src/test/ui/type-alias-impl-trait/generic_duplicate_param_use4.stderr

   1 error[E0277]: `U` doesn't implement `Debug`
   2   --> $DIR/generic_duplicate_param_use4.rs:8:18
   3    |
   4 LL | type Two<T, U> = impl Debug;
   5    |                  ^^^^^^^^^^ `U` cannot be formatted using `{:?}` because it doesn't implement `Debug`
   6    |
   7 help: consider restricting type parameter `U`
   8    |
   9 LL | type Two<T, U: std::fmt::Debug> = impl Debug;
  10    |              +++++++++++++++++
  11
  12 error: aborting due to previous error
  13
  14 For more information about this error, try `rustc --explain E0277`.