Rust

Use a single setup_octocrab #1602

Job	Run time
wasm-build	1m 2s
clippy	1m 18s
build (stable, ubuntu)	4m 14s
build (stable, ubuntu, -F stream)	4m 24s
build (stable, macos)	3m 30s
build (stable, macos, -F stream)	3m 35s
build (stable, windows)	8m 25s
build (stable, windows, -F stream)	8m 18s
build (beta, ubuntu)	3m 57s
build (beta, ubuntu, -F stream)	3m 53s
build (beta, macos)	4m 3s
build (beta, macos, -F stream)	3m 22s
build (beta, windows)	7m 36s
build (beta, windows, -F stream)	7m 37s
build (nightly, ubuntu)	3m 0s
build (nightly, ubuntu, -F stream)	3m 8s
build (nightly, macos)	3m 38s
build (nightly, macos, -F stream)	3m 29s
build (nightly, windows)	7m 19s
build (nightly, windows, -F stream)	7m 0s
	1h 32m 48s

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