error[E0276]: impl has stricter requirements than trait
  --> $DIR/bad-item-bound-within-rpitit.rs:16:13
   |
LL |     type Item<'a>
   |     ------------- definition of `Item` from trait
...
LL |         'b: 'a;
   |             ^^ impl has extra requirement `'b: 'a`
   |
help: copy the `where` clause predicates from the trait
   |
LL |     where Self: 'b;
   |     ~~~~~~~~~~~~~~

error[E0477]: the type `&'a I` does not fulfill the required lifetime
  --> $DIR/bad-item-bound-within-rpitit.rs:19:5
   |
LL |     fn iter(&self) -> impl 'a + Iterator<Item = I::Item<'a>> {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: type must outlive the anonymous lifetime as defined here
  --> $DIR/bad-item-bound-within-rpitit.rs:10:28
   |
LL |     fn iter(&self) -> impl '_ + Iterator<Item = Self::Item<'_>>;
   |                            ^^

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0276, E0477.
For more information about an error, try `rustc --explain E0276`.