Small fixes courtesy of clippy

src/codec/packet_decode.rs

@@ -77,7 +77,7 @@ impl PacketDecode {
     /// Decode a `mpint` as a scalar in unsigned big endian with given length.
     pub fn get_scalar(&mut self, len: usize) -> Result<Vec<u8>> {
         let mut bytes = self.get_bytes()?;
-        while bytes.get(0) == Some(&0) {
+        while bytes.first() == Some(&0) {
             bytes.advance(1);
         }
 

src/codec/send_pipe.rs

@@ -40,7 +40,7 @@ impl SendPipe {
 
     pub fn feed_packet(&mut self, payload: &[u8]) -> u32 {
         log::trace!("feed packet {}, len {}, seq {}",
-            payload.get(0).cloned().unwrap_or(0), payload.len(), self.packet_seq);
+            payload.first().cloned().unwrap_or(0), payload.len(), self.packet_seq);
 
         let include_len = match self.encrypt {
             PacketEncrypt::EncryptAndMac(_, _) => true,

src/host_file.rs

@@ -136,7 +136,7 @@ impl File {
     /// Comments and invalid lines are not returned by this method.
     pub fn entries(&self) -> impl Iterator<Item = &Entry> {
         self.lines.iter().filter_map(|line| match &line.content {
-            LineContent::Entry(entry) => Some(&*entry as &Entry),
+            LineContent::Entry(entry) => Some(entry as &Entry),
             LineContent::Comment | LineContent::Error(_) => None,
         })
     }
@@ -596,7 +596,7 @@ fn read_field<'b>(bytes: &mut &'b [u8]) -> Option<&'b [u8]> {
     consume_whitespace(bytes);
 
     // '#' starts a comment, which should be ignored
-    if matches!(bytes.get(0), None | Some(b'#')) {
+    if matches!(bytes.first(), None | Some(b'#')) {
         return None
     }
 

src/lib.rs

@@ -12,6 +12,7 @@
 #![allow(clippy::unused_unit)]
 #![allow(clippy::unit_arg)]
 #![allow(clippy::module_inception)]
+#![allow(clippy::type_complexity)]
 #![warn(missing_docs)]
 
 pub use crate::client::{