1 error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
2 --> $DIR/try-on-option-diagnostics.rs:7:5
5 | ^^ cannot use the `?` operator in a function that returns `u32`
7 = help: the trait `std::ops::Try` is not implemented for `u32`
8 = note: required by `std::ops::Try::from_error`
10 error[E0277]: the `?` operator can only be used in a closure that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
11 --> $DIR/try-on-option-diagnostics.rs:14:9
14 | ^^ cannot use the `?` operator in a closure that returns `{integer}`
16 = help: the trait `std::ops::Try` is not implemented for `{integer}`
17 = note: required by `std::ops::Try::from_error`
19 error: aborting due to 2 previous errors
21 For more information about this error, try `rustc --explain E0277`.