{"ast_node_type":"other","tokens":[{"end":19,"kind":"keyword","start":0,"text":"arena_cache"}]}
        arena_cache
    query closure_saved_names_of_captured_variables(def_id: DefId) -> &'tcx IndexVec<abi::FieldIdx, Symbol> {
        desc { |tcx| "computing debuginfo for closure `{}`", tcx.def_path_str(def_id) }