Nightly unit tests, linux #491

Job	Run time
Nightly 3.8 git-test-automl	18m 48s
Nightly 3.8 git-test-modelunderstanding	11m 37s
Nightly 3.8 git-test-other	12m 21s
Nightly 3.8 git-test-parallel	6m 6s
Nightly 3.8 git-test-prophet	7m 3s
Nightly 3.9 git-test-automl	20m 52s
Nightly 3.9 git-test-modelunderstanding	11m 55s
Nightly 3.9 git-test-other	14m 59s
Nightly 3.9 git-test-parallel	5m 46s
Nightly 3.9 git-test-prophet	7m 31s
	1h 56m 58s

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