43 lines
2.3 KiB
Text
43 lines
2.3 KiB
Text
error[E0277]: `<impl Foo as Foo>::Bar` cannot be sent between threads safely
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--> $DIR/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs:14:20
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LL | assert_is_send(&bar);
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| -------------- ^^^^ `<impl Foo as Foo>::Bar` cannot be sent between threads safely
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| required by a bound introduced by this call
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= help: the trait `Send` is not implemented for `<impl Foo as Foo>::Bar`
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= note: consider using `std::sync::Arc<<impl Foo as Foo>::Bar>`; for more information visit <https://doc.rust-lang.org/book/ch16-03-shared-state.html>
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note: required by a bound in `assert_is_send`
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--> $DIR/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs:30:22
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LL | fn assert_is_send<T: Send>(_: &T) {}
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| ^^^^ required by this bound in `assert_is_send`
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help: introduce a type parameter with a trait bound instead of using `impl Trait`
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LL | async fn run<F: Foo>(_: &(), foo: F) -> std::io::Result<()> where <F as Foo>::Bar: Send {
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| ++++++++ ~ +++++++++++++++++++++++++++
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error[E0277]: `<impl Foo as Foo>::Bar` cannot be sent between threads safely
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--> $DIR/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs:24:20
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LL | assert_is_send(&bar);
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| -------------- ^^^^ `<impl Foo as Foo>::Bar` cannot be sent between threads safely
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| |
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| required by a bound introduced by this call
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= help: the trait `Send` is not implemented for `<impl Foo as Foo>::Bar`
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= note: consider using `std::sync::Arc<<impl Foo as Foo>::Bar>`; for more information visit <https://doc.rust-lang.org/book/ch16-03-shared-state.html>
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note: required by a bound in `assert_is_send`
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--> $DIR/issue-79843-impl-trait-with-missing-bounds-on-async-fn.rs:30:22
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LL | fn assert_is_send<T: Send>(_: &T) {}
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| ^^^^ required by this bound in `assert_is_send`
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help: introduce a type parameter with a trait bound instead of using `impl Trait`
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LL | async fn run2<F: Foo>(_: &(), foo: F) -> std::io::Result<()> where <F as Foo>::Bar: Send {
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| ~~~~~~~~ ~ +++++++++++++++++++++++++++
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0277`.
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