ROS buildfarm CI fails with "UNSTABLE" status?
E.g. in this PR ROS buildfarm CI failed but I cannot find anything actually failed in its CI output, where the build result is unstable
. While I understand that unstable is not ideal at all, I'm confused if it's still in releaseable condition or not. Particularly in the case of the same PR, ROS pre-release test passed (its result on Travis CI).