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error[E0277]: the trait bound `T: std::marker::Copy` is not satisfied
--> $DIR/wf-in-fn-ret.rs:10:16
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LL | struct MustBeCopy<T:Copy> {
| ------------------------- required by `MustBeCopy`
...
LL | fn bar<T>() -> MustBeCopy<T>
| ^^^^^^^^^^^^^ the trait `std::marker::Copy` is not implemented for `T`
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help: consider restricting this type parameter with `T: std::marker::Copy`
--> $DIR/wf-in-fn-ret.rs:10:8
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LL | fn bar<T>() -> MustBeCopy<T>
| ^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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