BEGIN {sum = 0 ;
       errs = "";}
/unexpected failures:/ {
    cnt = $3;
    if (cnt != "0") {
        errs = errs "\n" FILENAME ": " cnt;
        sum += 1;
    }
}
END {
    if (sum != 0) {
        print "check failed";
        print sum " failing files:";
        print errs;
        exit(1);
    } else {
        print "no unexpected failures";
    }
}
