Merge pull request #347 from cuviper/test-erase_indices #393

Job	Run time
clippy	15s
nostd_build (1.63.0, thumbv6m-none-eabi)	1m 55s
miri	4m 11s
nostd_build (stable, thumbv6m-none-eabi)	10s
tests (1.63.0)	2m 24s
tests (stable, arbitrary)	30s
Check MSRV and minimal-versions	2m 5s
tests (stable, quickcheck)	35s
tests (stable, rayon)	41s
tests (stable, rustc-rayon)	39s
tests (stable, serde)	41s
tests (stable, borsh)	31s
tests (stable, std)	33s
tests (beta)	36s
tests (nightly, test build benchmarks)	37s
Success	1s
	16m 24s

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