Timple
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On Humble it succeeded at once (once the dependencies were in order). However the second build took 7 iterations.
On Iron, both times it took 4 iterations.
So it seems indeed like a non-consistency in the buildfarm were sometimes the runner is lucky in that it’s not competing with other runners.
I’m not sure if the “8gb should be a limit to guard for dev requirements” holds. My experience with ROS 2 in general is that memory usage is factors more than the same code in ROS 1. But this is just what it is, not sure if we want to enforce these specifications for the future to come. I just popped more memory in my laptop 