fix: atomic cas #672

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	4m 42s
test (x86_64-unknown-linux-gnu, nightly)	21s
test (aarch64-unknown-linux-gnu, stable)	1m 40s
test (aarch64-unknown-linux-gnu, nightly)	21s
test (armv7-unknown-linux-gnueabihf, stable)	1m 41s
test (armv7-unknown-linux-gnueabihf, nightly)	24s
test (riscv64gc-unknown-linux-gnu, stable)	1m 40s
test (riscv64gc-unknown-linux-gnu, nightly)	22s
test (s390x-unknown-linux-gnu, stable)	1m 48s
test (s390x-unknown-linux-gnu, nightly)	22s
test (x86_64-apple-darwin, stable)	1m 20s
test (x86_64-apple-darwin, nightly)	26s
test (aarch64-apple-darwin, stable)	2m 41s
test (aarch64-apple-darwin, nightly)	28s
test (x86_64-pc-windows-gnu, stable)	3m 3s
test (x86_64-pc-windows-gnu, nightly)	46s
test (x86_64-pc-windows-msvc, stable)	4m 44s
test (x86_64-pc-windows-msvc, nightly)	53s
test (i686-pc-windows-gnu, stable)	5m 36s
test (i686-pc-windows-gnu, nightly)	1m 1s
test (i686-pc-windows-msvc, stable)	2m 8s
test (i686-pc-windows-msvc, nightly)	1m 2s
	37m 29s

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