Nightly unit tests, linux #516

Job	Run time
Nightly 3.8 git-test-automl	20m 46s
Nightly 3.8 git-test-modelunderstanding	12m 31s
Nightly 3.8 git-test-other	16m 18s
Nightly 3.8 git-test-parallel	6m 49s
Nightly 3.8 git-test-prophet	11m 13s
Nightly 3.9 git-test-automl	23m 34s
Nightly 3.9 git-test-modelunderstanding	12m 41s
Nightly 3.9 git-test-other	13m 10s
Nightly 3.9 git-test-parallel	6m 33s
Nightly 3.9 git-test-prophet	9m 47s
	2h 13m 22s

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