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.
26 lines
1.1 KiB
Plaintext
26 lines
1.1 KiB
Plaintext
error: future cannot be sent between threads safely
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--> $DIR/missing-send-bound.rs:13:20
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LL | assert_is_send(test::<T>());
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| ^^^^^^^^^^^ future returned by `test` is not `Send`
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= help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `impl Future<Output = ()>`, which is required by `impl Future<Output = ()>: Send`
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note: future is not `Send` as it awaits another future which is not `Send`
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--> $DIR/missing-send-bound.rs:9:5
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LL | T::bar().await;
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| ^^^^^^^^ await occurs here on type `impl Future<Output = ()>`, which is not `Send`
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note: required by a bound in `assert_is_send`
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--> $DIR/missing-send-bound.rs:17:27
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LL | fn assert_is_send(_: impl Send) {}
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| ^^^^ required by this bound in `assert_is_send`
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help: `Send` can be made part of the associated future's guarantees for all implementations of `Foo::bar`
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LL - async fn bar();
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LL + fn bar() -> impl std::future::Future<Output = ()> + Send;
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error: aborting due to 1 previous error
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