tests/ui/impl-trait/universal-mismatched-type.stderr

   1 error[E0308]: mismatched types
   2   --> $DIR/universal-mismatched-type.rs:4:5
   3    |
   4 LL | fn foo(x: impl Debug) -> String {
   5    |           ----------     ------ expected `String` because of return type
   6    |           |
   7    |           this type parameter
   8 LL |     x
   9    |     ^ expected `String`, found type parameter `impl Debug`
  10    |
  11    = note:      expected struct `String`
  12            found type parameter `impl Debug`
  13
  14 error: aborting due to previous error
  15
  16 For more information about this error, try `rustc --explain E0308`.