diff --git a/.arcconfig b/.arcconfig
--- a/.arcconfig
+++ b/.arcconfig
@@ -1,5 +1,5 @@
 {
-  "phabricator.uri" : "https://phabricator.services.mozilla.com/",
-  "repository.callsign": "MOZILLACENTRAL",
+  "phabricator.uri" : "https://phabricator-dev.allizom.org/",
+  "repository.callsign": "MC",
   "history.immutable": false
 }
diff --git a/layout/tools/reftest/reftestcommandline.py b/layout/tools/reftest/reftestcommandline.py
--- a/layout/tools/reftest/reftestcommandline.py
+++ b/layout/tools/reftest/reftestcommandline.py
@@ -1,5 +1,9 @@
+change_to_fail_flake8()
+
+another_change_to_fail_flake8()
+
 from __future__ import absolute_import, print_function
 
 import argparse
 import os
 import sys
@@ -9,11 +13,11 @@
 
 from six.moves.urllib.parse import urlparse
 
 here = os.path.abspath(os.path.dirname(__file__))
 
-
+    
 class ReftestArgumentsParser(argparse.ArgumentParser):
     def __init__(self, **kwargs):
         super(ReftestArgumentsParser, self).__init__(**kwargs)
 
         # Try to import a MozbuildObject. Success indicates that we are