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)


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