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Note user-facing types of coercion failure by compiler-errors · Pull Request #11...
source link: https://github.com/rust-lang/rust/pull/111451
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When coercing, for example, Box<A> into Box<dyn B>, make sure that any failure notes mention those specific types, rather than mentioning inner types, like "the cast from A to dyn B".
I expect end-users are often confused when we skip layers of types and only mention the "innermost" part of a coercion, especially when other notes point at HIR, e.g. #111406.
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