chore: sprinkle clippy-allow to get clippy passing

arrow-data/src/ffi.rs

@@ -313,6 +313,7 @@ mod tests {
     // More tests located in top-level arrow crate
 
     #[test]
+    #[allow(unused_must_use)]
     fn null_array_n_buffers() {
         let data = ArrayData::new_null(&DataType::Null, 10);
 

arrow-ipc/src/writer.rs

@@ -2559,6 +2559,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::needless_borrows_for_generic_args)]
     fn test_decimal128_alignment16_is_sufficient() {
         const IPC_ALIGNMENT: usize = 16;
 
@@ -2618,6 +2619,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::needless_borrows_for_generic_args)]
     fn test_decimal128_alignment8_is_unaligned() {
         const IPC_ALIGNMENT: usize = 8;
 
@@ -2675,6 +2677,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::needless_borrows_for_generic_args)]
     fn test_flush() {
         // We write a schema which is small enough to fit into a buffer and not get flushed,
         // and then force the write with .flush().

arrow-ord/src/sort.rs

@@ -402,6 +402,7 @@ fn sort_fixed_size_list(
     Ok(sort_impl(options, &mut valids, &null_indices, limit, Ord::cmp).into())
 }
 
+#[allow(clippy::needless_maybe_sized)]
 #[inline(never)]
 fn sort_impl<T: ?Sized + Copy>(
     options: SortOptions,

arrow-schema/src/fields.rs

@@ -387,6 +387,7 @@ impl UnionFields {
     {
         let fields = fields.into_iter().map(Into::into);
         let mut set = 0_u128;
+        #[allow(clippy::manual_inspect)]
         type_ids
             .into_iter()
             .map(|idx| {

parquet/src/arrow/arrow_writer/mod.rs

@@ -3034,6 +3034,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::byte_char_slices)]
     fn test_disabled_statistics_with_page() {
         let file_schema = Schema::new(vec![
             Field::new("a", DataType::Utf8, true),
@@ -3106,6 +3107,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::byte_char_slices)]
     fn test_disabled_statistics_with_chunk() {
         let file_schema = Schema::new(vec![
             Field::new("a", DataType::Utf8, true),

parquet/src/data_type.rs

@@ -1297,6 +1297,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::byte_char_slices)]
     fn test_byte_array_from() {
         assert_eq!(
             ByteArray::from(vec![b'A', b'B', b'C']).data(),

parquet/src/file/metadata/writer.rs

@@ -55,6 +55,7 @@ impl<'a, W: Write> ThriftMetadataWriter<'a, W> {
         // write offset index to the file
         for (row_group_idx, row_group) in self.row_groups.iter_mut().enumerate() {
             for (column_idx, column_metadata) in row_group.columns.iter_mut().enumerate() {
+                #[allow(clippy::single_match)]
                 match &offset_indexes[row_group_idx][column_idx] {
                     Some(offset_index) => {
                         let start_offset = self.buf.bytes_written();
@@ -84,6 +85,7 @@ impl<'a, W: Write> ThriftMetadataWriter<'a, W> {
         // write column index to the file
         for (row_group_idx, row_group) in self.row_groups.iter_mut().enumerate() {
             for (column_idx, column_metadata) in row_group.columns.iter_mut().enumerate() {
+                #[allow(clippy::single_match)]
                 match &column_indexes[row_group_idx][column_idx] {
                     Some(column_index) => {
                         let start_offset = self.buf.bytes_written();

parquet/src/schema/types.rs

@@ -294,6 +294,7 @@ impl<'a> PrimitiveTypeBuilder<'a> {
             ));
         }
 
+        #[allow(clippy::single_match)]
         match &self.logical_type {
             Some(logical_type) => {
                 // If a converted type is populated, check that it is consistent with