refactor(journaldriver): Use anyhow instead of failure r/3852

Apparently failure is not hip anymore, and crate updates are forcing
the use of anyhow now. Whatever.

The functionality basically stays the same, maybe error messages will
look a little bit different now.

Change-Id: I173d644688785339c16161ddeec47a534123710f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5307
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 3 insertions, 7 deletions

diff --git a/ops/journaldriver/src/main.rs b/ops/journaldriver/src/main.rs
index 0c0e5cc23bff..1315d49eff49 100644
--- a/ops/journaldriver/src/main.rs
+++ b/ops/journaldriver/src/main.rs
@@ -32,7 +32,7 @@
 //! `LOG_NAME` environment variables.
 
 #[macro_use]
-extern crate failure;
+extern crate anyhow;
 #[macro_use]
 extern crate log;
 #[macro_use]
@@ -49,9 +49,9 @@ extern crate serde;
 extern crate systemd;
 extern crate ureq;
 
+use anyhow::{Context, Result};
 use chrono::offset::LocalResult;
 use chrono::prelude::{DateTime, TimeZone, Utc};
-use failure::ResultExt;
 use serde_json::{from_str, Value};
 use std::fs::{self, rename, File};
 use std::io::{self, ErrorKind, Read, Write};
@@ -72,9 +72,6 @@ const METADATA_ZONE_URL: &str = "http://metadata.google.internal/computeMetadata
 const METADATA_PROJECT_URL: &str =
     "http://metadata.google.internal/computeMetadata/v1/project/project-id";
 
-/// Convenience type alias for results using failure's `Error` type.
-type Result<T> = std::result::Result<T, failure::Error>;
-
 /// Representation of static service account credentials for GCP.
 #[derive(Debug, Deserialize)]
 struct Credentials {
@@ -158,8 +155,7 @@ fn get_metadata(url: &str) -> Result<String> {
 /// Convenience helper for determining the project ID.
 fn get_project_id() -> String {
     env::var("GOOGLE_CLOUD_PROJECT")
-        .map_err(Into::into)
-        .or_else(|_: failure::Error| get_metadata(METADATA_PROJECT_URL))
+        .or_else(|_| get_metadata(METADATA_PROJECT_URL))
         .expect("Could not determine project ID")
 }