nightly clippy #493

Job	Run time
rust_ci (macos-latest, stable)	1m 11s
rust_ci (macos-latest, beta)	1m 38s
rust_ci (macos-latest, nightly)	1m 46s
rust_ci (ubuntu-latest, stable)	1m 15s
rust_ci (ubuntu-latest, beta)	1m 45s
rust_ci (ubuntu-latest, nightly)	1m 56s
rust_ci (windows-latest, stable)	3m 0s
rust_ci (windows-latest, beta)	2m 54s
rust_ci (windows-latest, nightly)	4m 16s
	19m 41s

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