error[E0109]: type parameters are not allowed on this type
  --> $DIR/qualified-path-params-2.rs:28:26
   |
28 | type A = <S as Tr>::A::f<u8>;
   |                          ^^ type parameter not allowed

error[E0223]: ambiguous associated type
  --> $DIR/qualified-path-params-2.rs:28:10
   |
28 | type A = <S as Tr>::A::f<u8>;
   |          ^^^^^^^^^^^^^^^^^^^ ambiguous associated type
   |
   = note: specify the type using the syntax `<<S as Tr>::A as Trait>::f`

error: aborting due to 2 previous errors