diff -r f83600efa1ca -r f2f9bacf0587 mercurial/logcmdutil.py
--- a/mercurial/logcmdutil.py	Mon Jul 02 11:14:13 2018 -0700
+++ b/mercurial/logcmdutil.py	Wed Jul 04 12:12:49 2018 -0700
@@ -228,7 +228,7 @@
 
         if self.ui.debugflag and rev is not None:
             mnode = ctx.manifestnode()
-            mrev = self.repo.manifestlog._revlog.rev(mnode)
+            mrev = self.repo.manifestlog.rev(mnode)
             self.ui.write(columns['manifest']
                           % scmutil.formatrevnode(self.ui, mrev, mnode),
                           label='ui.debug log.manifest')