src/test/ui/async-await/issues/issue-67893.stderr

   1 error[E0277]: `std::sync::MutexGuard<'_, ()>` cannot be sent between threads safely
   2   --> $DIR/issue-67893.rs:9:5
   3    |
   4 LL | fn g(_: impl Send) {}
   5    |              ---- required by this bound in `g`
   6 ...
   7 LL |     g(issue_67893::run())
   8    |     ^ `std::sync::MutexGuard<'_, ()>` cannot be sent between threads safely
   9    |
  10   ::: $DIR/auxiliary/issue_67893.rs:7:20
  11    |
  12 LL | pub async fn run() {
  13    |                    - within this `impl std::future::Future`
  14    |
  15    = help: within `impl std::future::Future`, the trait `std::marker::Send` is not implemented for `std::sync::MutexGuard<'_, ()>`
  16    = note: required because it appears within the type `for<'r, 's, 't0, 't1, 't2, 't3> {std::future::ResumeTy, std::sync::Arc<std::sync::Mutex<()>>, &'r std::sync::Mutex<()>, std::result::Result<std::sync::MutexGuard<'s, ()>, std::sync::PoisonError<std::sync::MutexGuard<'t0, ()>>>, &'t1 std::sync::MutexGuard<'t2, ()>, std::sync::MutexGuard<'t3, ()>, (), impl std::future::Future}`
  17    = note: required because it appears within the type `[static generator@issue_67893::run::{{closure}}#0 for<'r, 's, 't0, 't1, 't2, 't3> {std::future::ResumeTy, std::sync::Arc<std::sync::Mutex<()>>, &'r std::sync::Mutex<()>, std::result::Result<std::sync::MutexGuard<'s, ()>, std::sync::PoisonError<std::sync::MutexGuard<'t0, ()>>>, &'t1 std::sync::MutexGuard<'t2, ()>, std::sync::MutexGuard<'t3, ()>, (), impl std::future::Future}]`
  18    = note: required because it appears within the type `std::future::from_generator::GenFuture<[static generator@issue_67893::run::{{closure}}#0 for<'r, 's, 't0, 't1, 't2, 't3> {std::future::ResumeTy, std::sync::Arc<std::sync::Mutex<()>>, &'r std::sync::Mutex<()>, std::result::Result<std::sync::MutexGuard<'s, ()>, std::sync::PoisonError<std::sync::MutexGuard<'t0, ()>>>, &'t1 std::sync::MutexGuard<'t2, ()>, std::sync::MutexGuard<'t3, ()>, (), impl std::future::Future}]>`
  19    = note: required because it appears within the type `impl std::future::Future`
  20    = note: required because it appears within the type `impl std::future::Future`
  21
  22 error: aborting due to previous error
  23
  24 For more information about this error, try `rustc --explain E0277`.