Avoid warnings.

src/any.rs

@@ -16,12 +16,16 @@ use crate::engine::Map;
 use crate::stdlib::{
     any::{type_name, Any, TypeId},
     boxed::Box,
-    collections::HashMap,
     fmt,
     string::String,
-    vec::Vec,
 };
 
+#[cfg(not(feature = "no_object"))]
+use crate::stdlib::collections::HashMap;
+
+#[cfg(not(feature = "no_index"))]
+use crate::stdlib::vec::Vec;
+
 #[cfg(not(feature = "no_std"))]
 #[cfg(not(target_arch = "wasm32"))]
 use crate::stdlib::time::Instant;