Collecting headercount==1.0.0
  1 location(s) to search for versions of headercount:
  * https://pypi.python.org/simple/headercount/
  Getting page https://pypi.python.org/simple/headercount/
  Analyzing links from page https://pypi.python.org/simple/headercount/
    Found link https://pypi.python.org/packages/22/86/de4c6f1cd9b2874db1726af022591ab8ce35b254334cca7067397bb469fb/headercount-1.0.0.tar.gz#md5=e03346b5f432c62d9a4c653212a1eb68 (from https://pypi.python.org/simple/headercount/) (requires-python:>=3.4), version: 1.0.0
    Found link https://pypi.python.org/packages/52/78/a3e8fc4b6ae5243033ac68b23c0ebb9de318467a861bbc76ae1474439353/headercount-1.0.0-py3-none-any.whl#md5=c8109b9a273115bd9712579ea4b7b283 (from https://pypi.python.org/simple/headercount/) (requires-python:>=3.4), version: 1.0.0
  Using version 1.0.0 (newest of versions: 1.0.0)
  Downloading headercount-1.0.0-py3-none-any.whl
  Downloading from URL https://pypi.python.org/packages/52/78/a3e8fc4b6ae5243033ac68b23c0ebb9de318467a861bbc76ae1474439353/headercount-1.0.0-py3-none-any.whl#md5=c8109b9a273115bd9712579ea4b7b283 (from https://pypi.python.org/simple/headercount/) (requires-python:>=3.4)
  Saved /tmp/tmpjsq3zbr0/headercount-1.0.0-py3-none-any.whl
Skipping headercount, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-j4c87jg_/headercount