error[E0271]: type mismatch resolving `<() as Super>::Assoc == ()`
  --> $DIR/projection-mismatch-in-impl-where-clause.rs:13:14
   |
LL | fn test() -> impl Test {
   |              ^^^^^^^^^ expected `()`, found `u8`
   |
note: required because of the requirements on the impl of `Test` for `()`
  --> $DIR/projection-mismatch-in-impl-where-clause.rs:11:9
   |
LL | impl<T> Test for T where T: Super<Assoc = ()> {}
   |         ^^^^     ^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0271`.