rust/tests/ui/async-await/issue-64130-1-sync.stderr
Esteban Küber 6efddac288 Provide more context on derived obligation error primary label
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.
2024-01-30 21:28:18 +00:00

23 lines
826 B
Plaintext

error: future cannot be shared between threads safely
--> $DIR/issue-64130-1-sync.rs:22:13
|
LL | is_sync(bar());
| ^^^^^ future returned by `bar` is not `Sync`
|
= help: within `impl Future<Output = ()>`, the trait `Sync` is not implemented for `Foo`, which is required by `impl Future<Output = ()>: Sync`
note: future is not `Sync` as this value is used across an await
--> $DIR/issue-64130-1-sync.rs:15:11
|
LL | let x = Foo;
| - has type `Foo` which is not `Sync`
LL | baz().await;
| ^^^^^ await occurs here, with `x` maybe used later
note: required by a bound in `is_sync`
--> $DIR/issue-64130-1-sync.rs:11:15
|
LL | fn is_sync<T: Sync>(t: T) { }
| ^^^^ required by this bound in `is_sync`
error: aborting due to 1 previous error