1 1.4 rillig make: Unfinished modifier for "BRACE_GROUP" (',' missing) 2 1.6 rillig make: "parse-var.mk" line 129: Malformed conditional (0 && ${BRACE_GROUP:S,${BRACE_PAIR:S,{,{{,},<lbraces>,}) 3 1.4 rillig make: Fatal errors encountered -- cannot continue 4 1.4 rillig make: stopped in unit-tests 5 1.4 rillig exit status 1 6