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error: future cannot be sent between threads safely
--> tests/ui/send-not-implemented.rs:8:26
|
8 | async fn test(&self) {
| __________________________^
9 | | let mutex = Mutex::new(());
10 | | let _guard = mutex.lock().unwrap();
11 | | f().await;
12 | | }
| |_____^ future created by async block is not `Send`
|
= help: within `[async block@$DIR/tests/ui/send-not-implemented.rs:8:26: 12:6]`, the trait `Send` is not implemented for `MutexGuard<'_, ()>`
note: future is not `Send` as this value is used across an await
--> tests/ui/send-not-implemented.rs:11:12
|
10 | let _guard = mutex.lock().unwrap();
| ------ has type `MutexGuard<'_, ()>` which is not `Send`
11 | f().await;
| ^^^^^^ await occurs here, with `_guard` maybe used later
12 | }
| - `_guard` is later dropped here
= note: required for the cast from `[async block@$DIR/tests/ui/send-not-implemented.rs:8:26: 12:6]` to the object type `dyn Future<Output = ()> + Send`
error: future cannot be sent between threads safely
--> tests/ui/send-not-implemented.rs:14:38
|
14 | async fn test_ret(&self) -> bool {
| ______________________________________^
15 | | let mutex = Mutex::new(());
16 | | let _guard = mutex.lock().unwrap();
17 | | f().await;
18 | | true
19 | | }
| |_____^ future created by async block is not `Send`
|
= help: within `[async block@$DIR/tests/ui/send-not-implemented.rs:14:38: 19:6]`, the trait `Send` is not implemented for `MutexGuard<'_, ()>`
note: future is not `Send` as this value is used across an await
--> tests/ui/send-not-implemented.rs:17:12
|
16 | let _guard = mutex.lock().unwrap();
| ------ has type `MutexGuard<'_, ()>` which is not `Send`
17 | f().await;
| ^^^^^^ await occurs here, with `_guard` maybe used later
18 | true
19 | }
| - `_guard` is later dropped here
= note: required for the cast from `[async block@$DIR/tests/ui/send-not-implemented.rs:14:38: 19:6]` to the object type `dyn Future<Output = bool> + Send`