--- a/mercurial/admin_commands.py	Mon May 06 16:16:15 2024 +0200
+++ b/mercurial/admin_commands.py	Mon May 06 16:29:00 2024 +0200
@@ -47,4 +47,4 @@
         ui.status(_(b"running %s\n") % name)
         errors = func()
         if errors:
-            ui.warn(_(b"found %d errors\n") % len(errors))
+            ui.warn(_(b"found %d errors\n") % errors)