src/test/ui/mismatched_types/method-help-unsatisfied-bound.stderr

   1 error[E0277]: `Foo` doesn't implement `Debug`
   2   --> $DIR/method-help-unsatisfied-bound.rs:5:5
   3    |
   4 LL |     a.unwrap();
   5    |     ^ ------ required by a bound introduced by this call
   6    |     |
   7    |     `Foo` cannot be formatted using `{:?}`
   8    |
   9    = help: the trait `Debug` is not implemented for `Foo`
  10    = note: add `#[derive(Debug)]` to `Foo` or manually `impl Debug for Foo`
  11 note: required by a bound in `Result::<T, E>::unwrap`
  12   --> $SRC_DIR/core/src/result.rs:LL:COL
  13    |
  14 LL |         E: fmt::Debug,
  15    |            ^^^^^^^^^^ required by this bound in `Result::<T, E>::unwrap`
  16 help: consider annotating `Foo` with `#[derive(Debug)]`
  17    |
  18 LL | #[derive(Debug)]
  19    |
  20
  21 error: aborting due to previous error
  22
  23 For more information about this error, try `rustc --explain E0277`.