| 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>` |
| --> $DIR/issue-67552.rs:27:9 |
| | |
| LL | rec(identity(&mut it)) |
| | ^^^^^^^^^^^^^^^^^^^^^^ |
| | |
| note: `rec` defined here |
| --> $DIR/issue-67552.rs:20:1 |
| | |
| LL | / fn rec<T>(mut it: T) |
| LL | | where |
| LL | | T: Iterator, |
| LL | | { |
| ... | |
| LL | | } |
| LL | | } |
| | |_^ |
| |
| error: aborting due to previous error |
| |
