Created temporary directory: /tmp/pip-ephem-wheel-cache-4atzsht9
Created temporary directory: /tmp/pip-req-tracker-pm9io5jt
Created requirements tracker '/tmp/pip-req-tracker-pm9io5jt'
Created temporary directory: /tmp/pip-wheel-e8864i89
Looking in indexes: https://pypi.python.org/simple
Collecting pydot-ng==2.0.0
  1 location(s) to search for versions of pydot-ng:
  * https://pypi.python.org/simple/pydot-ng/
  Getting page https://pypi.python.org/simple/pydot-ng/
  Analyzing links from page https://pypi.org/simple/pydot-ng/
    Found link https://files.pythonhosted.org/packages/de/64/86b0502c3644190c0b9fed0e378ee18f31b1f0262bdead1eb9ac1d404529/pydot_ng-1.0.0.tar.gz#sha256=c420ecd08ec34c76bec98fbc1956d58a8f0bbd7b4e1d2dc90664d9fd29471341 (from https://pypi.org/simple/pydot-ng/), version: 1.0.0
    Found link https://files.pythonhosted.org/packages/a4/58/60d1ab28b9401ca6a764fa10a698f4bc8b67b4b6bdfea3c7fee8da8b934b/pydot_ng-1.0.0.zip#sha256=6096efa4714c91f24500cf01a1fdb9faa07b88a5c738d14931624bc906dd06a4 (from https://pypi.org/simple/pydot-ng/), version: 1.0.0
    Found link https://files.pythonhosted.org/packages/3c/5b/9a08333f2d70d404ffe42cea4f50159c4ad94feaa4d7585551c05cacef46/pydot_ng-2.0.0-py2.py3-none-any.whl#sha256=251ec5cde0d20ebd467b12fd8a4db0f52d2fbf6e12660a969a226823ba38644e (from https://pypi.org/simple/pydot-ng/), version: 2.0.0
    Found link https://files.pythonhosted.org/packages/60/7a/d4022ba8b47d8f5e4c58b285e66eb233745f46f07bd7e6569a695fc91e7f/pydot_ng-2.0.0.tar.gz#sha256=8c8073b97aa7030c28118961e2c6c92f046e4cb57aeba7df87146f7baa6530c5 (from https://pypi.org/simple/pydot-ng/), version: 2.0.0
  Using version 2.0.0 (newest of versions: 2.0.0)
  Created temporary directory: /tmp/pip-unpack-tzmftcd3
  Downloading https://files.pythonhosted.org/packages/3c/5b/9a08333f2d70d404ffe42cea4f50159c4ad94feaa4d7585551c05cacef46/pydot_ng-2.0.0-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/3c/5b/9a08333f2d70d404ffe42cea4f50159c4ad94feaa4d7585551c05cacef46/pydot_ng-2.0.0-py2.py3-none-any.whl#sha256=251ec5cde0d20ebd467b12fd8a4db0f52d2fbf6e12660a969a226823ba38644e (from https://pypi.org/simple/pydot-ng/)
  Saved /tmp/tmpf9jxf5s9/pydot_ng-2.0.0-py2.py3-none-any.whl
  Added pydot-ng==2.0.0 from https://files.pythonhosted.org/packages/3c/5b/9a08333f2d70d404ffe42cea4f50159c4ad94feaa4d7585551c05cacef46/pydot_ng-2.0.0-py2.py3-none-any.whl#sha256=251ec5cde0d20ebd467b12fd8a4db0f52d2fbf6e12660a969a226823ba38644e to build tracker '/tmp/pip-req-tracker-pm9io5jt'
  Removed pydot-ng==2.0.0 from https://files.pythonhosted.org/packages/3c/5b/9a08333f2d70d404ffe42cea4f50159c4ad94feaa4d7585551c05cacef46/pydot_ng-2.0.0-py2.py3-none-any.whl#sha256=251ec5cde0d20ebd467b12fd8a4db0f52d2fbf6e12660a969a226823ba38644e from build tracker '/tmp/pip-req-tracker-pm9io5jt'
Skipping pydot-ng, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-e8864i89/pydot-ng
Removed build tracker '/tmp/pip-req-tracker-pm9io5jt'