3aac307ca6
When encountering an unsatisfied trait bound, if there are no other
suggestions, mention all the types that *do* implement that trait:
```
error[E0277]: the trait bound `f32: Foo` is not satisfied
--> $DIR/impl_wf.rs:22:6
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LL | impl Baz<f32> for f32 { }
| ^^^^^^^^ the trait `Foo` is not implemented for `f32`
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= help: the following other types implement trait `Foo`:
Option<T>
i32
str
note: required by a bound in `Baz`
--> $DIR/impl_wf.rs:18:31
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LL | trait Baz<U: ?Sized> where U: Foo { }
| ^^^ required by this bound in `Baz`
```
Mention implementers of traits in `ImplObligation`s.
Do not mention other `impl`s for closures, ranges and `?`.
25 lines
788 B
Plaintext
25 lines
788 B
Plaintext
error[E0308]: mismatched types
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--> $DIR/const-eval-overflow-3b.rs:16:22
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LL | = [0; (i8::MAX + 1u8) as usize];
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| ^^^ expected `i8`, found `u8`
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error[E0277]: cannot add `u8` to `i8`
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--> $DIR/const-eval-overflow-3b.rs:16:20
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LL | = [0; (i8::MAX + 1u8) as usize];
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| ^ no implementation for `i8 + u8`
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= help: the trait `Add<u8>` is not implemented for `i8`
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= help: the following implementations were found:
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<&'a i8 as Add<i8>>
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<&i8 as Add<&i8>>
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<i8 as Add<&i8>>
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<i8 as Add>
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and 48 others
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0277, E0308.
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For more information about an error, try `rustc --explain E0277`.
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