diff -r 84bf6ded9317 -r d06834e0f48e mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Wed Aug 29 16:43:17 2018 -0700
+++ b/mercurial/debugcommands.py	Wed Aug 29 15:17:11 2018 -0700
@@ -3240,7 +3240,7 @@
                     res = e.callcommand(command, args).result()
 
                 if isinstance(res, wireprotov2peer.commandresponse):
-                    val = list(res.cborobjects())
+                    val = res.objects()
                     ui.status(_('response: %s\n') %
                               stringutil.pprint(val, bprefix=True, indent=2))
                 else: