osync: Segmentation fault in macOS Sierra

I have just tried a local-local sync with the current master and v1.2 on macOS. In both cases, synchronization is performed, but then I get a segmentation fault:

./osync.sh --initiator=./source_replica --target=./target_replica 
TIME: 1 - -------------------------------------------------------------
TIME: 1 - Wed May 24 12:33:46 CEST 2017 - osync 1.2 script begin.
TIME: 1 - -------------------------------------------------------------
TIME: 1 - Sync task [quicksync_task] launched as me@MyMac.local (PID 20740)
TIME: 1 - Checking minimum disk space in local replica [./source_replica/].
TIME: 1 - Checking minimum disk space in local replica [./target_replica/].
TIME: 1 - Starting synchronization task.
TIME: 1 - Creating target replica file list [./target_replica/].
TIME: 1 - Creating initiator replica file list [./source_replica/].
TIME: 1 - Creating initiator replica deleted file list.
TIME: 1 - Creating target replica deleted file list.
TIME: 1 - Updating target replica.
TIME: 1 - Updating target replica succeded.
TIME: 1 - Updating initiator replica.
TIME: 1 - Updating initiator replica succeded.
TIME: 1 - Propagating deletions to initiator replica.
TIME: 1 - Propagating deletions to target replica.
TIME: 1 - Creating initiator replica file list [./source_replica/].
TIME: 1 - Creating target replica file list [./target_replica/].
TIME: 2 - Finished synchronization task.
TIME: 2 - Running conflict backup cleanup.
TIME: 2 - Running soft deletion cleanup.
TIME: 2 - Removing files older than 30 days on initiator replica for softdelete deletion.
TIME: 2 - Removing files older than 30 days on target replica for softdelete deletion.
TIME: 2 - File cleanup complete on initiator replica.
TIME: 2 - File cleanup complete on target replica.
TIME: 2 - Directory cleanup complete on initiator replica.
TIME: 2 - Directory cleanup complete on target replica.
TIME: 2 - osync finished.
Segmentation fault: 11