Error code E0206
The Copy
trait was implemented on a type which is neither a struct nor an
enum.
Erroneous code example:
#![allow(unused)] fn main() { #[derive(Copy, Clone)] struct Bar; impl Copy for &'static mut Bar { } // error! }
You can only implement Copy
for a struct or an enum.
The previous example will fail because &'static mut Bar
is not a struct or enum.