Created temporary directory: /tmp/pip-ephem-wheel-cache-omfp409s
Created temporary directory: /tmp/pip-req-tracker-28preqqc
Created requirements tracker '/tmp/pip-req-tracker-28preqqc'
Created temporary directory: /tmp/pip-wheel-nipipism
Collecting importlib-metadata==0.20
  1 location(s) to search for versions of importlib-metadata:
  * https://pypi.org/simple/importlib-metadata/
  Getting page https://pypi.org/simple/importlib-metadata/
  Analyzing links from page https://pypi.org/simple/importlib-metadata/
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  Using version 0.20 (newest of versions: 0.20)
  Created temporary directory: /tmp/pip-unpack-xkitcs5d
  Downloading https://files.pythonhosted.org/packages/89/77/8bae90e4534a8fee1e0c3ee4890e2c7d215dccd7386cf2ec7555e529d6bb/importlib_metadata-0.20-py2.py3-none-any.whl
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  Saved /tmp/tmpj9fg698b/importlib_metadata-0.20-py2.py3-none-any.whl
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  Removed importlib-metadata==0.20 from https://files.pythonhosted.org/packages/89/77/8bae90e4534a8fee1e0c3ee4890e2c7d215dccd7386cf2ec7555e529d6bb/importlib_metadata-0.20-py2.py3-none-any.whl#sha256=9ff1b1c5a354142de080b8a4e9803e5d0d59283c93aed808617c787d16768375 from build tracker '/tmp/pip-req-tracker-28preqqc'
Skipping importlib-metadata, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-nipipism/importlib-metadata
Removed build tracker '/tmp/pip-req-tracker-28preqqc'