Collecting flake8-checkstyle==0.0.1
  1 location(s) to search for versions of flake8-checkstyle:
  * https://pypi.python.org/simple/flake8-checkstyle/
  Getting page https://pypi.python.org/simple/flake8-checkstyle/
  Analyzing links from page https://pypi.python.org/simple/flake8-checkstyle/
    Found link https://pypi.python.org/packages/4f/81/8993633e04de36b79572fb9ab7e64fc9079299fa060943e837f04b36fea0/flake8_checkstyle-0.0.1-py2.py3-none-any.whl#md5=22fc3d4e5bb0ce8ae99ac4e975a32038 (from https://pypi.python.org/simple/flake8-checkstyle/), version: 0.0.1
    Found link https://pypi.python.org/packages/6a/67/df1e423a26aa9c9c13b344aa5f1661858b6c82f6cac9cb38ed77a73285e2/flake8-checkstyle-0.0.1.tar.gz#md5=8fbe8ee0b05c7c53ee487b34ab47f2a3 (from https://pypi.python.org/simple/flake8-checkstyle/), version: 0.0.1
    Skipping link https://pypi.python.org/packages/90/cf/2f3bf09f8c36f8d74cd6eabffc77796111a4774e8ced0b606f9ad38b2019/flake8_checkstyle-0.0.1-py3.6.egg#md5=143489bb8b0a8c5d4af4e39bbb8f8b53 (from https://pypi.python.org/simple/flake8-checkstyle/); unsupported archive format: .egg
  Using version 0.0.1 (newest of versions: 0.0.1)
  Downloading flake8_checkstyle-0.0.1-py2.py3-none-any.whl
  Downloading from URL https://pypi.python.org/packages/4f/81/8993633e04de36b79572fb9ab7e64fc9079299fa060943e837f04b36fea0/flake8_checkstyle-0.0.1-py2.py3-none-any.whl#md5=22fc3d4e5bb0ce8ae99ac4e975a32038 (from https://pypi.python.org/simple/flake8-checkstyle/)
  Saved /tmp/tmp3vsa6gb5/flake8_checkstyle-0.0.1-py2.py3-none-any.whl
Skipping flake8-checkstyle, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-em775keu/flake8-checkstyle