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error[E0204]: the trait `Copy` cannot be implemented for this type
--> $DIR/union-copy.rs:12:15
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LL | a: std::mem::ManuallyDrop<String>
| --------------------------------- this field does not implement `Copy`
...
LL | impl Copy for W {}
| ^
|
note: the `Copy` impl for `ManuallyDrop<String>` requires that `String: Copy`
--> $DIR/union-copy.rs:8:8
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LL | a: std::mem::ManuallyDrop<String>
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0204`.
|
