Created temporary directory: /tmp/pip-ephem-wheel-cache-r0f9fmlk
Created temporary directory: /tmp/pip-req-tracker-cfcx6l6v
Created requirements tracker '/tmp/pip-req-tracker-cfcx6l6v'
Created temporary directory: /tmp/pip-wheel-111mnfvq
Collecting pypi-flow==19.7.0
  1 location(s) to search for versions of pypi-flow:
  * https://pypi.org/simple/pypi-flow/
  Getting page https://pypi.org/simple/pypi-flow/
  Analyzing links from page https://pypi.org/simple/pypi-flow/
    Found link https://files.pythonhosted.org/packages/4c/40/1778ba9aac059341177c825d84b4712845e8d3e0c66ea17d68c896d0db91/pypi_flow-19.7.0-py3-none-any.whl#sha256=7a95e52cca5ec72529565cb21893ceccee419fe6269bf6e3b3f95f1b5f9c9d9f (from https://pypi.org/simple/pypi-flow/), version: 19.7.0
    Found link https://files.pythonhosted.org/packages/2a/c1/c826996907477638440ed7c4a6955ac3bb923888bda20de0acd6bd4d1212/pypi_flow-19.7.0.tar.gz#sha256=b83e0cacab16fe078e198f90bc40f0edc2bb22f6955144e582574d6cabca7d36 (from https://pypi.org/simple/pypi-flow/), version: 19.7.0
  Using version 19.7.0 (newest of versions: 19.7.0)
  Created temporary directory: /tmp/pip-unpack-k_jrrav0
  Downloading https://files.pythonhosted.org/packages/4c/40/1778ba9aac059341177c825d84b4712845e8d3e0c66ea17d68c896d0db91/pypi_flow-19.7.0-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/4c/40/1778ba9aac059341177c825d84b4712845e8d3e0c66ea17d68c896d0db91/pypi_flow-19.7.0-py3-none-any.whl#sha256=7a95e52cca5ec72529565cb21893ceccee419fe6269bf6e3b3f95f1b5f9c9d9f (from https://pypi.org/simple/pypi-flow/)
  Saved /tmp/tmp8ximej3m/pypi_flow-19.7.0-py3-none-any.whl
  Added pypi-flow==19.7.0 from https://files.pythonhosted.org/packages/4c/40/1778ba9aac059341177c825d84b4712845e8d3e0c66ea17d68c896d0db91/pypi_flow-19.7.0-py3-none-any.whl#sha256=7a95e52cca5ec72529565cb21893ceccee419fe6269bf6e3b3f95f1b5f9c9d9f to build tracker '/tmp/pip-req-tracker-cfcx6l6v'
  Removed pypi-flow==19.7.0 from https://files.pythonhosted.org/packages/4c/40/1778ba9aac059341177c825d84b4712845e8d3e0c66ea17d68c896d0db91/pypi_flow-19.7.0-py3-none-any.whl#sha256=7a95e52cca5ec72529565cb21893ceccee419fe6269bf6e3b3f95f1b5f9c9d9f from build tracker '/tmp/pip-req-tracker-cfcx6l6v'
Skipping pypi-flow, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-111mnfvq/pypi-flow
Removed build tracker '/tmp/pip-req-tracker-cfcx6l6v'