Created temporary directory: /tmp/pip-ephem-wheel-cache-ilrve5ar
Created temporary directory: /tmp/pip-req-tracker-j917suhg
Created requirements tracker '/tmp/pip-req-tracker-j917suhg'
Created temporary directory: /tmp/pip-wheel-i0zbupu6
Collecting python-dev-tools==2019.2.23
  1 location(s) to search for versions of python-dev-tools:
  * https://pypi.org/simple/python-dev-tools/
  Getting page https://pypi.org/simple/python-dev-tools/
  Analyzing links from page https://pypi.org/simple/python-dev-tools/
    Found link https://files.pythonhosted.org/packages/0c/8b/eb145b28fa35489d262500bdab9a71ac256cff858c7a6b50b98536da6ee8/python_dev_tools-2019.2.23-py2.py3-none-any.whl#sha256=6ba0af3d608124ed2bc1159f8fe04f9b48e9574d408279220654030d3b53a3c3 (from https://pypi.org/simple/python-dev-tools/), version: 2019.2.23
    Found link https://files.pythonhosted.org/packages/c1/c7/e043b15fcaad65deb86f7b6b38c64e7ac6d480860d7fde6b3e47d798f0c6/python_dev_tools-2019.2.23.tar.gz#sha256=caeed1ba63a984bd2e72a77337f8e6e07af90b6859143c100fe36783bdd1eec4 (from https://pypi.org/simple/python-dev-tools/), version: 2019.2.23
  Using version 2019.2.23 (newest of versions: 2019.2.23)
  Created temporary directory: /tmp/pip-unpack-vlyk612e
  Downloading https://files.pythonhosted.org/packages/0c/8b/eb145b28fa35489d262500bdab9a71ac256cff858c7a6b50b98536da6ee8/python_dev_tools-2019.2.23-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/0c/8b/eb145b28fa35489d262500bdab9a71ac256cff858c7a6b50b98536da6ee8/python_dev_tools-2019.2.23-py2.py3-none-any.whl#sha256=6ba0af3d608124ed2bc1159f8fe04f9b48e9574d408279220654030d3b53a3c3 (from https://pypi.org/simple/python-dev-tools/)
  Saved /tmp/tmpf5hm65iz/python_dev_tools-2019.2.23-py2.py3-none-any.whl
  Added python-dev-tools==2019.2.23 from https://files.pythonhosted.org/packages/0c/8b/eb145b28fa35489d262500bdab9a71ac256cff858c7a6b50b98536da6ee8/python_dev_tools-2019.2.23-py2.py3-none-any.whl#sha256=6ba0af3d608124ed2bc1159f8fe04f9b48e9574d408279220654030d3b53a3c3 to build tracker '/tmp/pip-req-tracker-j917suhg'
  Removed python-dev-tools==2019.2.23 from https://files.pythonhosted.org/packages/0c/8b/eb145b28fa35489d262500bdab9a71ac256cff858c7a6b50b98536da6ee8/python_dev_tools-2019.2.23-py2.py3-none-any.whl#sha256=6ba0af3d608124ed2bc1159f8fe04f9b48e9574d408279220654030d3b53a3c3 from build tracker '/tmp/pip-req-tracker-j917suhg'
Skipping python-dev-tools, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-i0zbupu6/python-dev-tools
Removed build tracker '/tmp/pip-req-tracker-j917suhg'