error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator
  --> tests/ui/double_ended_iterator_last.rs:5:18
   |
LL |     s.split(' ').last()
   |                  ^^^^^^ help: try: `next_back()`
   |
   = note: `-D clippy::double-ended-iterator-last` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::double_ended_iterator_last)]`

error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator
  --> tests/ui/double_ended_iterator_last.rs:22:24
   |
LL |     let _ = DeIterator.last();
   |                        ^^^^^^ help: try: `next_back()`

error: aborting due to 2 previous errors