24 lines
930 B
Plaintext
24 lines
930 B
Plaintext
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error: future cannot be sent between threads safely
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--> $DIR/issue-71137.rs:20:3
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LL | fn fake_spawn<F: Future + Send + 'static>(f: F) { }
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| ---- required by this bound in `fake_spawn`
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...
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LL | fake_spawn(wrong_mutex());
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| ^^^^^^^^^^ future returned by `wrong_mutex` is not `Send`
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= help: within `impl std::future::Future`, the trait `std::marker::Send` is not implemented for `std::sync::MutexGuard<'_, i32>`
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note: future is not `Send` as this value is used across an await
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--> $DIR/issue-71137.rs:12:5
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LL | let mut guard = m.lock().unwrap();
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| --------- has type `std::sync::MutexGuard<'_, i32>` which is not `Send`
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LL | (async { "right"; }).await;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ await occurs here, with `mut guard` maybe used later
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LL | *guard += 1;
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LL | }
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| - `mut guard` is later dropped here
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error: aborting due to previous error
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