chore: more lints #886

Job	Run time
docs	1m 9s
feature-checks	2m 43s
doctest	57s
clippy	46s
fmt	12s
test stable (ubuntu-latest)	59s
test stable --all-features (ubuntu-latest)	1m 49s
test 1.83 (ubuntu-latest)	57s
test stable (macos-latest)	57s
test stable --all-features (macos-latest)	2m 2s
test 1.83 (macos-latest)	1m 6s
test stable (windows-latest)	2m 45s
test stable --all-features (windows-latest)	4m 51s
test 1.83 (windows-latest)	2m 25s
deny / cargo deny check	17s
	23m 55s

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