Update rand test #2922

Job	Run time
bench	10m 19s
dist (ubuntu-20.04, x86_64-unknown-linux-gnu)	2m 13s
dist (macos-latest, x86_64-apple-darwin)	3m 34s
rustfmt	19s
dist (ubuntu-latest, x86_64-pc-windows-gnu)	2m 41s
dist (windows-latest, x86_64-pc-windows-msvc)	3m 39s
test (ubuntu-latest, x86_64-unknown-linux-gnu)	10m 14s
test (macos-latest, x86_64-apple-darwin)	15m 43s
dist (windows-latest, x86_64-pc-windows-gnu)	4m 41s
test_llvm	6m 57s
test (ubuntu-latest, x86_64-pc-windows-gnu)	10m 49s
test (ubuntu-latest, aarch64-unknown-linux-gnu)	6m 54s
test (ubuntu-latest, s390x-unknown-linux-gnu)	5m 59s
test (windows-latest, x86_64-pc-windows-msvc)	20m 7s
test (windows-latest, x86_64-pc-windows-gnu)	28m 42s
release	0s
	2h 12m 51s

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