// aux-build:unstable.rs extern crate unstable; use unstable::UnstableEnum; fn main() { match UnstableEnum::Stable { UnstableEnum::Stable => {} } //~^^^ non-exhaustive patterns: `UnstableEnum::Stable2` and `_` not covered match UnstableEnum::Stable { UnstableEnum::Stable => {} UnstableEnum::Stable2 => {} } //~^^^^ non-exhaustive patterns: `_` not covered }