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error[E0046]: not all trait items implemented, missing: `foo`
--> $DIR/missing-feature-flag.rs:12:1
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LL | async fn foo(_: T) -> &'static str;
| ----------------------------------- `foo` from trait
...
LL | impl<T> MyTrait<T> for MyStruct {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation
error[E0520]: `foo` specializes an item from a parent `impl`, but that item is not marked `default`
--> $DIR/missing-feature-flag.rs:16:5
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LL | impl<T> MyTrait<T> for MyStruct {}
| ------------------------------- parent `impl` is here
...
LL | async fn foo(_: i32) -> &'static str {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot specialize default item `foo`
|
= note: to specialize, `foo` in the parent `impl` must be marked `default`
error[E0308]: mismatched types
--> $DIR/missing-feature-flag.rs:16:42
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LL | async fn foo(_: i32) -> &'static str {}
| ^^ expected `&str`, found `()`
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0046, E0308, E0520.
For more information about an error, try `rustc --explain E0046`.
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