silence locate --help call that will always fail for us
Index: catfish/CatfishSearchEngine.py
--- catfish/CatfishSearchEngine.py.orig
+++ catfish/CatfishSearchEngine.py
@@ -805,7 +805,7 @@ class CatfishSearchMethod_Locate(CatfishSearchMethodEx
             "regex": False
         }
         try:
-            details = subprocess.check_output(["locate", "--help"])
+            details = subprocess.check_output(["locate", "--help"],stderr=subprocess.DEVNULL)
             details = details.decode("utf-8")
             if "--existing" in details:
                 caps["existing"] = True