cat >req.txt <<EOFsetuptools>=18.5html5libEOFvirtualenv testenvtestenv/bin/pip install -r req.txtCollecting setuptools>=18.5 (from -r req.txt (line 1))  Using cached setuptools-24.0.3-py2.py3-none-any.whlCollecting html5lib (from -r req.txt (line 2))  Using cached html5lib-0.999999999.tar.gz    Complete output from command python setup.py egg_info:    html5lib requires setuptools version 18.5 or above; please upgrade before installing (you have 18.2)    ----------------------------------------Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/49/p3xmv77x6fnb2lwl5kpvmvs40000gp/T/pip-build-0vYISn/html5libYou are using pip version 7.1.2, however version 8.1.2 is available.You should consider upgrading via the 'pip install --upgrade pip' command.