{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"\"the"}]}
        "the `#[rustc_reservation_impl]` attribute is internally used \
        template!(NameValueStr: "reservation message"), ErrorFollowing, EncodeCrossCrate::Yes,
        for reserving `impl<T> From<!> for T` as part of the effort to stabilize `!`"