Created temporary directory: /tmp/pip-ephem-wheel-cache-ctjxoxdg
Created temporary directory: /tmp/pip-req-tracker-6jp4k4fp
Created requirements tracker '/tmp/pip-req-tracker-6jp4k4fp'
Created temporary directory: /tmp/pip-wheel-d769_dg2
Collecting subclass-register==1.0.0
  1 location(s) to search for versions of subclass-register:
  * https://pypi.org/simple/subclass-register/
  Getting page https://pypi.org/simple/subclass-register/
  Analyzing links from page https://pypi.org/simple/subclass-register/
    Found link https://files.pythonhosted.org/packages/6e/ba/769dcac90f5a7466903cd5da3e561a8e9b7f7cc308128c68a10c17cf110a/subclass-register-1.0.0.tar.gz#sha256=cb619c8f4efdfbac55d3496d773837a4de6fd2db308fdcc36743b60645d7185d (from https://pypi.org/simple/subclass-register/), version: 1.0.0
    Found link https://files.pythonhosted.org/packages/52/60/8ca3c22466c65fa83c194cc422c3f15d1333d885f71cd7cb90293e445841/subclass_register-1.0.0-py3-none-any.whl#sha256=693d4a86c016f519c207dde2ad222a732691f8e7c5748afd2e89b467fbf34fdd (from https://pypi.org/simple/subclass-register/), version: 1.0.0
  Using version 1.0.0 (newest of versions: 1.0.0)
  Created temporary directory: /tmp/pip-unpack-758is8uf
  Downloading https://files.pythonhosted.org/packages/52/60/8ca3c22466c65fa83c194cc422c3f15d1333d885f71cd7cb90293e445841/subclass_register-1.0.0-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/52/60/8ca3c22466c65fa83c194cc422c3f15d1333d885f71cd7cb90293e445841/subclass_register-1.0.0-py3-none-any.whl#sha256=693d4a86c016f519c207dde2ad222a732691f8e7c5748afd2e89b467fbf34fdd (from https://pypi.org/simple/subclass-register/)
  Saved /tmp/tmpirbf985u/subclass_register-1.0.0-py3-none-any.whl
  Added subclass-register==1.0.0 from https://files.pythonhosted.org/packages/52/60/8ca3c22466c65fa83c194cc422c3f15d1333d885f71cd7cb90293e445841/subclass_register-1.0.0-py3-none-any.whl#sha256=693d4a86c016f519c207dde2ad222a732691f8e7c5748afd2e89b467fbf34fdd to build tracker '/tmp/pip-req-tracker-6jp4k4fp'
  Removed subclass-register==1.0.0 from https://files.pythonhosted.org/packages/52/60/8ca3c22466c65fa83c194cc422c3f15d1333d885f71cd7cb90293e445841/subclass_register-1.0.0-py3-none-any.whl#sha256=693d4a86c016f519c207dde2ad222a732691f8e7c5748afd2e89b467fbf34fdd from build tracker '/tmp/pip-req-tracker-6jp4k4fp'
Skipping subclass-register, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-d769_dg2/subclass-register
Removed build tracker '/tmp/pip-req-tracker-6jp4k4fp'