Created temporary directory: /tmp/pip-ephem-wheel-cache-fkgrlrch
Created temporary directory: /tmp/pip-req-tracker-denwqxda
Created requirements tracker '/tmp/pip-req-tracker-denwqxda'
Created temporary directory: /tmp/pip-wheel-5pu9vyl3
Collecting cattrs-3.8==0.9.1
  1 location(s) to search for versions of cattrs-3.8:
  * https://pypi.org/simple/cattrs-3-8/
  Getting page https://pypi.org/simple/cattrs-3-8/
  Analyzing links from page https://pypi.org/simple/cattrs-3-8/
    Found link https://files.pythonhosted.org/packages/3a/d7/8c9ab5f70a47b77736c9091f6dd2f0aa5d6bfa73277c27145bde5c683b09/cattrs-3.8-0.9.1.tar.gz#sha256=9d447cabe2abfb441e69d74359c999e7e133b0f0d83e93f86038e2c0136da79a (from https://pypi.org/simple/cattrs-3-8/), version: 0.9.1
    Found link https://files.pythonhosted.org/packages/08/c8/a81d58d09b1d69b54ab8b66ddf264a72a2027fac6c1a67505ac79fae3591/cattrs_3.8-0.9.1-py2.py3-none-any.whl#sha256=84c27c2af8886aa834044f52adf250f74a74db340315111f15308d6c519ddc6c (from https://pypi.org/simple/cattrs-3-8/), version: 0.9.1
  Using version 0.9.1 (newest of versions: 0.9.1)
  Created temporary directory: /tmp/pip-unpack-jp4rc6g3
  Downloading https://files.pythonhosted.org/packages/08/c8/a81d58d09b1d69b54ab8b66ddf264a72a2027fac6c1a67505ac79fae3591/cattrs_3.8-0.9.1-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/08/c8/a81d58d09b1d69b54ab8b66ddf264a72a2027fac6c1a67505ac79fae3591/cattrs_3.8-0.9.1-py2.py3-none-any.whl#sha256=84c27c2af8886aa834044f52adf250f74a74db340315111f15308d6c519ddc6c (from https://pypi.org/simple/cattrs-3-8/)
  Saved /tmp/tmpyz3b4jsv/cattrs_3.8-0.9.1-py2.py3-none-any.whl
  Added cattrs-3.8==0.9.1 from https://files.pythonhosted.org/packages/08/c8/a81d58d09b1d69b54ab8b66ddf264a72a2027fac6c1a67505ac79fae3591/cattrs_3.8-0.9.1-py2.py3-none-any.whl#sha256=84c27c2af8886aa834044f52adf250f74a74db340315111f15308d6c519ddc6c to build tracker '/tmp/pip-req-tracker-denwqxda'
  Removed cattrs-3.8==0.9.1 from https://files.pythonhosted.org/packages/08/c8/a81d58d09b1d69b54ab8b66ddf264a72a2027fac6c1a67505ac79fae3591/cattrs_3.8-0.9.1-py2.py3-none-any.whl#sha256=84c27c2af8886aa834044f52adf250f74a74db340315111f15308d6c519ddc6c from build tracker '/tmp/pip-req-tracker-denwqxda'
Skipping cattrs-3.8, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-5pu9vyl3/cattrs-3.8
Removed build tracker '/tmp/pip-req-tracker-denwqxda'