warning: not reporting region error due to -Znll
  --> $DIR/projection-no-regions-fn.rs:24:5
   |
LL |     Box::new(x.next())
   |     ^^^^^^^^^^^^^^^^^^

warning: not reporting region error due to -Znll
  --> $DIR/projection-no-regions-fn.rs:40:5
   |
LL |     Box::new(x.next())
   |     ^^^^^^^^^^^^^^^^^^

error[E0309]: the associated type `<T as std::iter::Iterator>::Item` may not live long enough
  --> $DIR/projection-no-regions-fn.rs:24:5
   |
LL |     Box::new(x.next())
   |     ^^^^^^^^^^^^^^^^^^
   |
   = help: consider adding an explicit lifetime bound `<T as std::iter::Iterator>::Item: ReEarlyBound(0, 'a)`...

error[E0309]: the associated type `<T as std::iter::Iterator>::Item` may not live long enough
  --> $DIR/projection-no-regions-fn.rs:40:5
   |
LL |     Box::new(x.next())
   |     ^^^^^^^^^^^^^^^^^^
   |
   = help: consider adding an explicit lifetime bound `<T as std::iter::Iterator>::Item: ReEarlyBound(0, 'a)`...

error: aborting due to 2 previous errors

If you want more information on this error, try using "rustc --explain E0309"