Created temporary directory: /tmp/pip-ephem-wheel-cache-bydhlp71
Created temporary directory: /tmp/pip-req-tracker-kd6pkde6
Created requirements tracker '/tmp/pip-req-tracker-kd6pkde6'
Created temporary directory: /tmp/pip-wheel-x61pyy2c
Collecting regref==2.1.1
  1 location(s) to search for versions of regref:
  * https://pypi.org/simple/regref/
  Getting page https://pypi.org/simple/regref/
  Analyzing links from page https://pypi.org/simple/regref/
    Found link https://files.pythonhosted.org/packages/02/d3/2483b7f9f5e1140eacf738136edf5a15e58b49e9a39f75fb32c569128a81/regref-2.1.1-py3-none-any.whl#sha256=e943a49f6d9655f45278139ab05a355b4f529dbdb88c1be9941a13ff7bc95409 (from https://pypi.org/simple/regref/), version: 2.1.1
    Found link https://files.pythonhosted.org/packages/57/6b/138735e7ff781d4bc1a8743a80a6679c1e939b3a115d73cd3f2ddc3795ce/regref-2.1.1.tar.gz#sha256=2b68fc0fc6a046c3d52b8eb93127e5b1bff91d96d4cb7d1ee63ba4d674c7dd30 (from https://pypi.org/simple/regref/), version: 2.1.1
  Using version 2.1.1 (newest of versions: 2.1.1)
  Created temporary directory: /tmp/pip-unpack-3y8to8m7
  Downloading https://files.pythonhosted.org/packages/02/d3/2483b7f9f5e1140eacf738136edf5a15e58b49e9a39f75fb32c569128a81/regref-2.1.1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/02/d3/2483b7f9f5e1140eacf738136edf5a15e58b49e9a39f75fb32c569128a81/regref-2.1.1-py3-none-any.whl#sha256=e943a49f6d9655f45278139ab05a355b4f529dbdb88c1be9941a13ff7bc95409 (from https://pypi.org/simple/regref/)
  Saved /tmp/tmpkl67mk3g/regref-2.1.1-py3-none-any.whl
  Added regref==2.1.1 from https://files.pythonhosted.org/packages/02/d3/2483b7f9f5e1140eacf738136edf5a15e58b49e9a39f75fb32c569128a81/regref-2.1.1-py3-none-any.whl#sha256=e943a49f6d9655f45278139ab05a355b4f529dbdb88c1be9941a13ff7bc95409 to build tracker '/tmp/pip-req-tracker-kd6pkde6'
  Removed regref==2.1.1 from https://files.pythonhosted.org/packages/02/d3/2483b7f9f5e1140eacf738136edf5a15e58b49e9a39f75fb32c569128a81/regref-2.1.1-py3-none-any.whl#sha256=e943a49f6d9655f45278139ab05a355b4f529dbdb88c1be9941a13ff7bc95409 from build tracker '/tmp/pip-req-tracker-kd6pkde6'
Skipping regref, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-x61pyy2c/regref
Removed build tracker '/tmp/pip-req-tracker-kd6pkde6'