Clean up lints #4870

Job	Run time
build-macos-x86_64 (dev, x86_64-apple-darwin)	15m 3s
build-all-features (ubuntu-latest, x86_64-unknown-linux-gnu)	5m 12s
doc	8s
build-windows-pr (release, aarch64-pc-windows-gnullvm)	4m 27s
check	39s
build-windows-pr (dev, aarch64-pc-windows-gnullvm)	15m 11s
build-windows-pr (release, aarch64-pc-windows-msvc)	4m 14s
build-linux-pr (dev, armv7-unknown-linux-gnueabihf)	1m 15s
build-windows-pr (release, x86_64-pc-windows-msvc)	3m 56s
build-windows-pr (dev, x86_64-pc-windows-gnu)	2m 50s
build-macos-aarch64 (dev, aarch64-apple-darwin)	14m 20s
build-windows-pr (dev, aarch64-pc-windows-msvc)	22m 30s
build-windows-pr (dev, x86_64-pc-windows-msvc)	20m 2s
build-all-features (windows-latest, x86_64-pc-windows-msvc)	19m 9s
build-linux-pr (dev, aarch64-linux-android)	3m 2s
build-macos-x86_64 (release, x86_64-apple-darwin)	3m 36s
build-linux-pr (release, armv7-unknown-linux-gnueabihf)	2m 28s
build-windows-pr (release, x86_64-pc-windows-gnu)	4m 37s
build-macos-aarch64 (release, aarch64-apple-darwin)	2m 9s
build-linux-pr (release, aarch64-unknown-linux-gnu)	3m 7s
build-linux-pr (release, aarch64-linux-android)	2m 58s
build-linux-pr (dev, x86_64-unknown-linux-gnu)	6m 20s
build-linux-pr (dev, aarch64-unknown-linux-gnu)	8m 9s
build-linux-pr (release, x86_64-unknown-linux-gnu)	2m 40s
build-freebsd-main	-8s
build-linux-stable	-9s
build-freebsd-stable	-10s
build-linux-main	-10s
build-windows-stable	-11s
build-windows-main	-11s
conclusion	3s
	2h 47m 6s

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