| error: implementation of `Trait` is not general enough | |
| --> $DIR/hrtb-exists-forall-trait-covariant.rs:33:5 | |
| | | |
| LL | foo::<()>(); | |
| | ^^^^^^^^^^^ implementation of `Trait` is not general enough | |
| | | |
| = note: `()` must implement `Trait<for<'b> fn(fn(&'b u32))>` | |
| = note: ...but it actually implements `Trait<fn(fn(&'0 u32))>`, for some specific lifetime `'0` | |
| error: aborting due to 1 previous error | |