Collecting mittens==0.1
  1 location(s) to search for versions of mittens:
  * https://pypi.python.org/simple/mittens/
  Getting page https://pypi.python.org/simple/mittens/
  Analyzing links from page https://pypi.python.org/simple/mittens/
    Found link https://pypi.python.org/packages/a3/69/351b597b2cc4171db0d094cf445294067f97f14a42a726a55b87d2a39a44/mittens-0.1-py2.py3-none-any.whl#md5=2e74dfe8d38ab993ace63dc86c55f052 (from https://pypi.python.org/simple/mittens/), version: 0.1
    Found link https://pypi.python.org/packages/fb/68/b3e7135e58589d00d49ee92e881f6f19e189c967547335f31356232d5a32/mittens-0.1.tar.gz#md5=9247dfab62ef050ac9dadfeeda42ecf5 (from https://pypi.python.org/simple/mittens/), version: 0.1
  Using version 0.1 (newest of versions: 0.1)
  Downloading mittens-0.1-py2.py3-none-any.whl
  Downloading from URL https://pypi.python.org/packages/a3/69/351b597b2cc4171db0d094cf445294067f97f14a42a726a55b87d2a39a44/mittens-0.1-py2.py3-none-any.whl#md5=2e74dfe8d38ab993ace63dc86c55f052 (from https://pypi.python.org/simple/mittens/)
  Saved /tmp/tmp6xr97rb1/mittens-0.1-py2.py3-none-any.whl
Skipping mittens, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-k_260b3i/mittens