| error[E0277]: `?` couldn't convert the error to `()` |
| --> $DIR/try-on-option.rs:7:6 |
| | |
| LL | x?; |
| | ^ the trait `std::convert::From<std::option::NoneError>` is not implemented for `()` |
| | |
| = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait |
| = note: required by `std::convert::From::from` |
| |
| error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`) |
| --> $DIR/try-on-option.rs:13:5 |
| | |
| LL | x?; |
| | ^^ cannot use the `?` operator in a function that returns `u32` |
| | |
| = help: the trait `std::ops::Try` is not implemented for `u32` |
| = note: required by `std::ops::Try::from_error` |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0277`. |
