Collecting colcon-core==0.1.0
  1 location(s) to search for versions of colcon-core:
  * https://pypi.python.org/simple/colcon-core/
  Getting page https://pypi.python.org/simple/colcon-core/
  Analyzing links from page https://pypi.python.org/simple/colcon-core/
    Found link https://pypi.python.org/packages/b6/d9/bdca03414fe242f03ee9cbaac2da9276723ee23866f167bbf0f9d7f9857d/colcon-core-0.1.0.tar.gz#md5=8ca61b6fd57ceb394221abfd7d7edbe3 (from https://pypi.python.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.1.0
    Found link https://pypi.python.org/packages/f4/04/ec7caf58721c97fd03b9007bbee5f2d5dd6a3847ce2597127d3ecf6392b7/colcon_core-0.1.0-py3-none-any.whl#md5=d91995bfbd8dae8725d6690964a54063 (from https://pypi.python.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.1.0
  Using version 0.1.0 (newest of versions: 0.1.0)
  Downloading colcon_core-0.1.0-py3-none-any.whl (81kB)
  Downloading from URL https://pypi.python.org/packages/f4/04/ec7caf58721c97fd03b9007bbee5f2d5dd6a3847ce2597127d3ecf6392b7/colcon_core-0.1.0-py3-none-any.whl#md5=d91995bfbd8dae8725d6690964a54063 (from https://pypi.python.org/simple/colcon-core/) (requires-python:>=3.5)
  Saved /tmp/tmpqilfiyaw/colcon_core-0.1.0-py3-none-any.whl
Skipping colcon-core, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-hhtxo7bf/colcon-core