E0206 - Error codes index
Description: Book listing all Rust error codes

## Keyboard shortcuts

Press `←` or `→` to navigate between chapters

Press `S` or `/` to search in the book

Press `?` to show this help

Press `Esc` to hide this help

# Error code E0206

The `Copy` trait was implemented on a type which is neither a struct, an enum, nor a union.

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, an enum, or a union. The previous example will fail because `&'static mut Bar` is not a struct, an enum, or a union.