Update test

Author: emilk

arrow-array/src/builder/struct_builder.rs

@@ -62,7 +62,7 @@ use std::sync::Arc;
 ///
 ///   // We can't obtain the ListBuilder<StructBuilder> with the expected generic types, because under the hood
 ///   // the StructBuilder was returned as a Box<dyn ArrayBuilder> and passed as such to the ListBuilder constructor
-///   
+///
 ///   // This panics in runtime, even though we know that the builder is a ListBuilder<StructBuilder>.
 ///   // let sb = col_struct_builder
 ///   //     .field_builder::<ListBuilder<StructBuilder>>(0)
@@ -648,7 +648,7 @@ mod tests {
 
     #[test]
     #[should_panic(
-        expected = "StructBuilder (Schema { fields: [Field { name: \"f1\", data_type: Int32, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }, Field { name: \"f2\", data_type: Boolean, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} }) and field_builder with index 1 (Boolean) are of unequal lengths: (2 != 1)."
+        expected = "StructBuilder (Schema { fields: [Field { \"f1\": Int32 }, Field { \"f2\": Boolean }], metadata: {} }) and field_builder with index 1 (Boolean) are of unequal lengths: (2 != 1)."
     )]
     fn test_struct_array_builder_unequal_field_builders_lengths() {
         let mut int_builder = Int32Builder::with_capacity(10);