fix: add more lints, fix miri #254

Job	Run time
Test (x86_64-unknown-linux-gnu, nightly)	25s
Miri (x86_64-unknown-linux-gnu, --no-default-features)	1m 30s
docs	18s
Miri (x86_64-unknown-linux-gnu)	1m 10s
Clippy	18s
Miri (x86_64-unknown-linux-gnu, --all-features)	1m 14s
Miri (x86_64-unknown-linux-gnu, --features force-generic)	1m 7s
feature checks	1m 43s
fmt	16s
Test (x86_64-unknown-linux-gnu, beta)	28s
Fuzz	33s
Test (x86_64-unknown-linux-gnu, stable)	14s
Outdated	0s
Test (x86_64-unknown-linux-gnu, 1.64)	33s
Test (aarch64-unknown-linux-gnu, nightly)	47s
Test (aarch64-unknown-linux-gnu, beta)	44s
Test (aarch64-unknown-linux-gnu, stable)	39s
Test (aarch64-unknown-linux-gnu, 1.64)	47s
	12m 46s

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