PyCon 2017 - Batavia - Error running tests

$  python setup.py test -s tests.modules.test_base64
/usr/local/lib/python2.7/site-packages/setuptools/dist.py:285: UserWarning: Normalizing '3.4.0-dev19' to '3.4.0.dev19'
  normalized_version,
running test
running egg_info
writing batavia.egg-info/PKG-INFO
writing top-level names to batavia.egg-info/top_level.txt
writing dependency_links to batavia.egg-info/dependency_links.txt
writing pbr to batavia.egg-info/pbr.json
reading manifest file 'batavia.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'Makefile'
warning: no files found matching 'requirements*.txt'
writing manifest file 'batavia.egg-info/SOURCES.txt'
running build_ext
building 'batavia.js'
ERROR

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ERROR: setUpClass (tests.modules.test_base64.Base64Tests)
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Traceback (most recent call last):
  File "/Users/olemis/Documents/workspace/pycon2017/sprint/beeware/batavia/tests/utils.py", line 397, in setUpClass
    setUpSuite()
  File "/Users/olemis/Documents/workspace/pycon2017/sprint/beeware/batavia/tests/utils.py", line 64, in setUpSuite
    except subprocess.TimeoutExpired:
AttributeError: 'module' object has no attribute 'TimeoutExpired'

----------------------------------------------------------------------
Ran 0 tests in 0.014s

FAILED (errors=1)