error[E0004]: non-exhaustive patterns: type `&!` is non-empty --> $DIR/always-inhabited-union-ref.rs:24:11 | LL | match uninhab_ref() { | ^^^^^^^^^^^^^ | = note: the matched value is of type `&!` = note: references are always considered inhabited help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown | LL ~ match uninhab_ref() { LL + _ => todo!(), LL + } | error[E0004]: non-exhaustive patterns: type `Foo` is non-empty --> $DIR/always-inhabited-union-ref.rs:28:11 | LL | match uninhab_union() { | ^^^^^^^^^^^^^^^ | note: `Foo` defined here --> $DIR/always-inhabited-union-ref.rs:11:11 | LL | pub union Foo { | ^^^ = note: the matched value is of type `Foo` help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown | LL ~ match uninhab_union() { LL + _ => todo!(), LL + } | error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0004`.