Collecting metabolinks==0.51
  1 location(s) to search for versions of metabolinks:
  * https://pypi.python.org/simple/metabolinks/
  Getting page https://pypi.python.org/simple/metabolinks/
  Analyzing links from page https://pypi.org/simple/metabolinks/
    Found link https://files.pythonhosted.org/packages/b9/35/b6b1bb1b93cdc562a051bc891d464b4251596c59892af48d93b31462534f/metabolinks-0.51-py2.py3-none-any.whl#sha256=3525587076132952b90d68f9cca430584e982ac7c43e148dc2418fed2be28e3c (from https://pypi.org/simple/metabolinks/), version: 0.51
    Found link https://files.pythonhosted.org/packages/99/88/7d808ae3a058da3f06cce1d4b93bbc42fb30e7289dc444b93a09742dd0a6/metabolinks-0.51.tar.gz#sha256=14ffc139faa5a367989bb43510f50198eb6c89b3e4efc99c7012fdde53f905b4 (from https://pypi.org/simple/metabolinks/), version: 0.51
  Using version 0.51 (newest of versions: 0.51)
  Downloading https://files.pythonhosted.org/packages/b9/35/b6b1bb1b93cdc562a051bc891d464b4251596c59892af48d93b31462534f/metabolinks-0.51-py2.py3-none-any.whl (117kB)
  Downloading from URL https://files.pythonhosted.org/packages/b9/35/b6b1bb1b93cdc562a051bc891d464b4251596c59892af48d93b31462534f/metabolinks-0.51-py2.py3-none-any.whl#sha256=3525587076132952b90d68f9cca430584e982ac7c43e148dc2418fed2be28e3c (from https://pypi.org/simple/metabolinks/)
  Saved /tmp/tmpc6gh9fdu/metabolinks-0.51-py2.py3-none-any.whl
Skipping metabolinks, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-uk59vgh5/metabolinks