Chore: fix feature specific lint warnings #3276

Job	Run time
lint	12m 19s
cluster-benchmark (cluster_benchmark)	1m 9s
examples (stable, memstore)	57s
examples (stable, raft-kv-memstore)	2m 44s
examples (stable, raft-kv-memstore-network-v2)	53s
openraft-test (stable, 0)	3m 26s
openraft-feature-test (nightly)	1m 0s
examples (stable, raft-kv-memstore-opendal-snapshot-data)	1m 9s
openraft-test-bench (nightly)	1m 1s
openraft-test (nightly, 30)	3m 26s
openraft-feature-test (nightly, serde)	1m 12s
examples (stable, raft-kv-memstore-singlethreaded)	1m 7s
openraft-test (nightly, 0, single-term-leader)	3m 31s
openraft-feature-test (nightly, single-term-leader)	1m 6s
examples (stable, raft-kv-rocksdb)	7m 10s
rt-monoio	44s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	1m 0s
examples (nightly, memstore)	1m 19s
stores (stores/memstore)	57s
examples (nightly, raft-kv-memstore)	2m 27s
stores (stores/rocksstore)	6m 27s
Build (nightly, bench,serde,bt,singlethreaded)	51s
examples (nightly, raft-kv-memstore-network-v2)	1m 25s
tests-feature-test (nightly)	3m 2s
stores (stores/sledstore)	1m 2s
examples (nightly, raft-kv-memstore-opendal-snapshot-data)	1m 47s
tests-feature-test (nightly, single-term-leader)	3m 5s
tests-feature-test (nightly, loosen-follower-log-revert)	3m 1s
examples (nightly, raft-kv-memstore-singlethreaded)	1m 18s
examples (nightly, raft-kv-rocksdb)	12m 39s
	1h 23m 14s

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