src/test/ui/type-alias-impl-trait/issue-60564.stderr

   1 error: non-defining opaque type use in defining scope
   2   --> $DIR/issue-60564.rs:19:34
   3    |
   4 LL |     fn iter_bits(self, n: u8) -> Self::BitsIter {
   5    |                                  ^^^^^^^^^^^^^^
   6    |
   7 note: used non-generic type `u8` for generic parameter
   8   --> $DIR/issue-60564.rs:8:25
   9    |
  10 LL | type IterBitsIter<T, E, I> = impl std::iter::Iterator<Item = I>;
  11    |                         ^
  12
  13 error: aborting due to previous error
  14