#[macro_use] extern crate serde_derive; mod remote { pub enum E { A { a: u8 } } } #[derive(Serialize)] //~ ERROR: proc-macro derive panicked #[serde(remote = "remote::E")] pub enum E { A { #[serde(getter = "get_a")] //~^^^^ HELP: #[serde(getter = "...")] is not allowed in an enum a: u8, } } fn main() {}