error[E0369]: binary operation `==` cannot be applied to type `Error` --> $DIR/derives-span-PartialEq-tuple-struct.rs:8:5 | LL | Error //~ ERROR | ^^^^^ | = note: an implementation of `std::cmp::PartialEq` might be missing for `Error` error[E0369]: binary operation `!=` cannot be applied to type `Error` --> $DIR/derives-span-PartialEq-tuple-struct.rs:8:5 | LL | Error //~ ERROR | ^^^^^ | = note: an implementation of `std::cmp::PartialEq` might be missing for `Error` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0369`.