salt no_out failure?

gistfile1.txt

vagrantsm ~ # salt 'vagrantminion*' test.ping
vagrantminion:
    True
vagrantsm ~ # salt 'vagrantminion*' test.ping --out=no_out
[ERROR   ] Invalid outputter no_out specified, fall back to nested
vagrantminion:
    True
vagrantsm ~ # cat /usr/lib/python2.7/site-packages/salt/output/no_out.py
# -*- coding: utf-8 -*-
'''
Display no output
=================

No output is produced when this outputter is selected
'''

# Define the module's virtual name
__virtualname__ = 'quiet'


def __virtual__():
    return __virtualname__


def output(ret):
    '''
    Don't display data. Used when you only are interested in the
    return.
    '''
    return ''
vagrantsm ~ # salt 'vagrantminion*' test.ping --out=quiet
vagrantsm ~ #