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)] | ^^^^ `Copy` not allowed on types with destructors | = note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to previous error For more information about this error, try `rustc --explain E0184`.