Add begin/end iterators to rust::Vec
diff --git a/gen/write.rs b/gen/write.rs
index d963bb9..f67057b 100644
--- a/gen/write.rs
+++ b/gen/write.rs
@@ -147,6 +147,7 @@
             }
             Type::RustVec(_) => {
                 out.include.array = true;
+                out.include.type_traits = true;
                 needs_rust_vec = true;
             }
             Type::Str(_) => {