diff --git a/vm/src/builtins/object.rs b/vm/src/builtins/object.rs
index 902ab8d89..127351cba 100644
--- a/vm/src/builtins/object.rs
+++ b/vm/src/builtins/object.rs
@@ -37,12 +37,14 @@ impl PyBaseObject {
         };
 
         // Ensure that all abstract methods are implemented before instantiating instance.
-        if let Some(abs_methods) = cls.get_attr("__abstractmethods__"){
+        if let Some(abs_methods) = cls.get_attr("__abstractmethods__") {
             if let Some(iter) = vm.get_method(abs_methods, "__len__") {
                 let values = vm.invoke(&iter?, ())?;
                 let unimplemented_abstract_method_count = super::int::get_value(&values);
                 if unimplemented_abstract_method_count > &BigInt::from(0) {
-                    return Err(vm.new_type_error("You must implement the abstract methods".to_owned()));
+                    return Err(
+                        vm.new_type_error("You must implement the abstract methods".to_owned())
+                    );
                 }
             }
         }