b7fc1a7431
When a trait is not implemented for a type, but there *is* an `impl` for another type or different trait params, we format the output to use highlighting in the same way that E0308 does for types. The logic accounts for 3 cases: - When both the type and trait in the expected predicate and the candidate are different - When only the types are different - When only the trait generic params are different For each case, we use slightly different formatting and wording.
15 lines
734 B
Plaintext
15 lines
734 B
Plaintext
error[E0277]: the trait bound `Struct: Trait<isize>` is not satisfied
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--> $DIR/coercion-generic-bad.rs:16:36
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LL | let s: Box<dyn Trait<isize>> = Box::new(Struct { person: "Fred" });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait<isize>` is not implemented for `Struct`
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= help: the trait `Trait<isize>` is not implemented for `Struct`
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but trait `Trait<&'static str>` is implemented for it
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= help: for that trait implementation, expected `&'static str`, found `isize`
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= note: required for the cast from `Box<Struct>` to `Box<dyn Trait<isize>>`
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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