src/test/ui/associated-types/associated-types-issue-20346.stderr

   1 error[E0271]: type mismatch resolving `<Adapter<I> as Iterator>::Item == Option<T>`
   2   --> $DIR/associated-types-issue-20346.rs:34:5
   3    |
   4 LL | fn test_adapter<T, I: Iterator<Item=Option<T>>>(it: I) {
   5    |                 - this type parameter
   6 ...
   7 LL |     is_iterator_of::<Option<T>, _>(&adapter);
   8    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch resolving `<Adapter<I> as Iterator>::Item == Option<T>`
   9    |
  10 note: expected this to be `Option<T>`
  11   --> $DIR/associated-types-issue-20346.rs:23:17
  12    |
  13 LL |     type Item = T;
  14    |                 ^
  15    = note:        expected enum `Option<T>`
  16            found type parameter `T`
  17 note: required by a bound in `is_iterator_of`
  18   --> $DIR/associated-types-issue-20346.rs:15:34
  19    |
  20 LL | fn is_iterator_of<A, I: Iterator<Item=A>>(_: &I) {}
  21    |                                  ^^^^^^ required by this bound in `is_iterator_of`
  22
  23 error: aborting due to previous error
  24
  25 For more information about this error, try `rustc --explain E0271`.