error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator
  --> tests/ui/double_ended_iterator_last.rs:5:5
   |
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:22:13
   |
LL |     let _ = DeIterator.last();
   |             ^^^^^^^^^^^------
   |                        |
   |                        help: try: `next_back()`

error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator
  --> tests/ui/double_ended_iterator_last.rs:114:36
   |
LL |     println!("Last element is {}", v.last().unwrap().0);
   |                                    ^^^^^^^^
   |
   = note: this change will alter drop order which may be undesirable
help: try
   |
LL ~     let mut v = DropDeIterator(v.into_iter());
LL ~     println!("Last element is {}", v.next_back().unwrap().0);
   |

error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator
  --> tests/ui/double_ended_iterator_last.rs:119:36
   |
LL |     println!("Last element is {}", v.0.last().unwrap().0);
   |                                    ^^^^^^^^^^
   |
   = note: this change will alter drop order which may be undesirable
help: try
   |
LL ~     let mut v = (DropDeIterator(v.into_iter()), 42);
LL ~     println!("Last element is {}", v.0.next_back().unwrap().0);
   |

error: aborting due to 4 previous errors