error[E0412]: cannot find type `UUU` in this scope
  --> $DIR/ignore-err-clauses.rs:7:5
   |
LL |     UUU: Copy,
   |     ^^^ not found in this scope

error[E0282]: type annotations needed
  --> $DIR/ignore-err-clauses.rs:3:14
   |
LL | fn dbl<T>(x: T) -> <T as Add>::Output
   |              ^ cannot infer type for type parameter `T`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0282, E0412.
For more information about an error, try `rustc --explain E0282`.