{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"|err|"}]}
                |err| self.handle_fn_abi_err(*err, span, FnAbiRequest::OfFnPtr { sig, extra_args }),
            tcx.fn_abi_of_fn_ptr(self.typing_env().as_query_input((sig, extra_args))).map_err(
            ),