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6efddac288
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:
```
error[E0277]: the trait bound `i32: Bar` is not satisfied
--> f100.rs:6:6
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6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
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3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
25 lines
1.2 KiB
Plaintext
25 lines
1.2 KiB
Plaintext
error[E0277]: `<P as Process<'_>>::Item` is not an iterator
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--> $DIR/issue-22872.rs:20:40
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LL | let _: Box<dyn for<'b> Wrap<'b>> = Box::new(Wrapper(process));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ `<P as Process<'_>>::Item` is not an iterator
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= help: the trait `Iterator` is not implemented for `<P as Process<'_>>::Item`, which is required by `for<'b> Wrapper<P>: Wrap<'b>`
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note: required for `Wrapper<P>` to implement `for<'b> Wrap<'b>`
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--> $DIR/issue-22872.rs:7:13
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LL | impl<'b, P> Wrap<'b> for Wrapper<P>
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| ^^^^^^^^ ^^^^^^^^^^
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LL | where P: Process<'b>,
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LL | <P as Process<'b>>::Item: Iterator {
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| -------- unsatisfied trait bound introduced here
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= note: required for the cast from `Box<Wrapper<P>>` to `Box<dyn for<'b> Wrap<'b>>`
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help: consider further restricting the associated type
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LL | fn push_process<P>(process: P) where P: Process<'static>, <P as Process<'_>>::Item: Iterator {
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| ++++++++++++++++++++++++++++++++++++
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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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