diff -r 6e90c59b6da1 -r 5b5cc44b2cdc tests/test-fncache.t
--- a/tests/test-fncache.t	Thu Mar 01 23:54:52 2018 +0530
+++ b/tests/test-fncache.t	Thu Mar 01 23:57:16 2018 +0530
@@ -236,7 +236,7 @@
   >             wlock.release()
   > 
   > def extsetup(ui):
-  >     extensions.wrapcommand(commands.table, "commit", commitwrap)
+  >     extensions.wrapcommand(commands.table, b"commit", commitwrap)
   > EOF
   $ extpath=`pwd`/exceptionext.py
   $ hg init fncachetxn