Fix clippy

Author: espindola

src/error/mod.rs

@@ -315,14 +315,10 @@ impl From<PacketCodecError> for IoError {
     fn from(err: PacketCodecError) -> Self {
         match err {
             PacketCodecError::Io(err) => err.into(),
-            PacketCodecError::PacketTooLarge => {
-                io::Error::new(io::ErrorKind::Other, "packet too large").into()
-            }
-            PacketCodecError::PacketsOutOfSync => {
-                io::Error::new(io::ErrorKind::Other, "packet out of order").into()
-            }
+            PacketCodecError::PacketTooLarge => io::Error::other("packet too large").into(),
+            PacketCodecError::PacketsOutOfSync => io::Error::other("packet out of order").into(),
             PacketCodecError::BadCompressedPacketHeader => {
-                io::Error::new(io::ErrorKind::Other, "bad compressed packet header").into()
+                io::Error::other("bad compressed packet header").into()
             }
         }
     }

src/io/mod.rs

@@ -26,7 +26,7 @@ use std::{
     future::Future,
     io::{
         self,
-        ErrorKind::{BrokenPipe, NotConnected, Other},
+        ErrorKind::{BrokenPipe, NotConnected},
     },
     mem::replace,
     net::SocketAddr,
@@ -141,7 +141,7 @@ impl Future for CheckTcpStream<'_> {
                 let mut buf = [0_u8; 1];
                 match self.0.try_read(&mut buf) {
                     Ok(0) => Poll::Ready(Err(io::Error::new(BrokenPipe, "broken pipe"))),
-                    Ok(_) => Poll::Ready(Err(io::Error::new(Other, "stream should be empty"))),
+                    Ok(_) => Poll::Ready(Err(io::Error::other("stream should be empty"))),
                     Err(err) if err.kind() == io::ErrorKind::WouldBlock => Poll::Ready(Ok(())),
                     Err(err) => Poll::Ready(Err(err)),
                 }

src/queryable/query_result/mod.rs

@@ -100,8 +100,8 @@ where
         self.conn
             .get_pending_result()
             .map(|pending_result| match pending_result {
-                Some(PendingResult::Pending(meta)) => meta.columns().len() > 0,
-                Some(PendingResult::Taken(meta)) => meta.columns().len() > 0,
+                Some(PendingResult::Pending(meta)) => !meta.columns().is_empty(),
+                Some(PendingResult::Taken(meta)) => !meta.columns().is_empty(),
                 None => false,
             })
             .unwrap_or(false)