A #[repr(..)] attribute was placed on an item type that does not support it. For example, repr(C) is only valid on structs and enums, while repr(u8) is only valid on enums.
E0517
rust A #[repr(..)] attribute was placed on an item type that does not support it. For example, repr(C) is only valid on structs and enums, while repr(u8) is only valid on enums.