| warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes |
| --> $DIR/basic.rs:5:12 |
| | |
| LL | #![feature(return_type_notation)] |
| | ^^^^^^^^^^^^^^^^^^^^ |
| | |
| = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information |
| = note: `#[warn(incomplete_features)]` on by default |
| |
| error: future cannot be sent between threads safely |
| --> $DIR/basic.rs:23:13 |
| | |
| LL | is_send(foo::<T>()); |
| | ^^^^^^^^^^ future returned by `foo` is not `Send` |
| | |
| = help: within `impl Future<Output = Result<(), ()>>`, the trait `Send` is not implemented for `impl Future<Output = Result<(), ()>> { <T as Foo>::method() }`, which is required by `impl Future<Output = Result<(), ()>>: Send` |
| note: future is not `Send` as it awaits another future which is not `Send` |
| --> $DIR/basic.rs:13:5 |
| | |
| LL | T::method().await?; |
| | ^^^^^^^^^^^ await occurs here on type `impl Future<Output = Result<(), ()>> { <T as Foo>::method() }`, which is not `Send` |
| note: required by a bound in `is_send` |
| --> $DIR/basic.rs:17:20 |
| | |
| LL | fn is_send(_: impl Send) {} |
| | ^^^^ required by this bound in `is_send` |
| |
| error: aborting due to 1 previous error; 1 warning emitted |
| |
