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error[E0277]: the trait bound `U: std::marker::Copy` is not satisfied
--> $DIR/wf-struct-bound.rs:10:14
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LL | trait ExtraCopy<T:Copy> { }
| ----------------------- required by `ExtraCopy`
...
LL | where T: ExtraCopy<U>
| ^^^^^^^^^^^^ the trait `std::marker::Copy` is not implemented for `U`
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help: consider restricting this type parameter with `where U: std::marker::Copy`
--> $DIR/wf-struct-bound.rs:9:21
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LL | struct SomeStruct<T,U>
| ^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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