Nightly unit tests, linux #622

Job	Run time
Nightly 3.8 git-test-automl	16m 57s
Nightly 3.8 git-test-modelunderstanding	10m 2s
Nightly 3.8 git-test-other	9m 30s
Nightly 3.8 git-test-parallel	4m 38s
Nightly 3.8 git-test-prophet	6m 21s
Nightly 3.9 git-test-automl	18m 21s
Nightly 3.9 git-test-modelunderstanding	10m 34s
Nightly 3.9 git-test-other	9m 14s
Nightly 3.9 git-test-parallel	4m 18s
Nightly 3.9 git-test-prophet	6m 26s
	1h 36m 21s

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