BucketList cache #6401

Job	Run time
rust-check-git-rev-deps	17s
cargo-deny (advisories)	47s
build (gcc, current)	1h 4m 7s
fmt	38s
cargo-deny (bans licenses sources)	55s
build (gcc, current, --check-test-tx-meta)	51m 19s
build (gcc, next)	1h 8m 35s
build (gcc, next, --check-test-tx-meta)	54m 31s
build (clang, current)	41m 16s
build (clang, current, --check-test-tx-meta)	45m 47s
build (clang, next)	41m 36s
build (clang, next, --check-test-tx-meta)	48m 50s
complete	1s
	6h 58m 39s

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