make: varmod-range.mk:43: Variable "" is undefined
	while evaluating "${:range=5} != """ with value "1 2 3 4 5"
make: varmod-range.mk:66: Invalid number "x}Rest" != "Rest"" for ':range' modifier
	while evaluating "${:U:range=x}Rest" != "Rest"" with value ""
make: varmod-range.mk:76: Unknown modifier ":x0"
	while evaluating "${:U:range=0x0}Rest" != "Rest"" with value "1"
make: varmod-range.mk:93: Unknown modifier ":rang"
	while evaluating variable "a b c" with value "a b c"
make: varmod-range.mk:101: Unknown modifier ":rango"
	while evaluating variable "a b c" with value "a b c"
make: varmod-range.mk:109: Unknown modifier ":ranger"
	while evaluating variable "a b c" with value "a b c"
make: Fatal errors encountered -- cannot continue
make: stopped making "all" in unit-tests
exit status 1