$stderr = join '', @$stderr;
unless ($success) {
diag $stderr;
diag "Failed to execute data file (error $err_code)";
fail "Couldn't run test $_" for 1 .. $total + 1;
$stderr = join '', @$stderr;
unless ($success) {
diag $stderr;
diag "Failed to execute data file (error $err_code)";
fail "Couldn't run test $_" for 1 .. $total + 1;