Experiment: two stage builder approach for custom protocols #8611

Job	Run time
check_semver	3m 37s
Checking docs	1m 13s
cargo deny	28s
clippy_check	1m 37s
Checking fmt	16s
Cross Build Only (armv7-linux-androideabi)	1m 2s
Cross Test (i686-unknown-linux-gnu)	2m 31s
Cross Build Only (aarch64-linux-android)	1m 1s
Cross Build Only (x86_64-unknown-freebsd)	1m 7s
Minimal Supported Rust Version	1m 46s
Cross Build Only (x86_64-unknown-netbsd)	1m 9s
Run network simulations/benchmarks	7m 25s
Build wasm32	37s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	3m 47s
CI Test Suite / Tests (ubuntu-latest, stable, all)	2m 39s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	3m 51s
CI Test Suite / Tests (ubuntu-latest, stable, none)	2m 48s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	3m 48s
CI Test Suite / Tests (ubuntu-latest, stable, default)	2m 18s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	3m 4s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	2m 53s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	2m 55s
	51m 52s

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