error[E0184]: the trait `Copy` may not be implemented for this type; the type has a destructor
  --> $DIR/E0184.rs:1:10
   |
LL | #[derive(Copy)] //~ ERROR E0184
   |          ^^^^ Copy not allowed on types with destructors

error: aborting due to previous error

For more information about this error, try `rustc --explain E0184`.