Clean up and rework CI script #49

Job	Run time
Clippy	12s
Rustfmt	8s
Test (aarch64-unknown-linux-gnu, ubuntu-latest, nightly)	1m 41s
Test (arm-unknown-linux-gnueabi, ubuntu-latest, nightly)	1m 33s
Test (arm-unknown-linux-gnueabihf, ubuntu-latest, nightly)	2m 0s
Test (i586-unknown-linux-gnu, ubuntu-latest, nightly)	1m 16s
Test (i686-unknown-linux-gnu, ubuntu-latest, nightly)	1m 14s
Test (powerpc-unknown-linux-gnu, ubuntu-latest, nightly)	1m 39s
Test (powerpc64-unknown-linux-gnu, ubuntu-latest, nightly)	1m 38s
Test (powerpc64le-unknown-linux-gnu, ubuntu-latest, nightly)	1m 51s
Test (thumbv6m-none-eabi, ubuntu-latest, nightly)	1m 8s
Test (thumbv7em-none-eabi, ubuntu-latest, nightly)	1m 2s
Test (thumbv7em-none-eabihf, ubuntu-latest, nightly)	55s
Test (thumbv7m-none-eabi, ubuntu-latest, nightly)	56s
Test (wasm32-unknown-unknown, ubuntu-latest, nightly)	1m 7s
Test (x86_64-unknown-linux-gnu, ubuntu-latest, nightly)	1m 6s
Test (x86_64-apple-darwin, macos-latest, nightly)	1m 22s
Test (i686-pc-windows-msvc, windows-latest, nightly)	1m 38s
Test (x86_64-pc-windows-msvc, windows-latest, nightly)	1m 36s
Test (i686-pc-windows-gnu, windows-latest, nightly-i686-gnu)	2m 14s
Test (x86_64-pc-windows-gnu, windows-latest, nightly-x86_64-gnu)	2m 5s
success	1s
	28m 22s

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