Fix one more place that was depending on std::os::unix::fs::Permissio… #1641

Job	Run time
Check Cross-Compilation on Rust nightly on Windows (nightly)	1m 41s
Check Cross-Compilation on Rust nightly (nightly)	1m 54s
Check Cross-Compilation on Windows (stable)	2m 57s
Check Cross-Compilation (stable)	1m 12s
Check Cross-Compilation on Windows (beta)	1m 28s
Check Cross-Compilation (beta)	1m 41s
Fuzz Targets	47s
Rustfmt	10s
Test (stable)	23s
Test on Musl (ubuntu)	49s
Test (windows-latest)	1m 48s
Test linux-raw support (ubuntu)	33s
Test (msrv)	2m 5s
Test (windows-2019)	2m 28s
Test linux-raw support (ubuntu-20.04)	29s
Test (macos-latest)	54s
Test with Rust nightly (ubuntu)	32s
Test (macos-11)	1m 8s
Test (beta)	29s
Test with Rust nightly (windows)	1m 27s
Test (ubuntu-20.04)	21s
Test (aarch64-ubuntu)	2m 18s
	27m 34s

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