make: directive-export-gmake.mk:71: Invalid line "export VAR=${:U1}", expanded to "export VAR=1"
	in .for loop from directive-export-gmake.mk:67 with value = 1
make: directive-export-gmake.mk:85: 16:00:00
make: directive-export-gmake.mk:92: Variable/Value missing from "export"
make: Fatal errors encountered -- cannot continue
make: stopped in unit-tests
exit status 1