Collecting petrone==0.1.1
  1 location(s) to search for versions of petrone:
  * https://pypi.python.org/simple/petrone/
  Getting page https://pypi.python.org/simple/petrone/
  Analyzing links from page https://pypi.python.org/simple/petrone/
    Found link https://pypi.python.org/packages/61/b3/0f6cb2dd94ecee5f028b50da52dd7143b81a97af89406d4cfd6dbab24051/petrone-0.1.1-py3-none-any.whl#md5=c088d1163770efdfb9cba586023eac9e (from https://pypi.python.org/simple/petrone/), version: 0.1.1
    Found link https://pypi.python.org/packages/b8/47/b49d55015f56457e382377b3ec01718859d683d13dc69b30ac84ca468afd/petrone-0.1.1.tar.gz#md5=c7248f338d81e5191474f5f70809b200 (from https://pypi.python.org/simple/petrone/), version: 0.1.1
  Using version 0.1.1 (newest of versions: 0.1.1)
  Downloading petrone-0.1.1-py3-none-any.whl
  Downloading from URL https://pypi.python.org/packages/61/b3/0f6cb2dd94ecee5f028b50da52dd7143b81a97af89406d4cfd6dbab24051/petrone-0.1.1-py3-none-any.whl#md5=c088d1163770efdfb9cba586023eac9e (from https://pypi.python.org/simple/petrone/)
  Saved /tmp/tmp0r1197in/petrone-0.1.1-py3-none-any.whl
Skipping petrone, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-t19izlzr/petrone