Ever added a todo based on an open issue (perhaps in one of your dependencies)? Track the issue and be warned when it is closed!
// Our trait implementation never returns an error, but until the `nevertype` // is stabilized, we need to use the unit type. #[issue::track(url="https://github.com/rust-lang/rust/issues/35121")] type Result<T> = core::result::Result<T, ()>;
Once the tracked issue is resolved, a warning will be emitted during compile time.