--- a/mercurial/cmdutil.py	Fri Apr 28 00:49:30 2017 +0530
+++ b/mercurial/cmdutil.py	Fri Apr 21 02:20:46 2017 +0530
@@ -115,6 +115,7 @@
 def dorecord(ui, repo, commitfunc, cmdsuggest, backupall,
             filterfn, *pats, **opts):
     from . import merge as mergemod
+    opts = pycompat.byteskwargs(opts)
     if not ui.interactive():
         if cmdsuggest:
             msg = _('running non-interactively, use %s instead') % cmdsuggest