Silence criterion related warnings

Author: pepijnve

arrow-array/benches/record_batch.rs

@@ -15,11 +15,12 @@
 // specific language governing permissions and limitations
 // under the License.
 
+use std::hint::black_box;
 use arrow_array::{ArrayRef, Int64Array, RecordBatch, RecordBatchOptions};
 use arrow_schema::{DataType, Field, Schema, SchemaRef};
-use criterion::*;
 use num_integer::Integer;
 use std::sync::Arc;
+use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
 
 fn make_record_batch(column_count: usize, row_count: usize) -> RecordBatch {
     let fields = (0..column_count)

arrow-array/benches/view_types.rs

@@ -15,8 +15,9 @@
 // specific language governing permissions and limitations
 // under the License.
 
+use std::hint::black_box;
+use criterion::{criterion_group, criterion_main, Criterion};
 use arrow_array::StringViewArray;
-use criterion::*;
 
 fn gen_view_array(size: usize) -> StringViewArray {
     StringViewArray::from_iter((0..size).map(|v| match v % 3 {