[ros-users] [Discourse.ros.org] [Next Generation ROS] Ament Build -test failed

Dirk Thomas ros.discourse at gmail.com
Sat Jan 20 21:57:56 UTC 2018

The error message says:

> `pytest.py`: unrecognized arguments: -o cache_dir=...

I assume you are using an older version of `pytest` since this command line argument was only added in version [3.2.0](https://docs.pytest.org/en/latest/changelog.html#pytest-3-2-0-2017-07-30).

Please check that you have followed the [instructions](https://github.com/ros2/ros2/wiki/Linux-Development-Setup#how-to-setup-the-development-environment) which mention to install the latest version via pip.

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