ci: Make rustfmt and clippy happy #640

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	7m 38s
test (x86_64-unknown-linux-gnu, nightly)	18s
test (i686-unknown-linux-gnu, stable)	1m 21s
test (i686-unknown-linux-gnu, nightly)	21s
test (aarch64-unknown-linux-gnu, stable)	1m 21s
test (aarch64-unknown-linux-gnu, nightly)	22s
test (armv7-unknown-linux-gnueabihf, stable)	1m 19s
test (armv7-unknown-linux-gnueabihf, nightly)	22s
test (riscv64gc-unknown-linux-gnu, stable)	1m 20s
test (riscv64gc-unknown-linux-gnu, nightly)	20s
test (s390x-unknown-linux-gnu, stable)	1m 14s
test (s390x-unknown-linux-gnu, nightly)	23s
test (x86_64-apple-darwin, stable)	3m 48s
test (x86_64-apple-darwin, nightly)	26s
test (aarch64-apple-darwin, stable)	2m 50s
test (aarch64-apple-darwin, nightly)	23s
test (x86_64-pc-windows-gnu, stable)	6m 25s
test (x86_64-pc-windows-gnu, nightly)	1m 4s
test (x86_64-pc-windows-msvc, stable)	6m 20s
test (x86_64-pc-windows-msvc, nightly)	1m 7s
test (i686-pc-windows-gnu, stable)	8m 41s
test (i686-pc-windows-gnu, nightly)	1m 19s
test (i686-pc-windows-msvc, stable)	5m 19s
test (i686-pc-windows-msvc, nightly)	1m 15s
	55m 16s

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