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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:6:22
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LL | struct MustBeCopy<T: Copy> {
| ^^^^ required by this bound in `MustBeCopy`
help: consider restricting type parameter `T` with trait `Copy`
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LL | fn bar<T: std::marker::Copy>() -> MustBeCopy<T>
| +++++++++++++++++++
error[E0308]: mismatched types
--> $DIR/wf-in-fn-ret.rs:10:16
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LL | fn bar<T>() -> MustBeCopy<T>
| --- ^^^^^^^^^^^^^ expected `MustBeCopy<T>`, found `()`
| |
| implicitly returns `()` as its body has no tail or `return` expression
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= note: expected struct `MustBeCopy<T>`
found unit type `()`
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0277, E0308.
For more information about an error, try `rustc --explain E0277`.
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