--- a/rust/hg-cpython/src/exceptions.rs	Sat Oct 19 16:48:34 2019 +0900
+++ b/rust/hg-cpython/src/exceptions.rs	Sat Oct 19 17:01:28 2019 +0900
@@ -40,5 +40,3 @@
 }
 
 py_exception!(rustext, HgPathPyError, RuntimeError);
-
-py_exception!(shared_ref, AlreadyBorrowed, RuntimeError);