1error[E0204]: the trait `Copy` may not be implemented for this type 2 --> $DIR/opt-in-copy.rs:7:6 3 | 4LL | but_i_cant: CantCopyThis, 5 | ------------------------ this field does not implement `Copy` 6... 7LL | impl Copy for IWantToCopyThis {} 8 | ^^^^ 9 10error[E0204]: the trait `Copy` may not be implemented for this type 11 --> $DIR/opt-in-copy.rs:19:6 12 | 13LL | ButICant(CantCopyThisEither), 14 | ------------------ this field does not implement `Copy` 15... 16LL | impl Copy for IWantToCopyThisToo {} 17 | ^^^^ 18 19error: aborting due to 2 previous errors 20 21For more information about this error, try `rustc --explain E0204`. 22