{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"(unstable,"}]}
    (unstable, loongarch_target_feature, "1.73.0", Some(44839)),
    (unstable, lahfsahf_target_feature, "1.78.0", Some(44839)),
    (unstable, m68k_target_feature, "1.85.0", Some(134328)),