fix alloydb #67

Job	Run time
check	24s
check no_std	26s
check serde	26s
check no_std optimism	23s
check std	24s
clippy	57s
docs	1m 20s
fmt	12s
test stable --no-default-features	58s
test stable	53s
test stable --features="all, scroll"	1m 29s
test stable --features="all, optimism"	1m 38s
test beta --no-default-features	55s
test beta	56s
test beta --features="all, scroll"	1m 31s
test beta --features="all, optimism"	1m 37s
test nightly --no-default-features	45s
test nightly	1m 6s
test nightly --features="all, scroll"	1m 23s
test nightly --features="all, optimism"	1m 24s
	19m 7s

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