| error: type parameter `impl Deref<Target = Self>` is part of concrete type but not used in parameter list for the `impl Trait` type alias | |
| --> $DIR/issue-57700.rs:16:58 | |
| | | |
| LL | fn foo(self: impl Deref<Target = Self>) -> Self::Bar { | |
| | __________________________________________________________^ | |
| LL | | | |
| LL | | self | |
| LL | | } | |
| | |_____^ | |
| error: aborting due to previous error | |