tests/ui/coherence/coherence-overlap-negate-not-use-feature-gate.stderr

   1 error[E0119]: conflicting implementations of trait `Foo` for type `&_`
   2   --> $DIR/coherence-overlap-negate-not-use-feature-gate.rs:5:1
   3    |
   4 LL | impl<T: DerefMut> Foo for T {}
   5    | --------------------------- first implementation here
   6 LL | impl<U> Foo for &U {}
   7    | ^^^^^^^^^^^^^^^^^^ conflicting implementation for `&_`
   8
   9 error: aborting due to previous error
  10
  11 For more information about this error, try `rustc --explain E0119`.