Ok I believe I have figured it out. Since been using the beta version and now moved to the ardent debian version. After installation, when I moved to the ament tutorial: wget https://raw.githubusercontent.com/ros2/ros2/master/ros2.repos vcs import ~/ros2_ws/src < ros2.repos I ran those again. That is why it was creating duplicate probably. Just realised it is clearly mentioned there: _To start off we need to setup an underlay **without any of ROS2 installed**._ My apologies @dirk-thomas and that is great that I don't need to go through the 2 hours of build and test time to set up my ros2. --- [Visit Topic](https://discourse.ros.org/t/ament-build-test-failed/3398/19) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: