diff -r c302218a2528 -r 1db5ae4b0dda mercurial/fileset.py
--- a/mercurial/fileset.py	Sun Feb 10 14:16:33 2019 -0800
+++ b/mercurial/fileset.py	Sun Feb 10 14:16:37 2019 -0800
@@ -540,8 +540,7 @@
     def never(self):
         """Create a matcher to select nothing"""
         repo = self.ctx.repo()
-        return matchmod.nevermatcher(repo.root, repo.getcwd(),
-                                     badfn=self._badfn)
+        return matchmod.never(repo.root, repo.getcwd(), badfn=self._badfn)
 
 def match(ctx, expr, badfn=None):
     """Create a matcher for a single fileset expression"""