src/test/ui/feature-gates/feature-gate-with_negative_coherence.stderr

   1 error[E0119]: conflicting implementations of trait `Foo` for type `&_`
   2   --> $DIR/feature-gate-with_negative_coherence.rs:5:1
   3    |
   4 LL | impl<T: std::ops::DerefMut> Foo for T { }
   5    | ------------------------------------- first implementation here
   6 LL |
   7 LL | impl<T> Foo for &T { }
   8    | ^^^^^^^^^^^^^^^^^^ conflicting implementation for `&_`
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0119`.