error[E0206]: the trait `Copy` may not be implemented for this type --> $DIR/E0206.rs:3:15 | LL | impl Copy for Foo { } | ^^^ type is not a structure or enumeration error[E0206]: the trait `Copy` may not be implemented for this type --> $DIR/E0206.rs:10:15 | LL | impl Copy for &'static mut Bar { } | ^^^^^^^^^^^^^^^^ type is not a structure or enumeration error[E0117]: only traits defined in the current crate can be implemented for arbitrary types --> $DIR/E0206.rs:3:1 | LL | impl Copy for Foo { } | ^^^^^^^^^^^^^^--- | | | | | this is not defined in the current crate because arrays are always foreign | impl doesn't use only types from inside the current crate | = note: define and implement a trait or new type instead error: aborting due to 3 previous errors Some errors have detailed explanations: E0117, E0206. For more information about an error, try `rustc --explain E0117`.