memory_gc-itest flakiness over recent revisions

68f10dd41067059260a5fb5c725b178b69c38aed (Failed 0 / 30)

3a5468b651ad64ac6e09f94bae9fffde09c4211d (Failed 0 / 4)

07148adc8b1ea21ab089857e39de46f7fa68ddab (Failed 0 / 12)