diff -r 43815d87c6aa -r 66651ec259ea hgext/rebase.py
--- a/hgext/rebase.py	Wed Mar 07 19:57:50 2018 -0800
+++ b/hgext/rebase.py	Mon Mar 05 00:18:07 2018 -0500
@@ -488,7 +488,7 @@
                 with ui.configoverride(overrides, 'rebase'):
                     stats = rebasenode(repo, rev, p1, base, self.collapsef,
                                        dest, wctx=self.wctx)
-                    if stats and stats[3] > 0:
+                    if stats[3] > 0:
                         if self.wctx.isinmemory():
                             raise error.InMemoryMergeConflictsError()
                         else: