fix: `clippy` warnings #1020

Job	Run time
cargo-lint / cargo-dry-publish / publish	4s
cargo-lint / cargo-semver / Check semver	3m 22s
cargo-lint / cargo-doc / doc	6s
cargo-lint / cargo-nursery-base / cargo-audit / Audit	6m 2s
cargo-lint / cargo-nursery-base / cargo-lint / lint	1m 27s
cleanup	0s
cargo-publish	0s
	11m 1s

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