flowey: specify Rust version in GitHub bootstrap (#212) #128

Job	Run time
build mdbook guide	1m 28s
build artifacts [aarch64-linux]	5m 48s
build and check docs [x64-windows]	10m 11s
build openhcl [aarch64-linux]	8m 0s
build openhcl [x64-linux]	9m 40s
build artifacts [x64-linux]	6m 35s
clippy [windows], unit tests [x64-windows]	15m 26s
clippy [linux, macos], unit tests [x64-linux]	10m 40s
clippy [linux-musl, misc nostd], unit tests [x64-linux-musl]	10m 20s
build and check docs [x64-linux]	2m 57s
test flowey local backend	3m 0s
xtask fmt (linux)	2m 27s
build artifacts (not for VMM tests) [aarch64-windows]	4m 55s
build artifacts (for VMM tests) [aarch64-windows]	16m 13s
build artifacts (not for VMM tests) [x64-windows]	5m 6s
build artifacts (for VMM tests) [x64-windows]	16m 41s
xtask fmt (windows)	7m 6s
publish openvmm.dev	45s
run vmm-tests [x64-windows-intel]	8m 54s
run vmm-tests [x64-windows-amd]	7m 9s
run vmm-tests [x64-linux]	3m 27s
	2h 36m 48s

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