Handle an error condition correctly #642

Job	Run time
test-juliaup (x86_64-pc-windows-msvc)	3m 43s
check-juliaup (x86_64-pc-windows-msvc-windowsstore)	2m 15s
test-juliaup (x86_64-pc-windows-gnu)	3m 44s
check-juliaup (x86_64-pc-windows-msvc-windowsappinstaller)	3m 27s
test-juliaup (x86_64-apple-darwin)	3m 42s
check-juliaup (x86_64-pc-windows-gnu-msi)	3m 27s
test-juliaup (x86_64-unknown-linux-gnu)	3m 13s
check-juliaup (x86_64-pc-windows-gnu-msi)	2m 20s
test-juliaup (x86_64-unknown-linux-musl)	3m 33s
check-juliaup (x86_64-apple-darwin)	1m 6s
check-juliaup (x86_64-unknown-linux-gnu)	1m 41s
test-juliaup (i686-pc-windows-msvc)	3m 44s
check-juliaup (x86_64-unknown-linux-musl)	1m 58s
test-juliaup (i686-pc-windows-gnu)	3m 42s
check-juliaup (i686-pc-windows-msvc-windowsstore)	2m 21s
check-juliaup (i686-pc-windows-msvc-windowsappinstaller)	2m 13s
check-juliaup (i686-pc-windows-gnu-msi)	2m 42s
check-juliaup (i686-unknown-linux-gnu)	2m 0s
check-juliaup (i686-unknown-linux-musl)	1m 49s
check-juliaup (aarch64-unknown-linux-gnu)	1m 37s
check-juliaup (aarch64-unknown-linux-musl)	1m 42s
check-juliaup (aarch64-apple-darwin)	56s
	56m 55s

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