Created temporary directory: /tmp/pip-ephem-wheel-cache-4ooe3zd5
Created temporary directory: /tmp/pip-req-tracker-hapq2kw9
Created requirements tracker '/tmp/pip-req-tracker-hapq2kw9'
Created temporary directory: /tmp/pip-wheel-8zyj4jns
Collecting erfc==0.1.0
  1 location(s) to search for versions of erfc:
  * https://pypi.org/simple/erfc/
  Getting page https://pypi.org/simple/erfc/
  Analyzing links from page https://pypi.org/simple/erfc/
    Found link https://files.pythonhosted.org/packages/4b/98/9a8ef6e343b24d9078e8a0030b6e697f981ebbf19ade7d3f4d5be8cba07e/erfc-0.1.0-py3-none-any.whl#sha256=055faa2deef56c2eebe0883296168825333d60d3fea7243368f3d8cf0362d6fc (from https://pypi.org/simple/erfc/), version: 0.1.0
    Found link https://files.pythonhosted.org/packages/f9/95/97e2c7e47ec369146a48f5cb6a70694e31451d3fb04103067ca811ae00d2/erfc-0.1.0.tar.gz#sha256=bada6f11e8e12b05f2b2fac017a1f1c61dcf0d508f74a395b2cf56255a033d81 (from https://pypi.org/simple/erfc/), version: 0.1.0
  Using version 0.1.0 (newest of versions: 0.1.0)
  Created temporary directory: /tmp/pip-unpack-inj8xea5
  Downloading https://files.pythonhosted.org/packages/4b/98/9a8ef6e343b24d9078e8a0030b6e697f981ebbf19ade7d3f4d5be8cba07e/erfc-0.1.0-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/4b/98/9a8ef6e343b24d9078e8a0030b6e697f981ebbf19ade7d3f4d5be8cba07e/erfc-0.1.0-py3-none-any.whl#sha256=055faa2deef56c2eebe0883296168825333d60d3fea7243368f3d8cf0362d6fc (from https://pypi.org/simple/erfc/)
  Saved /tmp/tmpxlsgm9bl/erfc-0.1.0-py3-none-any.whl
  Added erfc==0.1.0 from https://files.pythonhosted.org/packages/4b/98/9a8ef6e343b24d9078e8a0030b6e697f981ebbf19ade7d3f4d5be8cba07e/erfc-0.1.0-py3-none-any.whl#sha256=055faa2deef56c2eebe0883296168825333d60d3fea7243368f3d8cf0362d6fc to build tracker '/tmp/pip-req-tracker-hapq2kw9'
  Removed erfc==0.1.0 from https://files.pythonhosted.org/packages/4b/98/9a8ef6e343b24d9078e8a0030b6e697f981ebbf19ade7d3f4d5be8cba07e/erfc-0.1.0-py3-none-any.whl#sha256=055faa2deef56c2eebe0883296168825333d60d3fea7243368f3d8cf0362d6fc from build tracker '/tmp/pip-req-tracker-hapq2kw9'
Skipping erfc, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-8zyj4jns/erfc
Removed build tracker '/tmp/pip-req-tracker-hapq2kw9'