Starting with batch-mode

[Decebal]

I am starting to work with batch-mode in Emacs.
I have a test.el (nothing fancy) with:
    (defun testing ()
      (princ "Dit is een test\n")
    )


I call this with:
     time emacs -batch -nw -l ~/test.el --eval="(testing)"

This works, but generates a lot of output on stderr. I could get rid
of this with:
     time emacs -batch -nw -l ~/test.el --eval="(testing)" 2>/dev/null

But then I can not use stderr in my script. Is there a way around
this?