Created temporary directory: /tmp/pip-ephem-wheel-cache-mlz2u78w
Created temporary directory: /tmp/pip-req-tracker-fhlr11gc
Created requirements tracker '/tmp/pip-req-tracker-fhlr11gc'
Created temporary directory: /tmp/pip-wheel-2ykrrh_m
Collecting zk==0.5.6
  1 location(s) to search for versions of zk:
  * https://pypi.org/simple/zk/
  Getting page https://pypi.org/simple/zk/
  Analyzing links from page https://pypi.org/simple/zk/
    Found link https://files.pythonhosted.org/packages/b7/28/b607c779681583a36063c21de12a073de40e3d2b6243706d20b96efac527/zk-0.5.3.tar.gz#sha256=cf5b947ecc118d0e40194fcb47bd7caf19585c014229a25033e66f9883c4d29d (from https://pypi.org/simple/zk/), version: 0.5.3
    Found link https://files.pythonhosted.org/packages/b3/9a/7fb1045f9a8565ac7ba97113b3b5ba5802a081c6906ec223d68872bc1720/zk-0.5.6-py3-none-any.whl#sha256=407192851b1fb3287b84f6fee884c6f467bd12cda783cbb4921cd170e06eb89f (from https://pypi.org/simple/zk/), version: 0.5.6
    Found link https://files.pythonhosted.org/packages/88/f9/cb3bba69ddeacdf85618c85512520e1137c5cde30076022ff6f65d1c88bb/zk-0.5.6.tar.gz#sha256=dc46f552ceff4f1f21c0438f580e43ab4e6e5f616520ed1a6ebcfbad47c20cf1 (from https://pypi.org/simple/zk/), version: 0.5.6
  Using version 0.5.6 (newest of versions: 0.5.6)
  Created temporary directory: /tmp/pip-unpack-pgk9so3y
  Downloading https://files.pythonhosted.org/packages/b3/9a/7fb1045f9a8565ac7ba97113b3b5ba5802a081c6906ec223d68872bc1720/zk-0.5.6-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/b3/9a/7fb1045f9a8565ac7ba97113b3b5ba5802a081c6906ec223d68872bc1720/zk-0.5.6-py3-none-any.whl#sha256=407192851b1fb3287b84f6fee884c6f467bd12cda783cbb4921cd170e06eb89f (from https://pypi.org/simple/zk/)
  Saved /tmp/tmpp0zpr4o4/zk-0.5.6-py3-none-any.whl
  Added zk==0.5.6 from https://files.pythonhosted.org/packages/b3/9a/7fb1045f9a8565ac7ba97113b3b5ba5802a081c6906ec223d68872bc1720/zk-0.5.6-py3-none-any.whl#sha256=407192851b1fb3287b84f6fee884c6f467bd12cda783cbb4921cd170e06eb89f to build tracker '/tmp/pip-req-tracker-fhlr11gc'
  Removed zk==0.5.6 from https://files.pythonhosted.org/packages/b3/9a/7fb1045f9a8565ac7ba97113b3b5ba5802a081c6906ec223d68872bc1720/zk-0.5.6-py3-none-any.whl#sha256=407192851b1fb3287b84f6fee884c6f467bd12cda783cbb4921cd170e06eb89f from build tracker '/tmp/pip-req-tracker-fhlr11gc'
Skipping zk, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-2ykrrh_m/zk
Removed build tracker '/tmp/pip-req-tracker-fhlr11gc'