// Copyright 2017 Serde Developers // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #[macro_use] extern crate serde_derive; #[derive(Serialize)] #[serde(abc = "xyz")] //~^^ ERROR: unknown serde container attribute `abc` struct A { x: u32, } fn main() {}