Only configure logging handlers if not already present.

rq/scripts/rqworker.py

@@ -15,6 +15,7 @@ logger = logging.getLogger(__name__)
 
 
 def setup_loghandlers(args):
+    if not logging._handlers:
         logging.config.dictConfig({
             "version": 1,
             "disable_existing_loggers": False,
@@ -91,3 +92,6 @@ def main():
     except ConnectionError as e:
         print(e)
         sys.exit(1)
+
+if __name__ == "__main__":
+    main()