error: manual backwards iteration
  --> $DIR/manual_next_back.rs:32:20
   |
LL |     let _ = (0..10).rev().next().unwrap();
   |                    ^^^^^^^^^^^^^ help: use: `.next_back()`
   |
   = note: `-D clippy::manual-next-back` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::manual_next_back)]`

error: manual backwards iteration
  --> $DIR/manual_next_back.rs:33:32
   |
LL |     let _ = "something".bytes().rev().next();
   |                                ^^^^^^^^^^^^^ help: use: `.next_back()`

error: aborting due to 2 previous errors