| error: future cannot be sent between threads safely |
| --> $DIR/issue-71137.rs:22:14 |
| | |
| LL | fake_spawn(wrong_mutex()); |
| | ^^^^^^^^^^^^^ future returned by `wrong_mutex` is not `Send` |
| | |
| = help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `MutexGuard<'_, i32>` |
| note: future is not `Send` as this value is used across an await |
| --> $DIR/issue-71137.rs:14:25 |
| | |
| LL | let mut guard = m.lock().unwrap(); |
| | --------- has type `MutexGuard<'_, i32>` which is not `Send` |
| LL | (async { "right"; }).await; |
| | ^^^^^^ await occurs here, with `mut guard` maybe used later |
| LL | *guard += 1; |
| LL | } |
| | - `mut guard` is later dropped here |
| note: required by a bound in `fake_spawn` |
| --> $DIR/issue-71137.rs:8:27 |
| | |
| LL | fn fake_spawn<F: Future + Send + 'static>(f: F) { } |
| | ^^^^ required by this bound in `fake_spawn` |
| |
| error: aborting due to previous error |
| |
