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```
help: consider restricting type parameter `T` with traits `Copy` and `Trait`
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LL | fn duplicate_custom<T: Copy + Trait>(t: S<T>) -> (S<T>, S<T>) {
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```
```
help: consider restricting type parameter `V` with trait `Copy`
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LL | fn index<'a, K, V: std::marker::Copy>(map: &'a HashMap<K, V>, k: K) -> &'a V {
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```
20 lines
700 B
Plaintext
20 lines
700 B
Plaintext
error[E0277]: the trait bound `U: Copy` is not satisfied
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--> $DIR/wf-in-fn-where-clause.rs:10:14
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LL | where T: MustBeCopy<U>
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| ^^^^^^^^^^^^^ the trait `Copy` is not implemented for `U`
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note: required by a bound in `MustBeCopy`
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--> $DIR/wf-in-fn-where-clause.rs:6:20
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LL | trait MustBeCopy<T:Copy> {
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| ^^^^ required by this bound in `MustBeCopy`
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help: consider further restricting type parameter `U` with trait `Copy`
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LL | where T: MustBeCopy<U>, U: std::marker::Copy
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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