error: called `flat_map(|x| x)` on an `Iterator`
  --> $DIR/flat_map_identity.rs:10:22
   |
LL |     let _ = iterator.flat_map(|x| x);
   |                      ^^^^^^^^^^^^^^^ help: try: `flatten()`
   |
   = note: `-D clippy::flat-map-identity` implied by `-D warnings`

error: called `flat_map(std::convert::identity)` on an `Iterator`
  --> $DIR/flat_map_identity.rs:13:22
   |
LL |     let _ = iterator.flat_map(convert::identity);
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flatten()`

error: aborting due to 2 previous errors