occur error install pulsar via easy_install

gistfile1.txt

$ easy_install -ZU pulsar
Searching for pulsar
Reading http://pypi.python.org/simple/pulsar/
Reading https://github.com/quantmind/pulsar
Best match: pulsar 0.4.6
Downloading http://pypi.python.org/packages/source/p/pulsar/pulsar-0.4.6.tar.gz#md5=9425e2110a6d2b0a6216121d52b12fc2
Processing pulsar-0.4.6.tar.gz
Running pulsar-0.4.6/setup.py -q bdist_egg --dist-dir /tmp/easy_install-4qNzrr/pulsar-0.4.6/egg-dist-tmp-oozueS
warning: no files found matching '*.py' under directory 'lib'
warning: no files found matching '*.h' under directory 'lib'
warning: no files found matching '*.c' under directory 'lib'
warning: no files found matching '*.pyx' under directory 'lib'
warning: no files found matching '*.pxd' under directory 'lib'
zip_safe flag not set; analyzing archive contents...
pulsar.async.defer: module MAY be using inspect.trace
pulsar.utils.version: module references __file__
pulsar.utils.importer: module references __file__
pulsar.utils.system.winprocess: module references __file__
pulsar.utils.system.winservice: module references __file__
pulsar.apps.rpc.handlers: module MAY be using inspect.trace
pulsar.apps.test.plugins.profile: module references __file__
Adding pulsar 0.4.6 to easy-install.pth file

Installed /home/hattori/.virtualenvs/test/lib/python2.7/site-packages/pulsar-0.4.6-py2.7.egg
Processing dependencies for pulsar
Finished processing dependencies for pulsar
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "/usr/lib/python2.7/multiprocessing/util.py", line 284, in _exit_function
    info('process shutting down')
TypeError: 'NoneType' object is not callable
Error in sys.exitfunc:
Traceback (most recent call last):
  File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "/usr/lib/python2.7/multiprocessing/util.py", line 284, in _exit_function
    info('process shutting down')
TypeError: 'NoneType' object is not callable

but install success.