error[E0004]: non-exhaustive patterns: type `usize` is non-empty --> $DIR/pointer-sized-int.rs:48:11 | LL | match 7usize {} | ^^^^^^ | = note: the matched value is of type `usize` help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown | LL ~ match 7usize { LL + _ => todo!(), LL + } | error: aborting due to previous error For more information about this error, try `rustc --explain E0004`.