https://fedorahosted.org/389/ticket/49104
https://fedorahosted.org/389/attachment/ticket/49104/0001-Ticket-49104-dbscan-bin-crashing-due-to-a-segmentati.patch
https://fedorahosted.org/389/attachment/ticket/49104/0002-Ticket-49104-Add-CI-test.patch
git patch file (master) -- CI test
https://fedorahosted.org/389/attachment/ticket/49104/0001-dbscan-Support-additional-options-t-truncate-R.patch