| error[E0004]: non-exhaustive patterns: `None` and `Some(_)` not covered | |
| --> $DIR/E0004-2.rs:4:11 | |
| | | |
| LL | match x { } | |
| | ^ patterns `None` and `Some(_)` not covered | |
| | | |
| = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0004`. |