src/test/ui/pattern/usefulness/unstable-gated-patterns.stderr

   1 error[E0004]: non-exhaustive patterns: `Unstable` not covered
   2   --> $DIR/unstable-gated-patterns.rs:10:11
   3    |
   4 LL |     match UnstableEnum::Stable {
   5    |           ^^^^^^^^^^^^^^^^^^^^ pattern `Unstable` not covered
   6    |
   7 note: `UnstableEnum` defined here
   8   --> $DIR/auxiliary/unstable.rs:11:5
   9    |
  10 LL | pub enum UnstableEnum {
  11    | ---------------------
  12 ...
  13 LL |     Unstable,
  14    |     ^^^^^^^^ not covered
  15    = note: the matched value is of type `UnstableEnum`
  16 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
  17    |
  18 LL ~         UnstableEnum::Stable2 => {}
  19 LL +         Unstable => todo!()
  20    |
  21
  22 error: aborting due to previous error
  23
  24 For more information about this error, try `rustc --explain E0004`.