Nightly unit tests, linux #550

Job	Run time
Nightly 3.8 git-test-automl	20m 44s
Nightly 3.8 git-test-modelunderstanding	15m 5s
Nightly 3.8 git-test-other	11m 11s
Nightly 3.8 git-test-parallel	7m 57s
Nightly 3.8 git-test-prophet	6m 0s
Nightly 3.9 git-test-automl	16m 54s
Nightly 3.9 git-test-modelunderstanding	10m 12s
Nightly 3.9 git-test-other	15m 43s
Nightly 3.9 git-test-parallel	6m 31s
Nightly 3.9 git-test-prophet	6m 17s
	1h 56m 34s

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