🐛 Fix benchmark code #63

Job	Run time
test (ubuntu-latest, stable)	33s
check (ubuntu-latest, stable)	13s
test-fastfloat (ubuntu-latest, stable)	36s
test (ubuntu-latest, nightly)	43s
check (ubuntu-latest, nightly)	23s
test-fastfloat (ubuntu-latest, nightly)	45s
test (windows-latest, stable)	1m 39s
check (windows-latest, stable)	37s
test-fastfloat (windows-latest, stable)	1m 34s
test (windows-latest, nightly)	1m 40s
check (windows-latest, nightly)	50s
test-fastfloat (windows-latest, nightly)	1m 30s
test (macOS-latest, stable)	1m 51s
check (macOS-latest, stable)	1m 2s
test-fastfloat (macOS-latest, stable)	1m 47s
test (macOS-latest, nightly)	1m 41s
check (macOS-latest, nightly)	46s
test-fastfloat (macOS-latest, nightly)	1m 50s
rustdoc	13s
	20m 13s

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