Collecting crossenv==0.1
  1 location(s) to search for versions of crossenv:
  * https://pypi.python.org/simple/crossenv/
  Getting page https://pypi.python.org/simple/crossenv/
  Analyzing links from page https://pypi.python.org/simple/crossenv/
    Found link https://pypi.python.org/packages/10/14/9d66bd9949775c2b1e1d72d215eeda7058b76c1ed0d41b88611fb7fb12f0/crossenv-0.1.tar.gz#md5=a2b8ed65554a2f959e6f40ce8350c622 (from https://pypi.python.org/simple/crossenv/) (requires-python:>=3.4), version: 0.1
    Found link https://pypi.python.org/packages/56/0a/1e7dc176d5b4f7d856b0d23efd2b5e96eaa4446168eb725059c396c5c5f9/crossenv-0.1-py3-none-any.whl#md5=df55edeba1d2116f4f9944401fa11a98 (from https://pypi.python.org/simple/crossenv/) (requires-python:>=3.4), version: 0.1
  Using version 0.1 (newest of versions: 0.1)
  Downloading crossenv-0.1-py3-none-any.whl
  Downloading from URL https://pypi.python.org/packages/56/0a/1e7dc176d5b4f7d856b0d23efd2b5e96eaa4446168eb725059c396c5c5f9/crossenv-0.1-py3-none-any.whl#md5=df55edeba1d2116f4f9944401fa11a98 (from https://pypi.python.org/simple/crossenv/) (requires-python:>=3.4)
  Saved /tmp/tmpyd4r08qi/crossenv-0.1-py3-none-any.whl
Skipping crossenv, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-vy9vxjhf/crossenv