ci: Make rustfmt and clippy happy #642

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	4m 32s
test (x86_64-unknown-linux-gnu, nightly)	4m 2s
test (i686-unknown-linux-gnu, stable)	1m 31s
test (i686-unknown-linux-gnu, nightly)	1m 33s
test (aarch64-unknown-linux-gnu, stable)	1m 24s
test (aarch64-unknown-linux-gnu, nightly)	1m 35s
test (armv7-unknown-linux-gnueabihf, stable)	1m 23s
test (armv7-unknown-linux-gnueabihf, nightly)	1m 31s
test (riscv64gc-unknown-linux-gnu, stable)	1m 30s
test (riscv64gc-unknown-linux-gnu, nightly)	1m 29s
test (s390x-unknown-linux-gnu, stable)	1m 27s
test (s390x-unknown-linux-gnu, nightly)	1m 30s
test (x86_64-apple-darwin, stable)	1m 1s
test (x86_64-apple-darwin, nightly)	25s
test (aarch64-apple-darwin, stable)	2m 40s
test (aarch64-apple-darwin, nightly)	23s
test (x86_64-pc-windows-gnu, stable)	2m 21s
test (x86_64-pc-windows-gnu, nightly)	55s
test (x86_64-pc-windows-msvc, stable)	4m 5s
test (x86_64-pc-windows-msvc, nightly)	1m 13s
test (i686-pc-windows-gnu, stable)	4m 49s
test (i686-pc-windows-gnu, nightly)	54s
test (i686-pc-windows-msvc, stable)	3m 21s
test (i686-pc-windows-msvc, nightly)	1m 5s
	46m 39s

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