Mark rust as abi3 #193

Job	Run time
build (js, macos-latest)	1m 26s
build (python, macos-latest)	31s
build (cpp, ubuntu-latest)	1m 40s
build (js, ubuntu-latest)	1m 13s
build (jupyter, macos-latest)	2m 25s
build (rust, macos-latest)	7m 7s
build (cpp, macos-latest)	1m 33s
build (rustjswasm, ubuntu-latest)	7m 33s
build (rustjswasm, macos-latest)	7m 34s
build (jupyter, ubuntu-latest)	1m 58s
build (cppjswasm, ubuntu-latest)	2m 9s
build (python, ubuntu-latest)	43s
build (cppjswasm, macos-latest)	2m 6s
build (rust, ubuntu-latest)	5m 30s
	43m 28s

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