{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"desc"}]}
        desc { |tcx| "looking up coroutine kind of `{}`", tcx.def_path_str(def_id) }
    query coroutine_kind(def_id: DefId) -> Option<hir::CoroutineKind> {
        separate_provide_extern