error: re-implementing `PartialEq::ne` is unnecessary --> partialeq_ne_impl.rs:10:5 | 10 | fn ne(&self, _: &Foo) -> bool { false } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D partialeq-ne-impl` implied by `-D warnings` error: aborting due to previous error(s) error: Could not compile `clippy_tests`. To learn more, run the command again with --verbose.