diff -r 9540945e51fd -r e2139e071b5c mercurial/upgrade.py
--- a/mercurial/upgrade.py	Wed Dec 30 14:56:34 2020 +0530
+++ b/mercurial/upgrade.py	Mon Dec 14 16:15:01 2020 +0530
@@ -225,7 +225,7 @@
                 )
             if not (backup or backuppath is None):
                 ui.status(
-                    _(b'removing old repository content%s\n') % backuppath
+                    _(b'removing old repository content %s\n') % backuppath
                 )
                 repo.vfs.rmtree(backuppath, forcibly=True)
                 backuppath = None