src/tools/clippy/tests/ui/entry_fixable.stderr

   1 error: usage of `contains_key` followed by `insert` on a `HashMap`
   2   --> $DIR/entry_fixable.rs:12:5
   3    |
   4 LL | /     if !m.contains_key(&k) {
   5 LL | |         m.insert(k, v);
   6 LL | |     }
   7    | |_____^ help: consider using: `m.entry(k).or_insert(v);`
   8    |
   9    = note: `-D clippy::map-entry` implied by `-D warnings`
  10
  11 error: aborting due to previous error
  12