1 error[E0277]: `MutexGuard<'_, ()>` cannot be sent between threads safely
2 --> $DIR/issue-67893.rs:9:5
4 LL | g(issue_67893::run())
5 | ^ `MutexGuard<'_, ()>` cannot be sent between threads safely
7 ::: $DIR/auxiliary/issue_67893.rs:7:20
9 LL | pub async fn run() {
10 | - within this `impl Future`
12 = help: within `impl Future`, the trait `Send` is not implemented for `MutexGuard<'_, ()>`
13 = note: required because it appears within the type `for<'r, 's, 't0, 't1, 't2, 't3> {ResumeTy, Arc<Mutex<()>>, &'r Mutex<()>, Result<MutexGuard<'s, ()>, PoisonError<MutexGuard<'t0, ()>>>, &'t1 MutexGuard<'t2, ()>, MutexGuard<'t3, ()>, (), impl Future}`
14 = note: required because it appears within the type `[static generator@run::{closure#0}]`
15 = note: required because it appears within the type `from_generator::GenFuture<[static generator@run::{closure#0}]>`
16 = note: required because it appears within the type `impl Future`
17 = note: required because it appears within the type `impl Future`
18 note: required by a bound in `g`
19 --> $DIR/issue-67893.rs:6:14
21 LL | fn g(_: impl Send) {}
22 | ^^^^ required by this bound in `g`
24 error: aborting due to previous error
26 For more information about this error, try `rustc --explain E0277`.