diff -r 5209fc94b982 -r 86e4daa2d54c hgext/phabricator.py
--- a/hgext/phabricator.py	Sun Oct 06 10:10:14 2019 -0400
+++ b/hgext/phabricator.py	Sun Oct 06 10:51:16 2019 -0400
@@ -774,7 +774,7 @@
                     try:
                         writediffproperties(unfi[newnode], diffmap[old.node()])
                     except util.urlerr.urlerror:
-                        ui.warn(b'Failed to update metadata for D%s\n' % drevid)
+                        ui.warnnoi18n(b'Failed to update metadata for D%s\n' % drevid)
                 # Remove local tags since it's no longer necessary
                 tagname = b'D%d' % drevid
                 if tagname in repo.tags():