Collecting boxing==0.1.0
  1 location(s) to search for versions of boxing:
  * https://pypi.python.org/simple/boxing/
  Getting page https://pypi.python.org/simple/boxing/
  Analyzing links from page https://pypi.python.org/simple/boxing/
    Found link https://pypi.python.org/packages/00/8d/07373e66282cfb13583940df9a9d63996ee249e2df7c06962847fdcd69b0/boxing-0.1.0-py3-none-any.whl#md5=3621a4ccc17fb74233f158ef0b09fc6d (from https://pypi.python.org/simple/boxing/), version: 0.1.0
    Skipping link https://pypi.python.org/packages/7d/b1/b0af4dd99164b6b0f8c4a7e4406e230a1b65acbc24ba0654bc367567bf6c/boxing-0.1.0-py3.6.egg#md5=0b08497f16db1ca699cdb7f1b6f166f0 (from https://pypi.python.org/simple/boxing/); unsupported archive format: .egg
    Found link https://pypi.python.org/packages/69/0e/d5e7ff53dd3b6cd9c9d97dfbf9617e0dd964674c88eda7ebc9785c42d458/boxing-0.1.0.tar.gz#md5=1c84fe55ac0d22f249fe119181c5bebd (from https://pypi.python.org/simple/boxing/), version: 0.1.0
  Using version 0.1.0 (newest of versions: 0.1.0)
  Downloading boxing-0.1.0-py3-none-any.whl
  Downloading from URL https://pypi.python.org/packages/00/8d/07373e66282cfb13583940df9a9d63996ee249e2df7c06962847fdcd69b0/boxing-0.1.0-py3-none-any.whl#md5=3621a4ccc17fb74233f158ef0b09fc6d (from https://pypi.python.org/simple/boxing/)
  Saved /tmp/tmp5440ukje/boxing-0.1.0-py3-none-any.whl
Skipping boxing, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-w1e2iknk/boxing