src/test/ui/derives/derives-span-Debug-tuple-struct.stderr

   1 error[E0277]: `Error` doesn't implement `std::fmt::Debug`
   2   --> $DIR/derives-span-Debug-tuple-struct.rs:9:5
   3    |
   4 LL |     Error
   5    |     ^^^^^ `Error` cannot be formatted using `{:?}`
   6    |
   7    = help: the trait `std::fmt::Debug` is not implemented for `Error`
   8    = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
   9    = note: required because of the requirements on the impl of `std::fmt::Debug` for `&Error`
  10    = note: required for the cast to the object type `dyn std::fmt::Debug`
  11
  12 error: aborting due to previous error
  13
  14 For more information about this error, try `rustc --explain E0277`.