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error[E0053]: method `bar` has an incompatible type for trait
--> $DIR/specialization-broken.rs:15:22
|
LL | default impl<U> Foo for U
| - found 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:8:22
|
LL | fn bar(&self) -> impl Sized;
| ^^^^^^^^^^
= note: expected signature `fn(&_) -> impl Sized`
found signature `fn(&_) -> U`
error: method with return-position `impl Trait` in trait cannot be specialized
--> $DIR/specialization-broken.rs:15:5
|
LL | fn bar(&self) -> U {
| ^^^^^^^^^^^^^^^^^^
|
= note: specialization behaves in inconsistent and surprising ways with return position `impl Trait` in traits, and for now is disallowed
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0053`.
|
