Rust

fix clippy #1201

Job	Run time
clippy (stable)	1m 23s
clippy (beta)	1m 25s
rustfmt	14s
features (stable, ubuntu-latest)	5m 15s
clippy (nightly)	1m 28s
test (stable, ubuntu-latest)	1m 10s
features (stable, macos-latest)	9m 13s
test (stable, macos-latest)	1m 55s
features (stable, windows-latest)	9m 51s
test (stable, windows-latest)	2m 22s
features (beta, ubuntu-latest)	6m 15s
Release x86_64-unknown-linux-gnu	47s
test (beta, ubuntu-latest)	1m 7s
Release aarch64-unknown-linux-gnu	46s
test (beta, macos-latest)	1m 55s
Release armv7-unknown-linux-gnueabihf	50s
features (beta, macos-latest)	4m 33s
test (beta, windows-latest)	3m 18s
Release arm-unknown-linux-gnueabihf	44s
features (beta, windows-latest)	10m 4s
test (nightly, ubuntu-latest)	56s
Release riscv64gc-unknown-linux-gnu	46s
test (nightly, macos-latest)	1m 35s
Release x86_64-apple-darwin	58s
test (nightly, windows-latest)	2m 36s
Release aarch64-apple-darwin	39s
Release x86_64-pc-windows-msvc	2m 7s
Release aarch64-pc-windows-msvc	1m 48s
	1h 16m 0s

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