rustc/tests/ui/coherence/coherence-overlap-negate-not-use-feature-gate.stderr
2025-01-11 15:57:26 +01:00

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error[E0119]: conflicting implementations of trait `Foo` for type `&_`
--> $DIR/coherence-overlap-negate-not-use-feature-gate.rs:5:1
|
LL | impl<T: DerefMut> Foo for T {}
| --------------------------- first implementation here
LL | impl<U> Foo for &U {}
| ^^^^^^^^^^^^^^^^^^ 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`.