rust/tests/ui/feature-gates/feature-gate-with_negative_...

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