{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"unnormalized_input_tys.iter().copied().chain(iter::once(va_list_ty)),"}]}
                    unnormalized_input_tys.iter().copied().chain(iter::once(va_list_ty)),
                unnormalized_input_tys = self.infcx.tcx.mk_type_list_from_iter(
                );