Created temporary directory: /tmp/pip-ephem-wheel-cache-6kdmgutm
Created temporary directory: /tmp/pip-req-tracker-ow15ps42
Created requirements tracker '/tmp/pip-req-tracker-ow15ps42'
Created temporary directory: /tmp/pip-wheel-t27jmrsk
Looking in indexes: https://pypi.python.org/simple
Collecting nailgun==0.31.0
  1 location(s) to search for versions of nailgun:
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  Getting page https://pypi.python.org/simple/nailgun/
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    Found link https://files.pythonhosted.org/packages/13/f2/a114b147bacc3dd153dd3458b856bb51f358392701f6c0cf3fd488f26587/nailgun-0.31.0.tar.gz#sha256=bf89f0dd6ef5a9278b94a532d8698b0b528efc0d5a9e46d805b366f34ab36a3f (from https://pypi.org/simple/nailgun/), version: 0.31.0
  Using version 0.31.0 (newest of versions: 0.31.0)
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  Downloading https://files.pythonhosted.org/packages/f6/7d/a683dff406be46528bd5e51243e32d55af9d08236fe96e0408f8ed8b274e/nailgun-0.31.0-py3-none-any.whl (58kB)
  Downloading from URL https://files.pythonhosted.org/packages/f6/7d/a683dff406be46528bd5e51243e32d55af9d08236fe96e0408f8ed8b274e/nailgun-0.31.0-py3-none-any.whl#sha256=784d62508c8446e3c7936d2460600707329e24d8ce2eeb65b793aaf70efd83ee (from https://pypi.org/simple/nailgun/)
  Saved /tmp/tmp_3l5gjie/nailgun-0.31.0-py3-none-any.whl
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  Removed nailgun==0.31.0 from https://files.pythonhosted.org/packages/f6/7d/a683dff406be46528bd5e51243e32d55af9d08236fe96e0408f8ed8b274e/nailgun-0.31.0-py3-none-any.whl#sha256=784d62508c8446e3c7936d2460600707329e24d8ce2eeb65b793aaf70efd83ee from build tracker '/tmp/pip-req-tracker-ow15ps42'
Skipping nailgun, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-t27jmrsk/nailgun
Removed build tracker '/tmp/pip-req-tracker-ow15ps42'