{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"Ty::new_error(tcx,"}]}
                Ty::new_error(tcx, guar)
            if let Some(guar) = tables.tainted_by_errors {
            } else if let Some(hidden_ty) = tables.concrete_opaque_types.get(&def_id) {