THRIFT-5158 Update Rust generator and Rust lib,test,tutorial to only support 2018 edition
Client: rs
Patch: Allen George

This closes #2078
diff --git a/lib/rs/test/Makefile.am b/lib/rs/test/Makefile.am
index 486188c..5dc4f56 100644
--- a/lib/rs/test/Makefile.am
+++ b/lib/rs/test/Makefile.am
@@ -41,6 +41,8 @@
 	-$(RM) src/base_two.rs
 	-$(RM) src/midlayer.rs
 	-$(RM) src/ultimate.rs
+	-$(RM) src/recursive.rs
+	-$(RM) src/identifiers.rs
 	-$(RM) -r bin
 
 EXTRA_DIST = \