Collecting foldr2==0.1
  1 location(s) to search for versions of foldr2:
  * https://pypi.python.org/simple/foldr2/
  Getting page https://pypi.python.org/simple/foldr2/
  Analyzing links from page https://pypi.org/simple/foldr2/
    Found link https://files.pythonhosted.org/packages/33/ca/b70c8ce03a87b93bc56ace6b76747678262f2acc6db5e3387ec60188da70/foldr2-0.1-py2.py3-none-any.whl#sha256=6d51824df3774ed0fab5264e5b7c8dbe3b56523782bf00258f3934cadf903a5d (from https://pypi.org/simple/foldr2/), version: 0.1
    Found link https://files.pythonhosted.org/packages/1c/33/7906a4fec5070a399a72c641fd38d31f2cd4559546c072bf1211af8447b6/foldr2-0.1.tar.gz#sha256=57d195d82939a8ee00eac81bf526e397d92c56eafd99b3494d74912de5b63633 (from https://pypi.org/simple/foldr2/), version: 0.1
  Using version 0.1 (newest of versions: 0.1)
  Downloading https://files.pythonhosted.org/packages/33/ca/b70c8ce03a87b93bc56ace6b76747678262f2acc6db5e3387ec60188da70/foldr2-0.1-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/33/ca/b70c8ce03a87b93bc56ace6b76747678262f2acc6db5e3387ec60188da70/foldr2-0.1-py2.py3-none-any.whl#sha256=6d51824df3774ed0fab5264e5b7c8dbe3b56523782bf00258f3934cadf903a5d (from https://pypi.org/simple/foldr2/)
  Saved /tmp/tmpi4yb3uds/foldr2-0.1-py2.py3-none-any.whl
Skipping foldr2, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-z05ejv27/foldr2