Collecting url_checker==1.2.0
  1 location(s) to search for versions of url-checker:
  * https://pypi.python.org/simple/url-checker/
  Getting page https://pypi.python.org/simple/url-checker/
  Analyzing links from page https://pypi.org/simple/url-checker/
    Found link https://files.pythonhosted.org/packages/28/fb/c3605c9f838a0e4e3a51df42f0cf5d1d5eef88b0c77ad03d1e48a1637896/url_checker-1.0.0-py2.py3-none-any.whl#sha256=1c23b9dc77cefb161417e8f7112f950ccf398d9470162ad9127129461e7070d3 (from https://pypi.org/simple/url-checker/), version: 1.0.0
    Found link https://files.pythonhosted.org/packages/11/4f/1be6bd520493c20d2d984b6dda882239705f5a1492b78eeb723969e7ea5d/url_checker-1.2.0-py2.py3-none-any.whl#sha256=88723cd0f9180f96003264b2b187396d7c61be756739d95f6c264e3db336f18c (from https://pypi.org/simple/url-checker/), version: 1.2.0
    Found link https://files.pythonhosted.org/packages/20/46/89ba5a1c587ce8b30bd5db5d5293fb1e4e0663092af22d89dc3622544ee4/url_checker-1.2.0.tar.gz#sha256=ec2f07209db741625855b2c0557e9dbf2bbdbf22d6c26c169d4a9d43ac79a5a5 (from https://pypi.org/simple/url-checker/), version: 1.2.0
  Using version 1.2.0 (newest of versions: 1.2.0)
  Downloading https://files.pythonhosted.org/packages/11/4f/1be6bd520493c20d2d984b6dda882239705f5a1492b78eeb723969e7ea5d/url_checker-1.2.0-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/11/4f/1be6bd520493c20d2d984b6dda882239705f5a1492b78eeb723969e7ea5d/url_checker-1.2.0-py2.py3-none-any.whl#sha256=88723cd0f9180f96003264b2b187396d7c61be756739d95f6c264e3db336f18c (from https://pypi.org/simple/url-checker/)
  Saved /tmp/tmp_7qr5lv3/url_checker-1.2.0-py2.py3-none-any.whl
Skipping url-checker, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-fvg78xci/url-checker