Fix up rustjswasm #74

Job	Run time
build (python, ubuntu-latest)	43s
build (python, macos-latest)	45s
build (js, ubuntu-latest)	1m 6s
build (rust, ubuntu-latest)	4m 51s
build (rust, macos-latest)	4m 54s
build (rustjswasm, ubuntu-latest)	7m 23s
build (jupyter, ubuntu-latest)	1m 40s
build (js, macos-latest)	1m 34s
build (rustjswasm, macos-latest)	8m 20s
build (jupyter, macos-latest)	1m 51s
	33m 7s

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