{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"#[allow(clippy::disallowed_methods)]"}]}
    #[allow(clippy::disallowed_methods)]
    let rustc = env::var("RUSTC").expect("proc-macro-srv's build script expects RUSTC to be set");
    let output = Command::new(rustc).arg("--version").output().expect("rustc --version must run");