Sync with rustix' build.rs changes (#58) #1652

Job	Run time
Check Cross-Compilation (stable)	1m 21s
Check Cross-Compilation (beta)	1m 16s
Check Cross-Compilation on Windows (stable)	1m 23s
Check Cross-Compilation on Rust nightly (nightly)	1m 59s
Check Cross-Compilation on Rust nightly on Windows (nightly)	1m 31s
Check Cross-Compilation on Windows (beta)	1m 13s
Rustfmt	13s
Test (stable)	32s
Test linux-raw support (ubuntu)	32s
Test (windows-latest)	2m 3s
Test (msrv)	1m 22s
Test on Musl (ubuntu)	42s
Test linux-raw support (ubuntu-20.04)	32s
Test (windows-2019)	1m 38s
Test (macos-latest)	48s
Test with Rust nightly (ubuntu)	35s
Test (macos-11)	1m 9s
Test with Rust nightly (windows)	1m 40s
Fuzz Targets	47s
Test (beta)	30s
Test (ubuntu-20.04)	38s
Test (aarch64-ubuntu)	2m 28s
	24m 52s

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