Created temporary directory: /tmp/pip-ephem-wheel-cache-w9co23q_
Created temporary directory: /tmp/pip-req-tracker-zfpa0bod
Created requirements tracker '/tmp/pip-req-tracker-zfpa0bod'
Created temporary directory: /tmp/pip-wheel-3jjmu4_v
Looking in indexes: https://pypi.python.org/simple
Collecting ballet==0.4.1
  1 location(s) to search for versions of ballet:
  * https://pypi.python.org/simple/ballet/
  Getting page https://pypi.python.org/simple/ballet/
  Analyzing links from page https://pypi.org/simple/ballet/
    Found link https://files.pythonhosted.org/packages/b9/89/76ff0d3a7a235cd1cb778e079be8a30cdab0bc08b6c958e049eebdf1639e/ballet-0.4.0-py2.py3-none-any.whl#sha256=1c502196d8a883149b21a43545ebaf19480848d1cd5153a29da38f5ba3eec658 (from https://pypi.org/simple/ballet/) (requires-python:>=3.4), version: 0.4.0
    Found link https://files.pythonhosted.org/packages/c2/b0/a2cc4a6da42b4bf7916e690ae860533e026b88d5c6e1b39038997586a6ad/ballet-0.4.0.tar.gz#sha256=3631d1a7191a2015ab2cb9a5499db4d3f12b6fefae6f17c10c049bcb3c5a3287 (from https://pypi.org/simple/ballet/) (requires-python:>=3.4), version: 0.4.0
    Found link https://files.pythonhosted.org/packages/1c/35/e7261876c327c353cb186c5c09596157fbb157e26969a83f1f1be701d719/ballet-0.4.1-py2.py3-none-any.whl#sha256=93811e45e6862bdbd28bb95184ec160b47286563f50aff5f26ba3efd12c947ed (from https://pypi.org/simple/ballet/) (requires-python:>=3.4), version: 0.4.1
    Found link https://files.pythonhosted.org/packages/18/58/3652a6686a64f235a3dc46a4216a212b3c3dc217bd1d3422b27af0c4e9b2/ballet-0.4.1.tar.gz#sha256=8fb293b538cc5fa75f7d0090bdb5db633b56eda05d0e5523a2da96d5de374f4b (from https://pypi.org/simple/ballet/) (requires-python:>=3.4), version: 0.4.1
  Using version 0.4.1 (newest of versions: 0.4.1)
  Created temporary directory: /tmp/pip-unpack-thmz3os_
  Downloading https://files.pythonhosted.org/packages/1c/35/e7261876c327c353cb186c5c09596157fbb157e26969a83f1f1be701d719/ballet-0.4.1-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/1c/35/e7261876c327c353cb186c5c09596157fbb157e26969a83f1f1be701d719/ballet-0.4.1-py2.py3-none-any.whl#sha256=93811e45e6862bdbd28bb95184ec160b47286563f50aff5f26ba3efd12c947ed (from https://pypi.org/simple/ballet/) (requires-python:>=3.4)
  Saved /tmp/tmpajd6evvi/ballet-0.4.1-py2.py3-none-any.whl
  Added ballet==0.4.1 from https://files.pythonhosted.org/packages/1c/35/e7261876c327c353cb186c5c09596157fbb157e26969a83f1f1be701d719/ballet-0.4.1-py2.py3-none-any.whl#sha256=93811e45e6862bdbd28bb95184ec160b47286563f50aff5f26ba3efd12c947ed to build tracker '/tmp/pip-req-tracker-zfpa0bod'
  Removed ballet==0.4.1 from https://files.pythonhosted.org/packages/1c/35/e7261876c327c353cb186c5c09596157fbb157e26969a83f1f1be701d719/ballet-0.4.1-py2.py3-none-any.whl#sha256=93811e45e6862bdbd28bb95184ec160b47286563f50aff5f26ba3efd12c947ed from build tracker '/tmp/pip-req-tracker-zfpa0bod'
Skipping ballet, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-3jjmu4_v/ballet
Removed build tracker '/tmp/pip-req-tracker-zfpa0bod'