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