diff -r 5209fc94b982 -r 86e4daa2d54c mercurial/sslutil.py
--- a/mercurial/sslutil.py	Sun Oct 06 10:10:14 2019 -0400
+++ b/mercurial/sslutil.py	Sun Oct 06 10:51:16 2019 -0400
@@ -383,11 +383,11 @@
             sslkeylog.set_keylog(
                 pycompat.fsdecode(encoding.environ[b'SSLKEYLOGFILE'])
             )
-            ui.warn(
+            ui.warnnoi18n(
                 b'sslkeylog enabled by SSLKEYLOGFILE environment variable\n'
             )
         except ImportError:
-            ui.warn(
+            ui.warnnoi18n(
                 b'sslkeylog module missing, '
                 b'but SSLKEYLOGFILE set in environment\n'
             )