Merge pull request #549 from jfgoog/build-rs #662

Job	Run time
Clippy	19s
Rustfmt	16s
Test (aarch64-unknown-linux-gnu, ubuntu-latest, nightly)	3m 24s
Test (arm-unknown-linux-gnueabi, ubuntu-latest, nightly)	3m 30s
Test (arm-unknown-linux-gnueabihf, ubuntu-latest, nightly)	2m 30s
Test (i586-unknown-linux-gnu, ubuntu-latest, nightly)	2m 11s
Test (i686-unknown-linux-gnu, ubuntu-latest, nightly)	2m 38s
Test (powerpc-unknown-linux-gnu, ubuntu-latest, nightly)	3m 5s
Test (powerpc64-unknown-linux-gnu, ubuntu-latest, nightly)	2m 33s
Test (powerpc64le-unknown-linux-gnu, ubuntu-latest, nightly)	2m 48s
Test (thumbv6m-none-eabi, ubuntu-latest, nightly)	1m 58s
Test (thumbv7em-none-eabi, ubuntu-latest, nightly)	1m 53s
Test (thumbv7em-none-eabihf, ubuntu-latest, nightly)	1m 58s
Test (thumbv7m-none-eabi, ubuntu-latest, nightly)	1m 57s
Test (wasm32-unknown-unknown, ubuntu-latest, nightly)	1m 54s
Test (x86_64-unknown-linux-gnu, ubuntu-latest, nightly)	2m 0s
Test (x86_64-apple-darwin, macos-latest, nightly)	2m 25s
Test (i686-pc-windows-msvc, windows-latest, nightly)	3m 35s
Test (x86_64-pc-windows-msvc, windows-latest, nightly)	3m 22s
Test (i686-pc-windows-gnu, windows-latest, nightly-i686-gnu)	4m 49s
Test (x86_64-pc-windows-gnu, windows-latest, nightly-x86_64-gnu)	5m 15s
	54m 20s

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