error[E0277]: the trait bound `Vec<()>: Copy` is not satisfied
  --> $DIR/generic-associated-types-bad.rs:20:12
   |
LL |     let _: Ty::Pr<Vec<()>>;
   |            ^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `Vec<()>`
   |
note: required by a bound in `Ty::Pr`
  --> $DIR/generic-associated-types-bad.rs:10:16
   |
LL |     type Pr<T: Copy> = T;
   |                ^^^^ required by this bound in `Ty::Pr`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.