Collecting trefoil==0.3.0
  1 location(s) to search for versions of trefoil:
  * https://pypi.python.org/simple/trefoil/
  Getting page https://pypi.python.org/simple/trefoil/
  Analyzing links from page https://pypi.org/simple/trefoil/
    Found link https://files.pythonhosted.org/packages/8f/f0/809ac7d3570238244dc7292be66cc497b3785c8454a6e666c1dbaba8b7ad/trefoil-0.3.0-py2.py3-none-any.whl#sha256=d1e0a37ce86bfcca9b70185d26922bd4920f83617d1b8716a15df01ae78b6dbc (from https://pypi.org/simple/trefoil/), version: 0.3.0
    Found link https://files.pythonhosted.org/packages/d1/a1/2d774244716cb6b5716712f91679260d77a444cfa0dfeecc3ccfb5166aa8/trefoil-0.3.0.tar.gz#sha256=12724644caf70557c45d89749b44ee30b4668d02213e0ef4249c0ac07ce1ddaa (from https://pypi.org/simple/trefoil/), version: 0.3.0
  Using version 0.3.0 (newest of versions: 0.3.0)
  Downloading https://files.pythonhosted.org/packages/8f/f0/809ac7d3570238244dc7292be66cc497b3785c8454a6e666c1dbaba8b7ad/trefoil-0.3.0-py2.py3-none-any.whl (71kB)
  Downloading from URL https://files.pythonhosted.org/packages/8f/f0/809ac7d3570238244dc7292be66cc497b3785c8454a6e666c1dbaba8b7ad/trefoil-0.3.0-py2.py3-none-any.whl#sha256=d1e0a37ce86bfcca9b70185d26922bd4920f83617d1b8716a15df01ae78b6dbc (from https://pypi.org/simple/trefoil/)
  Saved /tmp/tmpotn0kk42/trefoil-0.3.0-py2.py3-none-any.whl
Skipping trefoil, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-iiaqtxox/trefoil