| error[E0277]: `NonError` doesn't implement `std::fmt::Display` | |
| --> $DIR/result_no_display.rs:4:19 | |
| | | |
| 4 | fn f() -> Result<()>; | |
| | ^^^^^^^^^^ `NonError` cannot be formatted with the default formatter | |
| | | |
| = help: the trait `std::fmt::Display` is not implemented for `NonError` | |
| = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead |