Fix clippy lints #354

Job	Run time
build (ubuntu-20.04, x86_64-unknown-linux-gnu)	17m 39s
build (ubuntu-20.04, aarch64-unknown-linux-gnu)	17m 49s
build (macos-latest, x86_64-apple-darwin)	31m 1s
build (macos-latest, aarch64-apple-darwin)	41m 4s
build (windows-latest, x86_64-pc-windows-gnu)	29m 58s
test (macos-latest, release)	5m 55s
test (windows-latest, oldrel-1)	6m 17s
test (windows-latest, release)	4m 22s
test (windows-latest, devel)	4m 21s
test (ubuntu-latest, oldrel-1)	2m 53s
test (ubuntu-latest, release)	2m 52s
test (ubuntu-latest, devel)	5m 31s
release	0s
	2h 49m 42s

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