{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"///"}]}
    /// Allows using the CMPXCHG16B target feature.
    (accepted, closure_to_fn_coercion, "1.19.0", Some(39817)),
    (accepted, cmpxchg16b_target_feature, "1.69.0", Some(44839)),