{"ast_node_type":"impl","tokens":[{"end":89,"kind":"keyword","start":0,"text":"span_bug!(tcx.def_span(def_id),"}]}
            span_bug!(tcx.def_span(def_id), "RPITIT in impl should not have item bounds")
        Some(ty::ImplTraitInTraitData::Impl { .. }) => {
        }