--- a/.hgignore	Fri Sep 28 12:56:57 2018 -0700
+++ b/.hgignore	Mon Sep 24 15:54:18 2018 +0900
@@ -56,6 +56,7 @@
 hgext/__index__.py
 
 rust/target/
+rust/*/target/
 
 # Generated wheels
 wheelhouse/