| error[E0599]: no method named `is_subset` found for type `&std::collections::HashSet<T>` in the current scope | |
| --> $DIR/issue-35677.rs:4:10 | |
| | | |
| LL | this.is_subset(other) | |
| | ^^^^^^^^^ | |
| | | |
| = note: the method `is_subset` exists but the following trait bounds were not satisfied: | |
| `T : std::cmp::Eq` | |
| `T : std::hash::Hash` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0599`. |