| error[E0277]: `Error` doesn't implement `std::fmt::Debug` |
| --> $DIR/derives-span-Debug-enum.rs:19:6 |
| | |
| LL | Error //~ ERROR |
| | ^^^^^ `Error` cannot be formatted using `{:?}` |
| | |
| = help: the trait `std::fmt::Debug` is not implemented for `Error` |
| = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug` |
| = note: required because of the requirements on the impl of `std::fmt::Debug` for `&Error` |
| = note: required for the cast to the object type `dyn std::fmt::Debug` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |