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error[E0277]: the trait bound `T: Copy` is not satisfied
--> $DIR/wf-in-fn-ret.rs:10:16
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LL | fn bar<T>() -> MustBeCopy<T>
| ^^^^^^^^^^^^^ the trait `Copy` is not implemented for `T`
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note: required by a bound in `MustBeCopy`
--> $DIR/wf-in-fn-ret.rs:6:21
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LL | struct MustBeCopy<T:Copy> {
| ^^^^ required by this bound in `MustBeCopy`
help: consider restricting type parameter `T`
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LL | fn bar<T: std::marker::Copy>() -> MustBeCopy<T>
| +++++++++++++++++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.
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