app/models/naf/machine.rb in naf-2.1.0 vs app/models/naf/machine.rb in naf-2.1.1

@@ -212,10 +212,10 @@
       end
     end
 
     def mark_machine_down(by_machine)
       marking_at = Time.zone.now
-      machine_logger.alarm "#{by_machine.id} marking #{self} as down at #{marking_at}"
+      machine_logger.alarm "#{by_machine.try(:id)} marking #{self} as down at #{marking_at}"
       self.marked_down = true
       self.marked_down_by_machine_id = by_machine.id
       self.marked_down_at = marking_at
       save!
       mark_processes_as_dead(by_machine)