error: implementation of `Trait` is not general enough | |
--> $DIR/hrtb-exists-forall-trait-contravariant.rs:34:5 | |
| | |
LL | trait Trait<T> {} | |
| ----------------- trait `Trait` defined here | |
... | |
LL | foo::<()>(); | |
| ^^^^^^^^^ implementation of `Trait` is not general enough | |
| | |
= note: `()` must implement `Trait<for<'b> fn(&'b u32)>` | |
= note: ...but `()` actually implements `Trait<fn(&'0 u32)>`, for some specific lifetime `'0` | |
error: aborting due to previous error | |