removed try except on task

rowers/tasks.py

@@ -260,11 +260,9 @@ def handle_check_race_course(self,
         )
 
     with engine.connect() as conn, conn.begin():
-        try:
         result = conn.execute(query)
         polygons = result.fetchall()
-        except:
+
-            print "Database locked"
     conn.close()
     engine.dispose()