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That means that the workspace in ~/catkin_ws/
was sourced when you built the workspace in ~/catkin_ws2/
. You'll have to clear the build, devel, and install folders of ~/catkin_ws2/
and in a new terminal (without sourcing stuff in your ~/.bashrc
) source /opt/ros/indigo/setup.bash
and then build ~/catkin_ws2/
with catkin_make
.