diff -r 5209fc94b982 -r 86e4daa2d54c mercurial/dispatch.py
--- a/mercurial/dispatch.py	Sun Oct 06 10:10:14 2019 -0400
+++ b/mercurial/dispatch.py	Sun Oct 06 10:51:16 2019 -0400
@@ -93,7 +93,7 @@
                 except:  # re-raises below
                     if exc is None:
                         exc = sys.exc_info()[1]
-                    self.ui.warn(b'error in exit handlers:\n')
+                    self.ui.warnnoi18n(b'error in exit handlers:\n')
                     self.ui.traceback(force=True)
         finally:
             if exc is not None: