Nightly unit tests, linux #618

Job	Run time
Nightly 3.8 git-test-automl	16m 48s
Nightly 3.8 git-test-modelunderstanding	10m 3s
Nightly 3.8 git-test-other	9m 25s
Nightly 3.8 git-test-parallel	4m 34s
Nightly 3.8 git-test-prophet	6m 15s
Nightly 3.9 git-test-automl	16m 54s
Nightly 3.9 git-test-modelunderstanding	10m 14s
Nightly 3.9 git-test-other	9m 25s
Nightly 3.9 git-test-parallel	4m 41s
Nightly 3.9 git-test-prophet	6m 21s
	1h 34m 40s

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