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error[E0599]: the method `is_subset` exists for reference `&HashSet<T>`, but its trait bounds were not satisfied
--> $DIR/issue-35677.rs:7:10
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LL | this.is_subset(other)
| ^^^^^^^^^ method cannot be called on `&HashSet<T>` due to unsatisfied trait bounds
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= note: the following trait bounds were not satisfied:
`T: Eq`
`T: Hash`
help: consider restricting the type parameters to satisfy the trait bounds
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LL | fn is_subset<T>(this: &HashSet<T>, other: &HashSet<T>) -> bool where T: Eq, T: Hash {
| ++++++++++++++++++++
error: aborting due to previous error
For more information about this error, try `rustc --explain E0599`.
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