头大的kubernetes client-go exec

今天是第6天被client-go的exec非严重错误如log.info级别，结果直接返回报错弄得头大。目前用的代码是

if exec, err = remotecommand.NewSPDYExecutor(e.LinkConfig, "POST",
   e.Client.CoreV1().RESTClient().Post().
      Resource("pods").
      Name(runName).
      Namespace(namespace).
      SubResource("exec").
      Param("container", podName).
      VersionedParams(
         &v1.PodExecOptions{
            Command: cmd,
            Stdin:   false,
            Stdout:  true,
            Stderr:  true,
            TTY:     tty,
         },
         scheme.ParameterCodec,
      ).URL()); err == nil {
   err = exec.Stream(remotecommand.StreamOptions{
      Tty: true,
      Stdin:  nil,
      Stdout: &stdout,
      Stderr: &stderr,
   })
}