Rust

cargo: Add missing `sync` feature to `all` #1797

Job	Run time
Host-side tests (ubuntu-latest, stable)	46s
Check ndk-sys MSRV (1.60.0)	4m 36s
Host-side tests (ubuntu-latest, nightly)	34s
Cross-compile (ubuntu-latest, stable, armv7-linux-androideabi, armeabi-v7a)	1m 22s
Check overall MSRV (1.66.0)	5m 38s
Cross-compile (ubuntu-latest, stable, aarch64-linux-android, arm64-v8a)	1m 13s
clippy	26s
Cross-compile (ubuntu-latest, stable, i686-linux-android, x86)	1m 25s
Build-test docs (ubuntu-latest, stable)	34s
Cross-compile (ubuntu-latest, stable, x86_64-linux-android, x86_64)	1m 31s
formatting	10s
Build-test docs (ubuntu-latest, nightly)	36s
Cross-compile (ubuntu-latest, nightly, armv7-linux-androideabi, armeabi-v7a)	1m 17s
Cross-compile (ubuntu-latest, nightly, aarch64-linux-android, arm64-v8a)	1m 28s
Cross-compile (ubuntu-latest, nightly, i686-linux-android, x86)	1m 26s
Cross-compile (ubuntu-latest, nightly, x86_64-linux-android, x86_64)	1m 35s
Cross-compile (windows-latest, stable, aarch64-linux-android, arm64-v8a)	3m 8s
Cross-compile (windows-latest, stable, x86_64-linux-android, x86_64)	4m 13s
	31m 58s

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