error[E0507]: cannot move out of a shared reference
  --> $DIR/do-not-suggest-removing-wrong-ref-pattern-issue-132806.rs:8:58
   |
LL |     let _ = HashMap::<String, i32>::new().iter().filter(|&(&_k, &_v)| { true });
   |                                                          ^^^--^^^^^^
   |                                                             |
   |                                                             data moved here
   |                                                             move occurs because `_k` has type `String`, which does not implement the `Copy` trait
   |
help: consider removing the borrow
   |
LL -     let _ = HashMap::<String, i32>::new().iter().filter(|&(&_k, &_v)| { true });
LL +     let _ = HashMap::<String, i32>::new().iter().filter(|&(_k, &_v)| { true });
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0507`.