my last successful build was https://travis-ci.org/jayvdb/pywikibot-core/jobs/49425263
$ pip --version pip 1.5.6 from /home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages (python 2.7) $ python -c "import setuptools; print(setuptools.__version__)" 3.6
now, the same build reports
$ pip --version pip 6.0.7 from /home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages (python 2.7) $ python -c "import setuptools; print(setuptools.__version__)" 12.0.5
PEP440 seems to be the main problem, causing failures, and lots of noisy warnings due to the naming of dependencies.