1 error: non-defining opaque type use in defining scope
2 --> $DIR/issue-68368-non-defining-use-2.rs:9:15
4 LL | fn f<'a>() -> Alias<'a, ()> {}
7 note: used non-generic type `()` for generic parameter
8 --> $DIR/issue-68368-non-defining-use-2.rs:7:16
10 LL | type Alias<'a, U> = impl Trait<U>;
13 error: could not find defining uses
14 --> $DIR/issue-68368-non-defining-use-2.rs:7:21
16 LL | type Alias<'a, U> = impl Trait<U>;
19 error: aborting due to 2 previous errors