https://bugs.openldap.org/show_bug.cgi?id=10275
--- Comment #4 from Howard Chu hyc@openldap.org --- Thanks for the patch.
The tool should be silent for normal operation; the message printf("Using MDB_NOSYNC flag, will force sync before exit");
is unnecessary. And even if we were to include such messages, since they're not related to the actual program output they would belong on stderr, not stdout.
I'm going to delete that line from the patch.