| 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 |
| | |
| ::: $SRC_DIR/libcore/option.rs:LL:COL |
| | |
| LL | None, |
| | ---- not covered |
| ... |
| LL | Some(#[stable(feature = "rust1", since = "1.0.0")] T), |
| | ---- not covered |
| | |
| = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms |
| = note: the matched value is of type `std::option::Option<i32>` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0004`. |