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rust/tests/ui/chalkify/impl_wf_2.stderr

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Separate bounds and predicates for associated/opaque types
2020-06-27 15:36:35 -05:00
error[E0277]: the trait bound `f32: Foo` is not satisfied
Tweak assoc type obligation spans * Point at RHS of associated type in obligation span * Point at `impl` assoc type on projection error * Reduce verbosity of recursive obligations * Point at source of binding lifetime obligation * Tweak "required bound" note * Tweak "expected... found opaque (return) type" labels * Point at set type in impl assoc type WF errors
2021-12-10 20:20:41 -06:00
--> $DIR/impl_wf_2.rs:25:17
Separate bounds and predicates for associated/opaque types
2020-06-27 15:36:35 -05:00
|
LL | type Item = f32;
Tweak assoc type obligation spans * Point at RHS of associated type in obligation span * Point at `impl` assoc type on projection error * Reduce verbosity of recursive obligations * Point at source of binding lifetime obligation * Tweak "required bound" note * Tweak "expected... found opaque (return) type" labels * Point at set type in impl assoc type WF errors
2021-12-10 20:20:41 -06:00
| ^^^ the trait `Foo` is not implemented for `f32`
Use note to point at bound introducing requirement
2021-07-31 11:26:55 -05:00
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Mention implementers of unsatisfied trait 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 | LL | impl Baz<f32> for f32 { } | ^^^^^^^^ the trait `Foo` is not implemented for `f32` | = 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 | 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 `?`.
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= help: the trait `Foo` is implemented for `i32`
Use note to point at bound introducing requirement
2021-07-31 11:26:55 -05:00
note: required by a bound in `Bar::Item`
--> $DIR/impl_wf_2.rs:8:16
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LL | type Item: Foo;
| ^^^ required by this bound in `Bar::Item`
Separate bounds and predicates for associated/opaque types
2020-06-27 15:36:35 -05:00
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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