Improve the warning messages for the `#[diagnostic::on_unimplemented]`#116931

Merged

bors merged 2 commits intorust-lang:masterfrom weiznich:improve_diagnostic_on_unimplemented_warnings

Oct 26, 2023

+139-54

Commits on Oct 19, 2023

Improve the warning messages for the #[diagnostic::on_unimplemented]
weiznich
committed

Commits on Oct 20, 2023

Fix a span for one of the test cases
weiznich
committed