error: using `.iter().next()` on an array
  --> tests/ui/iter_next_slice.rs:9:13
   |
LL |     let _ = s.iter().next();
   |             ^^^^^^^^^^^^^^^ help: try calling: `s.first()`
   |
   = note: `-D clippy::iter-next-slice` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::iter_next_slice)]`

error: using `.iter().next()` on a Slice without end index
  --> tests/ui/iter_next_slice.rs:12:13
   |
LL |     let _ = s[2..].iter().next();
   |             ^^^^^^^^^^^^^^^^^^^^ help: try calling: `s.get(2)`

error: using `.iter().next()` on a Slice without end index
  --> tests/ui/iter_next_slice.rs:15:13
   |
LL |     let _ = v[5..].iter().next();
   |             ^^^^^^^^^^^^^^^^^^^^ help: try calling: `v.get(5)`

error: using `.iter().next()` on an array
  --> tests/ui/iter_next_slice.rs:18:13
   |
LL |     let _ = v.iter().next();
   |             ^^^^^^^^^^^^^^^ help: try calling: `v.first()`

error: aborting due to 4 previous errors