| 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 `&_` |
| | |
| = note: downstream crates may implement trait `std::ops::DerefMut` for type `&_` |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0119`. |
