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
|
6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
|
help: this trait has no implementations, consider adding one
--> f100.rs:2:1
|
2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
|
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
|
|
--> $DIR/issue-22872.rs:20:40
|
|
|
|
|
LL | let _: Box<dyn for<'b> Wrap<'b>> = Box::new(Wrapper(process));
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ `<P as Process<'_>>::Item` is not an iterator
|
|
|
|
|
= help: the trait `Iterator` is not implemented for `<P as Process<'_>>::Item`, which is required by `for<'b> Wrapper<P>: Wrap<'b>`
|
|
note: required for `Wrapper<P>` to implement `for<'b> Wrap<'b>`
|
|
--> $DIR/issue-22872.rs:7:13
|
|
|
|
|
LL | impl<'b, P> Wrap<'b> for Wrapper<P>
|
|
| ^^^^^^^^ ^^^^^^^^^^
|
|
LL | where P: Process<'b>,
|
|
LL | <P as Process<'b>>::Item: Iterator {
|
|
| -------- unsatisfied trait bound introduced here
|
|
= note: required for the cast from `Box<Wrapper<P>>` to `Box<dyn for<'b> Wrap<'b>>`
|
|
help: consider further restricting the associated type
|
|
|
|
|
LL | fn push_process<P>(process: P) where P: Process<'static>, <P as Process<'_>>::Item: Iterator {
|
|
| ++++++++++++++++++++++++++++++++++++
|
|
|
|
error: aborting due to 1 previous error
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|