Collecting colcon-core==0.2.1
  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.org/simple/colcon-core/
    Found link https://files.pythonhosted.org/packages/b6/d9/bdca03414fe242f03ee9cbaac2da9276723ee23866f167bbf0f9d7f9857d/colcon-core-0.1.0.tar.gz#sha256=ba3bf0ef4dd07ff755fe03aebeb3d38da0f6fed05a52671dd7a4ce0708a7f804 (from https://pypi.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.1.0
    Found link https://files.pythonhosted.org/packages/f4/04/ec7caf58721c97fd03b9007bbee5f2d5dd6a3847ce2597127d3ecf6392b7/colcon_core-0.1.0-py3-none-any.whl#sha256=a2d645a67d99585c008b873df51fbbb25d040e7ee3add9342d0e2fb7d98bd527 (from https://pypi.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.1.0
    Found link https://files.pythonhosted.org/packages/7b/75/7e1d91c5af2d19872f03355b68bc81fc3c878e482ccf4085eda5b6bdc6c9/colcon-core-0.2.0.tar.gz#sha256=459c689907c8d2d0528aba5cfbcfd0b555f26c5f6180214bafe3e2c422febcf7 (from https://pypi.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.2.0
    Found link https://files.pythonhosted.org/packages/0f/4e/f9104e313ac8a65cc7ae5ac8aecd315afc785ac87cb51d81988b169e2264/colcon_core-0.2.0-py3-none-any.whl#sha256=e942c9f982d4cb01707783e653fc2930e7c0ec8028608d3f89700f147e11ca34 (from https://pypi.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.2.0
    Found link https://files.pythonhosted.org/packages/87/66/0ecb7d017f4ff29da599879c9484ed79862b20c233991438b552ffee9fff/colcon-core-0.2.1.tar.gz#sha256=efeb80415d8128535fbf4af3048b633fe7c73fe9c936d8c0a41343162400c1f1 (from https://pypi.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.2.1
    Found link https://files.pythonhosted.org/packages/9a/99/806069dc2822a7507b66263ad0ff667e8fcca400611c16fe03b6387a1be5/colcon_core-0.2.1-py3-none-any.whl#sha256=c3dac47d70deb1a6af8ca277ba23cf2efdf530a8ebe82c6c7cd065e4f076c00a (from https://pypi.org/simple/colcon-core/) (requires-python:>=3.5), version: 0.2.1
  Using version 0.2.1 (newest of versions: 0.2.1)
  Downloading https://files.pythonhosted.org/packages/9a/99/806069dc2822a7507b66263ad0ff667e8fcca400611c16fe03b6387a1be5/colcon_core-0.2.1-py3-none-any.whl (88kB)
  Downloading from URL https://files.pythonhosted.org/packages/9a/99/806069dc2822a7507b66263ad0ff667e8fcca400611c16fe03b6387a1be5/colcon_core-0.2.1-py3-none-any.whl#sha256=c3dac47d70deb1a6af8ca277ba23cf2efdf530a8ebe82c6c7cd065e4f076c00a (from https://pypi.org/simple/colcon-core/) (requires-python:>=3.5)
  Saved /tmp/tmptu4bagbf/colcon_core-0.2.1-py3-none-any.whl
Skipping colcon-core, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-ktb0syr2/colcon-core