error[E0204]: the trait `Copy` may not be implemented for this type
- --> $DIR/union-copy.rs:12:6
+ --> $DIR/union-copy.rs:12:15
|
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