Test

Replace `linux_rustix` opt-in backend with `linux_raw` #1730

Job	Run time
iOS Simulator	5m 54s
Linux (x86_64-unknown-linux-musl)	19s
Sanitizer	32s
Linux (i686-unknown-linux-musl)	14s
Tier 1 (ubuntu-24.04, nightly)	15s
Windows (stable-x86_64-gnu)	50s
Tier 1 (ubuntu-24.04, beta)	17s
Windows (stable-i686-gnu)	34s
Windows 7 (on Windows 10)	1m 47s
Tier 1 (ubuntu-24.04, stable)	11s
Windows (stable-i686-msvc)	57s
Tier 1 (ubuntu-24.04, 1.63)	24s
Tier 1 (windows-2022, nightly)	36s
FreeBSD VM	2m 21s
Cross (aarch64-unknown-linux-gnu)	24s
Tier 1 (windows-2022, beta)	40s
Cross (powerpc-unknown-linux-gnu)	33s
Tier 1 (windows-2022, stable)	1m 39s
NetBSD VM	3m 16s
Cross (wasm32-unknown-emscripten)	42s
Tier 1 (windows-2022, 1.63)	48s
Tier 1 (macos-14, stable)	15s
OpenBSD VM	3m 10s
WASI	18s
Web	28s
Web with Atomics	1m 14s
	28m 38s

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