--- a/tests/test-hardlinks.t	Fri Sep 14 14:56:13 2018 -0700
+++ b/tests/test-hardlinks.t	Sun Oct 14 09:34:21 2018 +0000
@@ -19,8 +19,9 @@
   $ cat > linkcp.py <<EOF
   > from __future__ import absolute_import
   > import sys
-  > from mercurial import util
-  > util.copyfiles(sys.argv[1], sys.argv[2], hardlink=True)
+  > from mercurial import pycompat, util
+  > util.copyfiles(pycompat.fsencode(sys.argv[1]),
+  >                pycompat.fsencode(sys.argv[2]), hardlink=True)
   > EOF
 
   $ linkcp()