error[E0277]: `std::cell::Cell<i32>` cannot be shared between threads safely
- --> $DIR/mutexguard-sync.rs:21:5
+ --> $DIR/mutexguard-sync.rs:11:5
|
LL | test_sync(guard);
| ^^^^^^^^^ `std::cell::Cell<i32>` cannot be shared between threads safely
= help: the trait `std::marker::Sync` is not implemented for `std::cell::Cell<i32>`
= note: required because of the requirements on the impl of `std::marker::Sync` for `std::sync::MutexGuard<'_, std::cell::Cell<i32>>`
note: required by `test_sync`
- --> $DIR/mutexguard-sync.rs:15:1
+ --> $DIR/mutexguard-sync.rs:5:1
|
LL | fn test_sync<T: Sync>(_t: T) {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^