Traceback (most recent call last):
File "/home/travis/virtualenv/python3.3.6/lib/python3.3/site-packages/setuptools/sandbox.py", line 152, in save_modules
yield saved
File "/home/travis/virtualenv/python3.3.6/lib/python3.3/site-packages/setuptools/sandbox.py", line 193, in setup_context
yield
File "/home/travis/virtualenv/python3.3.6/lib/python3.3/site-packages/setuptools/sandbox.py", line 237, in run_setup
DirectorySandbox(setup_dir).run(runner)
File "/home/travis/virtualenv/python3.3.6/lib/python3.3/site-packages/setuptools/sandbox.py", line 267, in run
return func()
File "/home/travis/virtualenv/python3.3.6/lib/python3.3/site-packages/setuptools/sandbox.py", line 236, in runner
_execfile(setup_script, ns)
File "/home/travis/virtualenv/python3.3.6/lib/python3.3/site-packages/setuptools/sandbox.py", line 46, in _execfile
exec(code, globals, locals)
File "/tmp/easy_install-zoycy7/cryptography-2.2.2/setup.py", line 28, in <module>
reqs = f.read()
RuntimeError: cryptography requires setuptools 18.5 or newer, please upgrade to a newer version of setuptools
https://travis-ci.org/eddyxu/cpp-coveralls/jobs/400703421#L483