Error on modules-as-namespaces #9418

Job	Run time
tidy	1m 31s
misc	1m 23s
build	3m 29s
generate	11m 21s
lint (windows-latest)	13m 23s
lint (noembed)	5m 55s
test (windows-latest)	20m 58s
test (race mode)	18m 33s
test (no submodules)	9m 29s
test (noembed)	9m 24s
smoke	6m 11s
lint (ubuntu-latest)	6m 28s
format	2m 1s
test (ubuntu-latest)	11m 14s
test (concurrent test programs)	12m 39s
extension	38s
required	3s
	2h 14m 40s

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