error[E0277]: the trait bound `Value: Default` is not satisfied --> tests/ui/deserialize_missing_default.rs:6:10 | 6 | #[derive(NixDeserialize)] | ^^^^^^^^^^^^^^ the trait `Default` is not implemented for `Value` | = note: this error originates in the derive macro `NixDeserialize` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider annotating `Value` with `#[derive(Default)]` | 4 + #[derive(Default)] 5 | pub struct Value(String); |