile-avatar" src="https://www.gravatar.com/avatar/{{ post.author_gravatar }}?d=monsterid"/>
+                                <span>&nbsp;{{ post.author_name }} posted on </span>
+                                <a class="mdl-color-text--blue-grey-500 mobile-date" href="/thread/{{ id }}#post-{{ post.id }}">{{ post.posted }}</a>
+                            </div>
+                            <!-- card section to display post date on desktop -->
+                            <div class="mdl-card__menu mdl-cell--hide-phone mdl-cell--hide-tablet">
+                                <a class="post-date mdl-color-text--blue-grey-500" href="/thread/{{ id }}#post-{{ post.id }}">{{ post.posted }}</a>
+                            </div>
+                            <!-- card section for actual post content -->
+                            <div class="mdl-card__supporting-text post-box">{{ post.body|safe }}</div>
+                            <!-- card section for post actions -->
+                            <div class="mdl-card__actions post-actions">
+                                <div class="mdl-layout-spacer"></div>
+
+                                {% if post.editable %}
+                                    <a href="/post/{{ post.id }}/edit" class="mdl-button mdl-js-button mdl-button--accent" id="edit-post-{{ post.id }}" aria-label="Edit post">
+                                        <i class="material-icons">edit</i>
+                                        <span class="mdl-tooltip mdl-tooltip--top" for="edit-post-{{ post.id }}">Edit post</span>
+                                    </a>
+                                {% endif %}
+                                <button class="mdl-button mdl-js-button mdl-button--accent" id="quote-post-{{ post.id }}" aria-label="Quote post" disabled>
+                                    <i class="material-icons">reply</i>
+                                    <span class="mdl-tooltip mdl-tooltip--top" for="quote-post-{{ post.id }}">Quote post</span>
+                                </button>
+                            </div>
+                        </div>
+                    </section>
+                {% endfor %}
+
+                <!-- section for writing a response on the same page -->
+                <section id="post-reply" class="section--center mdl-grid mdl-grid--no-spacing reply-box">
+                    <div class="mdl-card mdl-shadow--2dp mdl-cell--12-col">
+                        {% if closed %}
+                        <div class="mdl-card__supporting-text">
+                            This thread is <b>closed</b> and can no longer be responded to.
+                        </div>
+                        {% else %}
+                        <form id="reply-form" action="/thread/reply" method="post">
+                            <input type="hidden" id="thread_id" name="thread_id" value="{{ id }}">
+
+                            <div class="mdl-card__supporting-text">
+                                <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label mdl-cell--12-col">
+                                    <textarea class="mdl-textfield__input" type="text" rows="8" id="post" name="post" aria-label="reply content"></textarea>
+                                    <label class="mdl-textfield__label" for="post">Write a reply</label>
+                                </div>
+                                <button class="mdl-button mdl-button--raised mdl-button--primary mdl-js-button mdl-js-ripple-effect" type="submit">
+                                    Post!
+                                </button>
+                            </div>
+                        </form>
+                        {% endif %}
+                    </div>
+                </section>
+            </main>
+            <footer class="mdl-mini-footer">
+                <div class="mdl-mini-footer--right-section">
+                    <p>Powered by <a href="https://github.com/tazjin/converse">Converse</a></p>
+                </div>
+            </footer>
+        </div>
+        <script src="https://code.getmdl.io/1.3.0/material.min.js"></script>
+    </body>
+</html>
diff --git a/web/converse/todo.org b/web/converse/todo.org
new file mode 100644
index 0000000000..379f10753a
--- /dev/null
+++ b/web/converse/todo.org
@@ -0,0 +1,13 @@
+* DONE Pin *-versions in cargo.toml
+* DONE Markdown support
+* DONE Post ordering as expected
+* DONE Stickies!
+* DONE Search
+* DONE Post editing
+* TODO Configurable number of DB workers
+* TODO Match certain types of Diesel errors (esp. for "not found")
+* TODO Sketch out categories vs. tags system
+* TODO Quote button
+* TODO Multiquote buttons
+* TODO Pagination
+* TODO Multi-thread guest accounts