Bug #16190704: MTR STILL LOSES THE FAILED RUN LOGS AT RETRY-FAIL

mysql-test/mysql-test-run.pl

@@ -617,9 +617,11 @@ sub run_test_server ($$$) {
 	      mtr_report("\nRetrying test $tname, ".
 			 "attempt($retries/$opt_retry)...\n");
               #saving the log file as filename.failed in case of retry
-              my $worker_logdir= $result->{savedir};
-              my $log_file_name=dirname($worker_logdir)."/".$result->{shortname}.".log";
-              rename $log_file_name,$log_file_name.".failed";
+              if ( $result->is_failed() ) { 
+                my $worker_logdir= $result->{savedir};
+                my $log_file_name=dirname($worker_logdir)."/".$result->{shortname}.".log";
+                rename $log_file_name,$log_file_name.".failed";
+              }
 	      delete($result->{result});
 	      $result->{retries}= $retries+1;
 	      $result->write_test($sock, 'TESTCASE');