Created temporary directory: /tmp/pip-ephem-wheel-cache-cs6o5ucp
Created temporary directory: /tmp/pip-req-tracker-l2qj4j08
Created requirements tracker '/tmp/pip-req-tracker-l2qj4j08'
Created temporary directory: /tmp/pip-wheel-6aqqeysw
Looking in indexes: https://pypi.python.org/simple
Collecting py==1.6.0
  1 location(s) to search for versions of py:
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  Getting page https://pypi.python.org/simple/py/
  Analyzing links from page https://pypi.org/simple/py/
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Skipping py, due to already being wheel.
Cleaning up...
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Removed build tracker '/tmp/pip-req-tracker-l2qj4j08'