Fix builds.

src/dynamic.rs

@@ -508,6 +508,8 @@ impl Hash for Dynamic {
             Union::Int(ref i, _, _) => i.hash(state),
             #[cfg(not(feature = "no_float"))]
             Union::Float(ref f, _, _) => f.hash(state),
+            #[cfg(feature = "decimal")]
+            Union::Decimal(ref d, _, _) => d.hash(state),
             #[cfg(not(feature = "no_index"))]
             Union::Array(ref a, _, _) => a.as_ref().hash(state),
             #[cfg(not(feature = "no_object"))]
@@ -522,10 +524,11 @@ impl Hash for Dynamic {
             #[cfg(feature = "sync")]
             Union::Shared(ref cell, _, _) => (*cell.read().unwrap()).hash(state),
 
+            Union::Variant(ref _value, _, _) => {
                 #[cfg(not(feature = "only_i32"))]
                 #[cfg(not(feature = "only_i64"))]
-            Union::Variant(ref value, _, _) => {
+                {
-                let value_any = (***value).as_any();
+                    let value_any = (***_value).as_any();
                     let type_id = value_any.type_id();
 
                     if type_id == TypeId::of::<u8>() {
@@ -564,6 +567,9 @@ impl Hash for Dynamic {
                     }
                 }
 
+                unimplemented!("a custom type cannot be hashed")
+            }
+
             #[cfg(not(feature = "no_std"))]
             Union::TimeStamp(_, _, _) => unimplemented!("{} cannot be hashed", self.type_name()),
         }

src/engine.rs

@@ -669,6 +669,7 @@ impl EvalState {
             scope_level: 0,
             operations: 0,
             modules: 0,
+            #[cfg(not(feature = "no_module"))]
             resolver: None,
             fn_resolution_caches: Vec::new(),
         }

src/packages/string_basic.rs

@@ -173,6 +173,10 @@ mod number_formatting {
     pub fn int_to_octal(value: INT) -> ImmutableString {
         to_octal(value)
     }
+    #[rhai_fn(name = "to_binary")]
+    pub fn int_to_binary(value: INT) -> ImmutableString {
+        to_binary(value)
+    }
 
     #[cfg(not(feature = "only_i32"))]
     #[cfg(not(feature = "only_i64"))]