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error[E0004]: non-exhaustive patterns: `None` and `Some(_)` not covered
--> $DIR/E0004-2.rs:4:11
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LL | match x { }
| ^ patterns `None` and `Some(_)` not covered
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note: `Option<i32>` defined here
--> $SRC_DIR/core/src/option.rs:LL:COL
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LL | / pub enum Option<T> {
LL | | /// No value.
LL | | #[lang = "None"]
LL | | #[stable(feature = "rust1", since = "1.0.0")]
LL | | None,
| | ^^^^ not covered
... |
LL | | Some(#[stable(feature = "rust1", since = "1.0.0")] T),
| | ^^^^ not covered
LL | | }
| |_-
= note: the matched value is of type `Option<i32>`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
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LL ~ match x {
LL + None | Some(_) => todo!(),
LL ~ }
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error: aborting due to previous error
For more information about this error, try `rustc --explain E0004`.
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