rust/tests/ui/suggestions/issue-79843-impl-trait-with-missing-bounds-on-async-fn.stderr
2023-08-28 03:16:48 -07:00

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