Jvm arg #665

Job	Run time
rust_ci (macos-latest, stable)	56s
rust_ci (windows-latest, beta)	1m 54s
rust_ci (windows-latest, stable)	2m 9s
rust_ci (ubuntu-latest, stable)	51s
rust_ci (macos-latest, beta)	1m 15s
rust_ci (ubuntu-latest, beta)	55s
	8m 0s

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