diff -r edaa40dc5fe5 -r 5ccd791344f3 tests/test-check-interfaces.py
--- a/tests/test-check-interfaces.py	Fri Sep 21 21:44:27 2018 -0400
+++ b/tests/test-check-interfaces.py	Tue Sep 18 15:15:24 2018 -0700
@@ -184,7 +184,7 @@
     checkzobject(fl, allowextra=True)
 
     # Conforms to imanifestlog.
-    ml = manifest.manifestlog(vfs, repo)
+    ml = manifest.manifestlog(vfs, repo, manifest.manifestrevlog(repo.svfs))
     checkzobject(ml)
     checkzobject(repo.manifestlog)