error: accessing first element with `x.get(0)`
  --> $DIR/get_first.rs:17:13
   |
LL |     let _ = x.get(0);
   |             ^^^^^^^^ help: try: `x.first()`
   |
   = note: `-D clippy::get-first` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::get_first)]`

error: accessing first element with `y.get(0)`
  --> $DIR/get_first.rs:23:13
   |
LL |     let _ = y.get(0);
   |             ^^^^^^^^ help: try: `y.first()`

error: accessing first element with `z.get(0)`
  --> $DIR/get_first.rs:29:13
   |
LL |     let _ = z.get(0);
   |             ^^^^^^^^ help: try: `z.first()`

error: accessing first element with `non_primitives.get(0)`
  --> $DIR/get_first.rs:45:13
   |
LL |     let _ = non_primitives.get(0);
   |             ^^^^^^^^^^^^^^^^^^^^^ help: try: `non_primitives.first()`

error: aborting due to 4 previous errors