serde/serde_derive/tests/compile-fail/unknown-attribute/field.rs

#![feature(proc_macro)]

#[macro_use]
extern crate serde_derive;

#[derive(Serialize)] //~ ERROR: custom derive attribute panicked
struct C {
    #[serde(abc="xyz")] //~^^ HELP: unknown serde field attribute `abc`
    x: u32,
}

fn main() { }