diff --git a/src/db.rs b/src/db.rs
index aa5ee8e..d8afdbe 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -66,7 +66,7 @@ where
 
         let compress_lvl = opts.compress_lvl;
         let current_buf_size = opts.current_buf_size;
-        
+
         let table: Vec<LSize> = vec![];
 
         Ok(Self {
@@ -83,7 +83,7 @@ where
         let pos: LSize = self.data_buf.position() as LSize;
 
         let item_data = bincode::encode_to_vec(item, BINCODE_CFG).str_err()?;
-        
+
         let cur_buf_raw: Vec<u8> = Vec::with_capacity(self.current_buf_size);
         let cur_buf_raw = Cursor::new(cur_buf_raw);
         let mut zencoder = zstd::stream::raw::Encoder::new(self.compress_lvl).str_err()?;
@@ -99,7 +99,7 @@ where
         self.table.push(pos);
         let (mut cur_buf_raw, _) = cur_buf_z.into_inner();
         let size = cur_buf_raw.position();
-        
+
         cur_buf_raw.set_position(0);
         let mut chunk_reader = cur_buf_raw.take(size);
         io::copy(&mut chunk_reader, &mut self.data_buf).str_err()?;
@@ -190,8 +190,10 @@ where
             let tab_pos: u64 = (index * LEN_SIZE).try_into().str_err()?;
             let mut pos_curr_data: [u8; LEN_SIZE] = [0; LEN_SIZE];
             let cur_pos = self.input.stream_position().str_err()? as i64;
-            self.input.seek_relative((tab_pos as i64) - cur_pos).str_err()?;
-            
+            self.input
+                .seek_relative((tab_pos as i64) - cur_pos)
+                .str_err()?;
+
             self.input.read_exact(&mut pos_curr_data).str_err()?;
             LSize::from_le_bytes(pos_curr_data)
         };
@@ -220,7 +222,6 @@ where
     pub fn iter(&mut self) -> ReaderIter<'_, T> {
         ReaderIter::new(self)
     }
-
 }
 
 pub struct ReaderIter<'a, T>
@@ -316,14 +317,19 @@ mod test {
     }
 
     fn gen_data(count: usize) -> impl Iterator<Item = TestData> {
-        (0..count).into_iter().map(|i| TestData{ num: i as u64})
+        (0..count).into_iter().map(|i| TestData { num: i as u64 })
     }
 
     #[test]
     fn test_write_read() {
         let dir = tempdir().expect("tempdir");
         let tmpfile = dir.path().join("test.tmp");
-        let opts = WriterOpts { compress_lvl: 1, data_buf_size: 10 * 1024 * 1024, out_buf_size: 10 * 1024 * 1024, current_buf_size: 4096 };
+        let opts = WriterOpts {
+            compress_lvl: 1,
+            data_buf_size: 10 * 1024 * 1024,
+            out_buf_size: 10 * 1024 * 1024,
+            current_buf_size: 4096,
+        };
         let mut writer: Writer<TestData> = Writer::new(&tmpfile, opts).expect("new writer");
 
         let items_iter = gen_data(5);
@@ -335,7 +341,7 @@ mod test {
         let mut reader: Reader<TestData> = Reader::new(&tmpfile, 2048).expect("new reader");
         assert_eq!(items.len(), reader.len());
 
-        for (idx,item) in items.iter().enumerate() {
+        for (idx, item) in items.iter().enumerate() {
             let ritem = reader.get(idx).expect("get");
             assert_eq!(*item, ritem);
         }
@@ -345,7 +351,12 @@ mod test {
     fn test_write_read_iter() {
         let dir = tempdir().expect("tempdir");
         let tmpfile = dir.path().join("test.tmp");
-        let opts = WriterOpts { compress_lvl: 1, data_buf_size: 10 * 1024 * 1024, out_buf_size: 10 * 1024 * 1024, current_buf_size: 4096 };
+        let opts = WriterOpts {
+            compress_lvl: 1,
+            data_buf_size: 10 * 1024 * 1024,
+            out_buf_size: 10 * 1024 * 1024,
+            current_buf_size: 4096,
+        };
         let mut writer: Writer<TestData> = Writer::new(&tmpfile, opts).expect("new writer");
 
         let items_iter = gen_data(10);