Fix nighly Rust warnings.

src/data_set.rs

@@ -1,5 +1,5 @@
 use std::{
-    cmp::{Ord, Ordering},
+    cmp::Ordering,
     hash::Hasher,
     slice::{Iter, IterMut},
 };

src/datagram.rs

@@ -165,7 +165,7 @@ impl AsRef<Header> for Datagram {
 mod tests {
     use super::*;
 
-    use crate::{header::Header, id_hash, utils::utc_timestamp};
+    use crate::{id_hash, utils::utc_timestamp};
 
     #[test]
     fn test_id_hash() {

src/live_data_decoder.rs

@@ -170,7 +170,6 @@ mod tests {
     use super::*;
 
     use crate::{
-        stream_blob_length::StreamBlobLength::{BlobLength, Malformed, Partial},
         test_data::{LIVE_DATA_1, LIVE_TELEGRAM_1},
         test_utils::to_hex_string,
         utils::utc_timestamp,

src/recording_encoder.rs

@@ -97,7 +97,6 @@ mod tests {
         recording_decoder::data_from_checked_bytes,
         test_data::{RECORDING_1, RECORDING_3, TELEGRAM_RECORDING_1},
         test_utils::to_hex_string,
-        utils::utc_timestamp,
     };
 
     #[test]

src/specification.rs

@@ -1,6 +1,6 @@
 //! This module provides the `Specification` and its associated types to allow interpretation
 //! of the fields contained within the `frame_data` payload of `Packet` values.
-use std::{cell::RefCell, clone::Clone, fmt, rc::Rc};
+use std::{cell::RefCell, fmt, rc::Rc};
 
 use chrono::{DateTime, TimeZone};