error: to use a constant of type `CustomEq` in a pattern, `CustomEq` must be annotated with `#[derive(PartialEq, Eq)]` --> $DIR/cross-crate-fail.rs:13:9 | LL | consts::SOME => panic!(), | ^^^^^^^^^^^^ error: to use a constant of type `CustomEq` in a pattern, `CustomEq` must be annotated with `#[derive(PartialEq, Eq)]` --> $DIR/cross-crate-fail.rs:20:9 | LL | ::SOME => panic!(), | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 2 previous errors