Tests

Parallel compactions for Leveled compaction #435

Job	Run time
cross (aarch64-unknown-linux-gnu)	2m 33s
cross (aarch64-unknown-linux-musl)	2m 49s
test (stable, ubuntu-latest)	2m 21s
cross (i686-unknown-linux-gnu)	2m 7s
test (stable, windows-latest)	5m 35s
cross (powerpc64-unknown-linux-gnu)	2m 41s
test (stable, macos-latest)	1m 54s
cross (riscv64gc-unknown-linux-gnu)	2m 22s
test (1.74.0, ubuntu-latest)	2m 22s
test (1.74.0, windows-latest)	3m 59s
test (1.74.0, macos-latest)	2m 0s
	30m 43s

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