diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -63,6 +63,7 @@ class localrepository(repo.repository):
                     )
                 if self.ui.configbool('format', 'generaldelta', False):
                     requirements.append("generaldelta")
+                requirements = set(requirements)
             else:
                 raise error.RepoError(_("repository %s not found") % path)
         elif create:
diff --git a/tests/test-init.t b/tests/test-init.t
--- a/tests/test-init.t
+++ b/tests/test-init.t
@@ -19,8 +19,8 @@ creating 'local'
   store created
   00changelog.i created
   revlogv1
+  fncache
   store
-  fncache
   dotencode
   $ echo this > local/foo
   $ hg ci --cwd local -A -m "init"
@@ -48,8 +48,8 @@ creating repo with format.dotencode=fals
   store created
   00changelog.i created
   revlogv1
+  fncache
   store
-  fncache
 
 test failure
 
@@ -145,8 +145,8 @@ creating 'local/sub/repo'
   store created
   00changelog.i created
   revlogv1
+  fncache
   store
-  fncache
   dotencode
 
 prepare test of init of url configured from paths
@@ -162,8 +162,8 @@ init should (for consistency with clone)
   store created
   00changelog.i created
   revlogv1
+  fncache
   store
-  fncache
   dotencode
 
 verify that clone also expand urls
@@ -175,8 +175,8 @@ verify that clone also expand urls
   store created
   00changelog.i created
   revlogv1
+  fncache
   store
-  fncache
   dotencode
 
 clone bookmarks