Created temporary directory: /tmp/pip-ephem-wheel-cache-2_yokpjj
Created temporary directory: /tmp/pip-req-tracker-npz_e3bm
Created requirements tracker '/tmp/pip-req-tracker-npz_e3bm'
Created temporary directory: /tmp/pip-wheel-945vb0on
Collecting yaf==0.0.1
  1 location(s) to search for versions of yaf:
  * https://pypi.org/simple/yaf/
  Getting page https://pypi.org/simple/yaf/
  Analyzing links from page https://pypi.org/simple/yaf/
    Found link https://files.pythonhosted.org/packages/60/04/611b423154d676872a94543fb588ee241b51164084375cb7026c1c61825a/yaf-0.0.1-py3-none-any.whl#sha256=72e3e97774817f6874cdb3e992ce4e09c334da1cd7857286d3cf00aa84971038 (from https://pypi.org/simple/yaf/), version: 0.0.1
    Found link https://files.pythonhosted.org/packages/fe/2b/39aa1a8d88cb241219c5257e994d396e8412efc3a89150b6bf6d1568283f/yaf-0.0.1.tar.gz#sha256=91386125c143acb258e21dc6abe5c9fdfd959e707817999596e1fe4bfc29e2b8 (from https://pypi.org/simple/yaf/), version: 0.0.1
  Using version 0.0.1 (newest of versions: 0.0.1)
  Created temporary directory: /tmp/pip-unpack-1g9j0_if
  Downloading https://files.pythonhosted.org/packages/60/04/611b423154d676872a94543fb588ee241b51164084375cb7026c1c61825a/yaf-0.0.1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/60/04/611b423154d676872a94543fb588ee241b51164084375cb7026c1c61825a/yaf-0.0.1-py3-none-any.whl#sha256=72e3e97774817f6874cdb3e992ce4e09c334da1cd7857286d3cf00aa84971038 (from https://pypi.org/simple/yaf/)
  Saved /tmp/tmprljqytk0/yaf-0.0.1-py3-none-any.whl
  Added yaf==0.0.1 from https://files.pythonhosted.org/packages/60/04/611b423154d676872a94543fb588ee241b51164084375cb7026c1c61825a/yaf-0.0.1-py3-none-any.whl#sha256=72e3e97774817f6874cdb3e992ce4e09c334da1cd7857286d3cf00aa84971038 to build tracker '/tmp/pip-req-tracker-npz_e3bm'
  Removed yaf==0.0.1 from https://files.pythonhosted.org/packages/60/04/611b423154d676872a94543fb588ee241b51164084375cb7026c1c61825a/yaf-0.0.1-py3-none-any.whl#sha256=72e3e97774817f6874cdb3e992ce4e09c334da1cd7857286d3cf00aa84971038 from build tracker '/tmp/pip-req-tracker-npz_e3bm'
Skipping yaf, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-945vb0on/yaf
Removed build tracker '/tmp/pip-req-tracker-npz_e3bm'