| error[E0005]: refutable pattern in local binding: `Err(_)` not covered |
| --> $DIR/recursive-types-are-not-uninhabited.rs:6:9 |
| | |
| LL | let Ok(x) = res; |
| | ^^^^^ pattern `Err(_)` not covered |
| | |
| = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant |
| = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html |
| note: `Result<u32, &R<'_>>` defined here |
| --> $SRC_DIR/core/src/result.rs:LL:COL |
| | |
| LL | pub enum Result<T, E> { |
| | --------------------- |
| ... |
| LL | Err(#[stable(feature = "rust1", since = "1.0.0")] E), |
| | ^^^ not covered |
| = note: the matched value is of type `Result<u32, &R<'_>>` |
| help: you might want to use `if let` to ignore the variant that isn't matched |
| | |
| LL | let x = if let Ok(x) = res { x } else { todo!() }; |
| | ++++++++++ ++++++++++++++++++++++ |
| help: alternatively, you might want to use let else to handle the variant that isn't matched |
| | |
| LL | let Ok(x) = res else { todo!() }; |
| | ++++++++++++++++ |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0005`. |