Collecting nstack==0.2
  1 location(s) to search for versions of nstack:
  * https://pypi.python.org/simple/nstack/
  Getting page https://pypi.python.org/simple/nstack/
  Analyzing links from page https://pypi.python.org/simple/nstack/
    Found link https://pypi.python.org/packages/1a/7d/e23ff3693d9bb6c9962c1bfa850334b2c898be41781eb34a6cea232839d9/nstack-0.2.tar.gz#md5=6046006bb27a681ed27fd003e40260ea (from https://pypi.python.org/simple/nstack/), version: 0.2
    Found link https://pypi.python.org/packages/93/8f/57007204915cf95cee831d5cd102ca262975977b411d8411b8757219820f/nstack-0.2-py2.py3-none-any.whl#md5=40f9be5a0caee7e601b30c47a33fc3c2 (from https://pypi.python.org/simple/nstack/), version: 0.2
    Found link https://pypi.python.org/packages/ee/a5/681e579db8720677fd87fac0ec85992bee912bf0e19986e346bc5b3c22d4/nstack-0.1.tar.gz#md5=a9ed2fa86ca11c4c26f50eafc049b295 (from https://pypi.python.org/simple/nstack/), version: 0.1
  Using version 0.2 (newest of versions: 0.2)
  Downloading nstack-0.2-py2.py3-none-any.whl
  Downloading from URL https://pypi.python.org/packages/93/8f/57007204915cf95cee831d5cd102ca262975977b411d8411b8757219820f/nstack-0.2-py2.py3-none-any.whl#md5=40f9be5a0caee7e601b30c47a33fc3c2 (from https://pypi.python.org/simple/nstack/)
  Saved /tmp/tmps4lwx_oz/nstack-0.2-py2.py3-none-any.whl
Skipping nstack, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-8y20000b/nstack