mercurial/hg.py

--- a/mercurial/hg.py	Thu Mar 22 21:19:31 2018 +0900
+++ b/mercurial/hg.py	Thu Mar 22 21:56:20 2018 +0900
@@ -48,6 +48,10 @@
     vfs as vfsmod,
 )
 
+from .utils import (
+    stringutil,
+)
+
 release = lock.release
 
 # shared features
@@ -270,7 +274,7 @@
             # ValueError is raised on Windows if the drive letters differ on
             # each path
             raise error.Abort(_('cannot calculate relative path'),
-                              hint=util.forcebytestr(e))
+                              hint=stringutil.forcebytestr(e))
     else:
         requirements += 'shared\n'