| error[E0599]: no method named `drain` found for type `&mut std::collections::HashMap<K, V>` in the current scope | |
| --> $DIR/issue-35677.rs:3:10 | |
| | | |
| LL | this.drain() | |
| | ^^^^^ | |
| | | |
| = note: the method `drain` exists but the following trait bounds were not satisfied: | |
| `K : std::cmp::Eq` | |
| `K : std::hash::Hash` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0599`. |