Fail `build.sh` if any command in it fails #4272

Job	Run time
Diagnostic export (macos-latest, linked)	1m 29s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 7s
Diagnostic export (ubuntu-latest, linked)	1m 4s
Diagnostic export (macos-latest, nightly-latest)	1m 14s
Diagnostic export (windows-latest, nightly-latest)	4m 3s
Diagnostic export (windows-latest, linked)	3m 27s
	12m 24s

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