chore: ignore unhelpful lint (#301)

This is here for destructor reasons. This lint is incorrect and
unhelpful.

examples/cat.rs

@@ -43,6 +43,6 @@ fn main() {
         }
 
         // Include a new line
-        println!("");
+        println!();
     });
 }

examples/tcp_listener.rs

@@ -38,7 +38,7 @@ fn main() {
                     }
 
                     let (res, slice) = stream.write_all(buf.slice(..read)).await;
-                    let _ = res.unwrap();
+                    res.unwrap();
                     buf = slice.into_inner();
                     println!("{} all {} bytes ping-ponged", socket_addr, read);
                     n += read;

examples/tcp_listener_fixed_buffers.rs

@@ -89,7 +89,7 @@ async fn echo_handler<T: IoBufMut>(
 
             let (res, nslice) = stream.write_fixed_all(fbuf1.slice(..read)).await;
 
-            let _ = res.unwrap();
+            res.unwrap();
             println!("peer {} all {} bytes ping-ponged", peer, read);
             n += read;
 

examples/wrk-bench.rs

@@ -2,10 +2,10 @@ use std::io;
 use std::rc::Rc;
 use tokio::task::JoinHandle;
 
-pub const RESPONSE: &'static [u8] =
+pub const RESPONSE: &[u8] =
     b"HTTP/1.1 200 OK\nContent-Type: text/plain\nContent-Length: 12\n\nHello world!";
 
-pub const ADDRESS: &'static str = "127.0.0.1:8080";
+pub const ADDRESS: &str = "127.0.0.1:8080";
 
 fn main() -> io::Result<()> {
     tokio_uring::start(async {

src/io/accept.rs

@@ -47,7 +47,7 @@ impl Completable for Accept {
         let socket = Socket { fd };
         let (_, addr) = unsafe {
             socket2::SockAddr::init(move |addr_storage, len| {
-                *addr_storage = self.socketaddr.0.to_owned();
+                self.socketaddr.0.clone_into(&mut *addr_storage);
                 *len = self.socketaddr.1;
                 Ok(())
             })?

src/io/shared_fd.rs

@@ -94,7 +94,7 @@ impl SharedFd {
                 }
                 State::WaitingForUniqueness(waker) => {
                     if !waker.will_wake(cx.waker()) {
-                        *waker = cx.waker().clone();
+                        waker.clone_from(cx.waker());
                     }
 
                     Poll::Pending

src/lib.rs

@@ -57,6 +57,7 @@
 //! call `close()`.
 
 #![warn(missing_docs)]
+#![allow(clippy::thread_local_initializer_can_be_made_const)]
 
 macro_rules! syscall {
     ($fn: ident ( $($arg: expr),* $(,)* ) ) => {{

src/runtime/driver/op/mod.rs

@@ -156,6 +156,7 @@ pub(crate) trait Updateable: Completable {
     fn update(&mut self, cqe: CqeResult);
 }
 
+#[allow(dead_code)]
 pub(crate) enum Lifecycle {
     /// The operation has been submitted to uring and is currently in-flight
     Submitted,

tests/fs_file.rs

@@ -3,8 +3,6 @@ use std::{
     os::unix::io::{AsRawFd, FromRawFd, RawFd},
 };
 
-use libc;
-
 use tempfile::NamedTempFile;
 
 use tokio_uring::buf::fixed::FixedBufRegistry;