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error[E0053]: method `bar` has an incompatible type for trait
--> $DIR/specialization-broken.rs:16:22
|
LL | default impl<U> Foo for U
| - this type parameter
...
LL | fn bar(&self) -> U {
| ^
| |
| expected associated type, found type parameter `U`
| help: change the output type to match the trait: `impl Sized`
|
note: type in trait
--> $DIR/specialization-broken.rs:9:22
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LL | fn bar(&self) -> impl Sized;
| ^^^^^^^^^^
= note: expected signature `fn(&U) -> impl Sized`
found signature `fn(&U) -> U`
error: method with return-position `impl Trait` in trait cannot be specialized
--> $DIR/specialization-broken.rs:16:5
|
LL | fn bar(&self) -> U {
| ^^^^^^^^^^^^^^^^^^
|
= note: specialization behaves in inconsistent and surprising ways with `#![feature(return_position_impl_trait_in_trait)]`, and for now is disallowed
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0053`.
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