rust/tests/ui/async-await/in-trait/async-example-desugared-boxed.current.stderr

error: method `foo` should be async because the method from the trait is async
  --> $DIR/async-example-desugared-boxed.rs:17:5
   |
LL |     async fn foo(&self) -> i32;
   |     --------------------------- required because the trait method is async
...
LL |     fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>> {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error
Ensure async trait impls are async (or otherwise return an opaque type) As a workaround for the full `#[refine]` semantics not being implemented yet, forbit returning a concrete future type like `Box<dyn Future>` or a manually implemented Future. `-> impl Future` is still permitted; while that can also cause accidental refinement, that's behind a different feature gate (`return_position_impl_trait_in_trait`) and that problem exists regardless of whether the trait method is async, so will have to be solved more generally. Fixes #102745 2022-11-02 19:45:08 -05:00			error: method `foo` should be async because the method from the trait is async
Run existing async in traits tests using -Zlower-impl-trait-in-trait-to-assoc-ty 2023-03-07 15:26:02 -06:00			`--> $DIR/async-example-desugared-boxed.rs:17:5`
Ensure async trait impls are async (or otherwise return an opaque type) As a workaround for the full `#[refine]` semantics not being implemented yet, forbit returning a concrete future type like `Box<dyn Future>` or a manually implemented Future. `-> impl Future` is still permitted; while that can also cause accidental refinement, that's behind a different feature gate (`return_position_impl_trait_in_trait`) and that problem exists regardless of whether the trait method is async, so will have to be solved more generally. Fixes #102745 2022-11-02 19:45:08 -05:00			`\|`
			`LL \| async fn foo(&self) -> i32;`
			`\| --------------------------- required because the trait method is async`
			`...`
			`LL \| fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>> {`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`

			`error: aborting due to previous error`