src/test/ui/issues/issue-67552.stderr

   1 error: reached the recursion limit while instantiating `rec::<&mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut &mut Empty>`
   2   --> $DIR/issue-67552.rs:27:9
   3    |
   4 LL |         rec(identity(&mut it))
   5    |         ^^^^^^^^^^^^^^^^^^^^^^
   6    |
   7 note: `rec` defined here
   8   --> $DIR/issue-67552.rs:20:1
   9    |
  10 LL | / fn rec<T>(mut it: T)
  11 LL | | where
  12 LL | |     T: Iterator,
  13 LL | | {
  14 ...  |
  15 LL | |     }
  16 LL | | }
  17    | |_^
  18
  19 error: aborting due to previous error
  20