diff --git a/hyper/src/body/body.rs b/hyper/src/body/body.rs
index 02b9b69..859e4b8 100644
--- a/hyper/src/body/body.rs
+++ b/hyper/src/body/body.rs
@@ -6,14 +6,13 @@ use bytes::Bytes;
 use futures_channel::mpsc;
 use futures_channel::oneshot;
 use futures_core::Stream;
-#[cfg(feature = "stream")]
-use futures_util::TryStreamExt;
+
 use http::HeaderMap;
 use http_body::{Body as HttpBody, SizeHint};
 use super::DecodedLength;
 #[cfg(feature = "stream")]
 use crate::common::sync_wrapper::SyncWrapper;
-use crate::common::Future;
+
 #[cfg(all(feature = "client", any(feature = "http1", feature = "http2")))]
 use crate::common::Never;
 use crate::common::{task, watch, Pin, Poll};
diff --git a/hyper/src/body/mod.rs b/hyper/src/body/mod.rs
index cb11124..d3d9f8b 100644
--- a/hyper/src/body/mod.rs
+++ b/hyper/src/body/mod.rs
@@ -25,13 +25,6 @@ mod aggregate;
 mod body;
 mod length;
 mod to_bytes;
-/// An optimization to try to take a full body if immediately available.
-///
-/// This is currently limited to *only* `hyper::Body`s.
-#[cfg(feature = "http1")]
-pub(crate) fn take_full_data<T: HttpBody + 'static>(body: &mut T) -> Option<T::Data> {
-    loop {}
-}
 fn _assert_send_sync() {
     loop {}
 }
diff --git a/hyper/src/body/to_bytes.rs b/hyper/src/body/to_bytes.rs
index 802dc26..8a90fa3 100644
--- a/hyper/src/body/to_bytes.rs
+++ b/hyper/src/body/to_bytes.rs
@@ -1,4 +1,4 @@
-use bytes::{Buf, BufMut, Bytes};
+use bytes::{Bytes};
 use super::HttpBody;
 /// Concatenate the buffers from a body into a single `Bytes` asynchronously.
 ///
diff --git a/hyper/src/client/client.rs b/hyper/src/client/client.rs
index 5445091..39de2a6 100644
--- a/hyper/src/client/client.rs
+++ b/hyper/src/client/client.rs
@@ -1,17 +1,17 @@
 use std::error::Error as StdError;
 use std::fmt;
-use std::mem;
+
 use std::time::Duration;
-use futures_channel::oneshot;
+
 use futures_util::future::{self, Either, FutureExt as _, TryFutureExt as _};
-use http::header::{HeaderValue, HOST};
+
 use http::uri::{Port, Scheme};
-use http::{Method, Request, Response, Uri, Version};
-use tracing::{debug, trace, warn};
+use http::{Request, Response, Uri, Version};
+use tracing::{debug, trace};
 use super::conn;
 use super::connect::{self, sealed::Connect, Alpn, Connected, Connection};
 use super::pool::{
-    self, CheckoutIsClosedError, Key as PoolKey, Pool, Poolable, Pooled, Reservation,
+    self, Key as PoolKey, Pool, Poolable, Pooled, Reservation,
 };
 #[cfg(feature = "tcp")]
 use super::HttpConnector;
diff --git a/hyper/src/client/conn.rs b/hyper/src/client/conn.rs
index 649c888..e64601c 100644
--- a/hyper/src/client/conn.rs
+++ b/hyper/src/client/conn.rs
@@ -57,7 +57,7 @@ use std::error::Error as StdError;
 use std::fmt;
 #[cfg(not(all(feature = "http1", feature = "http2")))]
 use std::marker::PhantomData;
-use std::sync::Arc;
+
 #[cfg(all(feature = "runtime", feature = "http2"))]
 use std::time::Duration;
 use bytes::Bytes;
@@ -77,8 +77,7 @@ use crate::common::{
 };
 use crate::proto;
 use crate::rt::Executor;
-#[cfg(feature = "http1")]
-use crate::upgrade::Upgraded;
+
 use crate::{Body, Request, Response};
 #[cfg(feature = "http1")]
 type Http1Dispatcher<T, B> = proto::dispatch::Dispatcher<
diff --git a/hyper/src/client/connect/dns.rs b/hyper/src/client/connect/dns.rs
index 3327bbe..b2a0da4 100644
--- a/hyper/src/client/connect/dns.rs
+++ b/hyper/src/client/connect/dns.rs
@@ -24,7 +24,7 @@
 use std::error::Error;
 use std::future::Future;
 use std::net::{
-    Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6, ToSocketAddrs,
+    Ipv4Addr, Ipv6Addr, SocketAddr,
 };
 use std::pin::Pin;
 use std::str::FromStr;
@@ -32,7 +32,7 @@ use std::task::{self, Poll};
 use std::{fmt, io, vec};
 use tokio::task::JoinHandle;
 use tower_service::Service;
-use tracing::debug;
+
 pub(super) use self::sealed::Resolve;
 /// A domain name to resolve into IP addresses.
 #[derive(Clone, Hash, Eq, PartialEq)]
diff --git a/hyper/src/client/connect/http.rs b/hyper/src/client/connect/http.rs
index 6577e97..c029282 100644
--- a/hyper/src/client/connect/http.rs
+++ b/hyper/src/client/connect/http.rs
@@ -8,13 +8,13 @@ use std::pin::Pin;
 use std::sync::Arc;
 use std::task::{self, Poll};
 use std::time::Duration;
-use futures_util::future::Either;
-use http::uri::{Scheme, Uri};
+
+use http::uri::{Uri};
 use pin_project_lite::pin_project;
 use tokio::net::{TcpSocket, TcpStream};
 use tokio::time::Sleep;
-use tracing::{debug, trace, warn};
-use super::dns::{self, resolve, GaiResolver, Resolve};
+use tracing::{warn};
+use super::dns::{self, GaiResolver, Resolve};
 use super::{Connected, Connection};
 /// A connector for the `http` scheme.
 ///
diff --git a/hyper/src/client/dispatch.rs b/hyper/src/client/dispatch.rs
index 949906a..cd1742c 100644
--- a/hyper/src/client/dispatch.rs
+++ b/hyper/src/client/dispatch.rs
@@ -1,9 +1,8 @@
 #[cfg(feature = "http2")]
 use std::future::Future;
-use futures_util::FutureExt;
+
 use tokio::sync::{mpsc, oneshot};
-#[cfg(feature = "http2")]
-use crate::common::Pin;
+
 use crate::common::{task, Poll};
 pub(crate) type RetryPromise<T, U> = oneshot::Receiver<
     Result<U, (crate::Error, Option<T>)>,
diff --git a/hyper/src/client/pool.rs b/hyper/src/client/pool.rs
index 62d7078..964c859 100644
--- a/hyper/src/client/pool.rs
+++ b/hyper/src/client/pool.rs
@@ -8,7 +8,7 @@ use std::time::{Duration, Instant};
 use futures_channel::oneshot;
 #[cfg(feature = "runtime")]
 use tokio::time::{Duration, Instant, Interval};
-use tracing::{debug, trace};
+
 use super::client::Ver;
 use crate::common::{exec::Exec, task, Future, Pin, Poll, Unpin};
 #[allow(missing_debug_implementations)]
diff --git a/hyper/src/client/service.rs b/hyper/src/client/service.rs
index 6d39897..330d97b 100644
--- a/hyper/src/client/service.rs
+++ b/hyper/src/client/service.rs
@@ -4,7 +4,7 @@
 use std::error::Error as StdError;
 use std::future::Future;
 use std::marker::PhantomData;
-use tracing::debug;
+
 use super::conn::{Builder, SendRequest};
 use crate::{
     body::HttpBody, common::{task, Pin, Poll},
diff --git a/hyper/src/common/buf.rs b/hyper/src/common/buf.rs
index 744e88b..b418829 100644
--- a/hyper/src/common/buf.rs
+++ b/hyper/src/common/buf.rs
@@ -1,6 +1,6 @@
 use std::collections::VecDeque;
 use std::io::IoSlice;
-use bytes::{Buf, BufMut, Bytes, BytesMut};
+use bytes::{Buf, Bytes};
 pub(crate) struct BufList<T> {
     bufs: VecDeque<T>,
 }
diff --git a/hyper/src/common/date.rs b/hyper/src/common/date.rs
index 90f0520..a6a2337 100644
--- a/hyper/src/common/date.rs
+++ b/hyper/src/common/date.rs
@@ -1,10 +1,10 @@
 use std::cell::RefCell;
-use std::fmt::{self, Write};
+use std::fmt::{self};
 use std::str;
-use std::time::{Duration, SystemTime};
+use std::time::{SystemTime};
 #[cfg(feature = "http2")]
 use http::header::HeaderValue;
-use httpdate::HttpDate;
+
 pub(crate) const DATE_VALUE_LENGTH: usize = 29;
 #[cfg(feature = "http1")]
 pub(crate) fn extend(dst: &mut Vec<u8>) {
diff --git a/hyper/src/common/drain.rs b/hyper/src/common/drain.rs
index 4b21fc6..2e8b311 100644
--- a/hyper/src/common/drain.rs
+++ b/hyper/src/common/drain.rs
@@ -1,4 +1,4 @@
-use std::mem;
+
 use pin_project_lite::pin_project;
 use tokio::sync::watch;
 use super::{task, Future, Pin, Poll};
diff --git a/hyper/src/common/io/rewind.rs b/hyper/src/common/io/rewind.rs
index aaf676f..e02d45c 100644
--- a/hyper/src/common/io/rewind.rs
+++ b/hyper/src/common/io/rewind.rs
@@ -1,6 +1,6 @@
 use std::marker::Unpin;
-use std::{cmp, io};
-use bytes::{Buf, Bytes};
+use std::{io};
+use bytes::{Bytes};
 use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
 use crate::common::{task, Pin, Poll};
 /// Combine a buffer with an IO, rewinding reads to use the buffer.
diff --git a/hyper/src/common/watch.rs b/hyper/src/common/watch.rs
index 62109b9..8c7b2ad 100644
--- a/hyper/src/common/watch.rs
+++ b/hyper/src/common/watch.rs
@@ -5,7 +5,7 @@
 //! - The value `0` is reserved for closed.
 use futures_util::task::AtomicWaker;
 use std::sync::{
-    atomic::{AtomicUsize, Ordering},
+    atomic::{AtomicUsize},
     Arc,
 };
 use std::task;
diff --git a/hyper/src/ext.rs b/hyper/src/ext.rs
index b8246a2..c0ca6fe 100644
--- a/hyper/src/ext.rs
+++ b/hyper/src/ext.rs
@@ -11,8 +11,7 @@ use std::collections::HashMap;
 use std::fmt;
 #[cfg(any(feature = "http1", feature = "ffi"))]
 mod h1_reason_phrase;
-#[cfg(any(feature = "http1", feature = "ffi"))]
-pub(crate) use h1_reason_phrase::ReasonPhrase;
+
 #[cfg(feature = "http2")]
 /// Represents the `:protocol` pseudo-header used by
 /// the [Extended CONNECT Protocol].
diff --git a/hyper/src/ext/h1_reason_phrase.rs b/hyper/src/ext/h1_reason_phrase.rs
index ac80fde..59d469c 100644
--- a/hyper/src/ext/h1_reason_phrase.rs
+++ b/hyper/src/ext/h1_reason_phrase.rs
@@ -32,23 +32,7 @@ use bytes::Bytes;
 /// its contents will be written in place of the canonical reason phrase when responding via HTTP/1.
 #[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub(crate) struct ReasonPhrase(Bytes);
-impl ReasonPhrase {
-    /// Gets the reason phrase as bytes.
-    pub(crate) fn as_bytes(&self) -> &[u8] {
-        loop {}
-    }
-    /// Converts a static byte slice to a reason phrase.
-    pub(crate) fn from_static(reason: &'static [u8]) -> Self {
-        loop {}
-    }
-    /// Converts a `Bytes` directly into a `ReasonPhrase` without validating.
-    ///
-    /// Use with care; invalid bytes in a reason phrase can cause serious security problems if
-    /// emitted in a response.
-    pub(crate) unsafe fn from_bytes_unchecked(reason: Bytes) -> Self {
-        loop {}
-    }
-}
+impl ReasonPhrase {}
 impl TryFrom<&[u8]> for ReasonPhrase {
     type Error = InvalidReasonPhrase;
     fn try_from(reason: &[u8]) -> Result<Self, Self::Error> {
@@ -98,12 +82,6 @@ impl std::fmt::Display for InvalidReasonPhrase {
     }
 }
 impl std::error::Error for InvalidReasonPhrase {}
-const fn is_valid_byte(b: u8) -> bool {
-    loop {}
-}
-const fn find_invalid_byte(bytes: &[u8]) -> Option<u8> {
-    loop {}
-}
 #[cfg(test)]
 mod tests {
     use super::*;
diff --git a/hyper/src/headers.rs b/hyper/src/headers.rs
index 9b12b2a..45a6df4 100644
--- a/hyper/src/headers.rs
+++ b/hyper/src/headers.rs
@@ -1,6 +1,5 @@
-#[cfg(feature = "http1")]
-use bytes::BytesMut;
-use http::header::CONTENT_LENGTH;
+
+
 use http::header::{HeaderValue, ValueIter};
 use http::HeaderMap;
 #[cfg(all(feature = "http2", feature = "client"))]
diff --git a/hyper/src/proto/h1/conn.rs b/hyper/src/proto/h1/conn.rs
index 1cf73ca..278e741 100644
--- a/hyper/src/proto/h1/conn.rs
+++ b/hyper/src/proto/h1/conn.rs
@@ -4,18 +4,18 @@ use std::marker::PhantomData;
 #[cfg(all(feature = "server", feature = "runtime"))]
 use std::time::Duration;
 use bytes::{Buf, Bytes};
-use http::header::{HeaderValue, CONNECTION};
+
 use http::{HeaderMap, Method, Version};
 use httparse::ParserConfig;
 use tokio::io::{AsyncRead, AsyncWrite};
 #[cfg(all(feature = "server", feature = "runtime"))]
 use tokio::time::Sleep;
-use tracing::{debug, error, trace};
+
 use super::io::Buffered;
-use super::{Decoder, Encode, EncodedBuf, Encoder, Http1Transaction, ParseContext, Wants};
+use super::{Decoder, EncodedBuf, Encoder, Http1Transaction, Wants};
 use crate::body::DecodedLength;
-use crate::common::{task, Pin, Poll, Unpin};
-use crate::headers::connection_keep_alive;
+use crate::common::{task, Poll, Unpin};
+
 use crate::proto::{BodyLength, MessageHead};
 const H2_PREFACE: &[u8] = b"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n";
 /// This handles a connection, which will have been established over an
diff --git a/hyper/src/proto/h1/dispatch.rs b/hyper/src/proto/h1/dispatch.rs
index 160eb40..5ef9d1f 100644
--- a/hyper/src/proto/h1/dispatch.rs
+++ b/hyper/src/proto/h1/dispatch.rs
@@ -2,12 +2,12 @@ use std::error::Error as StdError;
 use bytes::{Buf, Bytes};
 use http::Request;
 use tokio::io::{AsyncRead, AsyncWrite};
-use tracing::{debug, trace};
-use super::{Http1Transaction, Wants};
-use crate::body::{Body, DecodedLength, HttpBody};
+use tracing::{trace};
+use super::{Http1Transaction};
+use crate::body::{Body, HttpBody};
 use crate::common::{task, Future, Pin, Poll, Unpin};
-use crate::proto::{BodyLength, Conn, Dispatched, MessageHead, RequestHead};
-use crate::upgrade::OnUpgrade;
+use crate::proto::{Conn, Dispatched, MessageHead, RequestHead};
+
 pub(crate) struct Dispatcher<D, Bs: HttpBody, I, T> {
     conn: Conn<I, Bs::Data, T>,
     dispatch: D,
diff --git a/hyper/src/proto/h1/encode.rs b/hyper/src/proto/h1/encode.rs
index 60f9b79..bc00455 100644
--- a/hyper/src/proto/h1/encode.rs
+++ b/hyper/src/proto/h1/encode.rs
@@ -2,7 +2,7 @@ use std::fmt;
 use std::io::IoSlice;
 use bytes::buf::{Chain, Take};
 use bytes::Buf;
-use tracing::trace;
+
 use super::io::WriteBuf;
 type StaticBuf = &'static [u8];
 /// Encoders to handle different Transfer-Encodings.
diff --git a/hyper/src/proto/h1/io.rs b/hyper/src/proto/h1/io.rs
index fdb0d26..fe18508 100644
--- a/hyper/src/proto/h1/io.rs
+++ b/hyper/src/proto/h1/io.rs
@@ -1,20 +1,20 @@
-use std::cmp;
+
 use std::fmt;
 #[cfg(all(feature = "server", feature = "runtime"))]
 use std::future::Future;
 use std::io::{self, IoSlice};
 use std::marker::Unpin;
-use std::mem::MaybeUninit;
+
 #[cfg(all(feature = "server", feature = "runtime"))]
 use std::time::Duration;
-use bytes::{Buf, BufMut, Bytes, BytesMut};
-use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
+use bytes::{Buf, Bytes, BytesMut};
+use tokio::io::{AsyncRead, AsyncWrite};
 #[cfg(all(feature = "server", feature = "runtime"))]
 use tokio::time::Instant;
-use tracing::{debug, trace};
+
 use super::{Http1Transaction, ParseContext, ParsedMessage};
 use crate::common::buf::BufList;
-use crate::common::{task, Pin, Poll};
+use crate::common::{task, Poll};
 /// The initial buffer size allocated before trying to read from IO.
 pub(crate) const INIT_BUFFER_SIZE: usize = 8192;
 /// The minimum value that can be set to max buffer size.
diff --git a/hyper/src/proto/h1/mod.rs b/hyper/src/proto/h1/mod.rs
index 0f945c0..086defc 100644
--- a/hyper/src/proto/h1/mod.rs
+++ b/hyper/src/proto/h1/mod.rs
@@ -11,7 +11,7 @@ pub(crate) use self::conn::Conn;
 pub(crate) use self::decode::Decoder;
 pub(crate) use self::dispatch::Dispatcher;
 pub(crate) use self::encode::{EncodedBuf, Encoder};
-pub(crate) use self::io::MINIMUM_MAX_BUFFER_SIZE;
+
 mod conn;
 mod decode;
 pub(crate) mod dispatch;
diff --git a/hyper/src/proto/h1/role.rs b/hyper/src/proto/h1/role.rs
index cb4f097..556d7bc 100644
--- a/hyper/src/proto/h1/role.rs
+++ b/hyper/src/proto/h1/role.rs
@@ -1,24 +1,22 @@
-use std::fmt::{self, Write};
+use std::fmt::{self};
 use std::mem::MaybeUninit;
-use bytes::Bytes;
+
 use bytes::BytesMut;
-#[cfg(feature = "server")]
-use http::header::ValueIter;
-use http::header::{self, Entry, HeaderName, HeaderValue};
-use http::{HeaderMap, Method, StatusCode, Version};
+
+use http::header::{HeaderName};
+use http::{HeaderMap, Method, StatusCode};
 #[cfg(all(feature = "server", feature = "runtime"))]
 use tokio::time::Instant;
-use tracing::{debug, error, trace, trace_span, warn};
+
 use crate::body::DecodedLength;
-#[cfg(feature = "server")]
-use crate::common::date;
+
 use crate::error::Parse;
 use crate::ext::HeaderCaseMap;
 #[cfg(feature = "ffi")]
 use crate::ext::OriginalHeaderOrder;
-use crate::headers;
+
 use crate::proto::h1::{
-    Encode, Encoder, Http1Transaction, ParseContext, ParseResult, ParsedMessage,
+    Encode, Encoder, Http1Transaction, ParseContext, ParseResult,
 };
 use crate::proto::{BodyLength, MessageHead, RequestHead, RequestLine};
 const MAX_HEADERS: usize = 100;
diff --git a/hyper/src/proto/h2/client.rs b/hyper/src/proto/h2/client.rs
index adb713a..9962c46 100644
--- a/hyper/src/proto/h2/client.rs
+++ b/hyper/src/proto/h2/client.rs
@@ -1,24 +1,24 @@
 use std::error::Error as StdError;
 #[cfg(feature = "runtime")]
 use std::time::Duration;
-use bytes::Bytes;
+
 use futures_channel::{mpsc, oneshot};
-use futures_util::future::{self, Either, FutureExt as _, TryFutureExt as _};
-use futures_util::stream::StreamExt as _;
+
+
 use h2::client::{Builder, SendRequest};
 use h2::SendStream;
-use http::{Method, StatusCode};
+
 use tokio::io::{AsyncRead, AsyncWrite};
-use tracing::{debug, trace, warn};
-use super::{ping, H2Upgraded, PipeToSendStream, SendBuf};
+
+use super::{ping, SendBuf};
 use crate::body::HttpBody;
 use crate::client::dispatch::Callback;
 use crate::common::{exec::Exec, task, Future, Never, Pin, Poll};
-use crate::ext::Protocol;
-use crate::headers;
-use crate::proto::h2::UpgradedSendStream;
+
+
+
 use crate::proto::Dispatched;
-use crate::upgrade::Upgraded;
+
 use crate::{Body, Request, Response};
 use h2::client::ResponseFuture;
 type ClientRx<B> = crate::client::dispatch::Receiver<Request<B>, Response<Body>>;
diff --git a/hyper/src/proto/h2/mod.rs b/hyper/src/proto/h2/mod.rs
index 3e4093e..681aec9 100644
--- a/hyper/src/proto/h2/mod.rs
+++ b/hyper/src/proto/h2/mod.rs
@@ -1,14 +1,14 @@
 use bytes::{Buf, Bytes};
-use h2::{Reason, RecvStream, SendStream};
-use http::header::{HeaderName, CONNECTION, TE, TRAILER, TRANSFER_ENCODING, UPGRADE};
+use h2::{RecvStream, SendStream};
+
 use http::HeaderMap;
 use pin_project_lite::pin_project;
 use std::error::Error as StdError;
 use std::io::{self, Cursor, IoSlice};
-use std::mem;
+
 use std::task::Context;
 use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
-use tracing::{debug, trace, warn};
+
 use crate::body::HttpBody;
 use crate::common::{task, Future, Pin, Poll};
 use crate::proto::h2::ping::Recorder;
diff --git a/hyper/src/proto/h2/ping.rs b/hyper/src/proto/h2/ping.rs
index 1fa9586..38b2d16 100644
--- a/hyper/src/proto/h2/ping.rs
+++ b/hyper/src/proto/h2/ping.rs
@@ -29,10 +29,10 @@ use std::task::{self, Poll};
 use std::time::Duration;
 #[cfg(not(feature = "runtime"))]
 use std::time::Instant;
-use h2::{Ping, PingPong};
+use h2::{PingPong};
 #[cfg(feature = "runtime")]
 use tokio::time::{Instant, Sleep};
-use tracing::{debug, trace};
+
 type WindowSize = u32;
 pub(super) fn disabled() -> Recorder {
     loop {}
diff --git a/hyper/src/proto/h2/server.rs b/hyper/src/proto/h2/server.rs
index a65028f..4088a03 100644
--- a/hyper/src/proto/h2/server.rs
+++ b/hyper/src/proto/h2/server.rs
@@ -2,24 +2,24 @@ use std::error::Error as StdError;
 use std::marker::Unpin;
 #[cfg(feature = "runtime")]
 use std::time::Duration;
-use bytes::Bytes;
+
 use h2::server::{Connection, Handshake, SendResponse};
-use h2::{Reason, RecvStream};
-use http::{Method, Request};
+use h2::{RecvStream};
+
 use pin_project_lite::pin_project;
 use tokio::io::{AsyncRead, AsyncWrite};
-use tracing::{debug, trace, warn};
+
 use super::{ping, PipeToSendStream, SendBuf};
 use crate::body::HttpBody;
 use crate::common::exec::ConnStreamExec;
-use crate::common::{date, task, Future, Pin, Poll};
-use crate::ext::Protocol;
-use crate::headers;
+use crate::common::{task, Future, Pin, Poll};
+
+
 use crate::proto::h2::ping::Recorder;
-use crate::proto::h2::{H2Upgraded, UpgradedSendStream};
+
 use crate::proto::Dispatched;
 use crate::service::HttpService;
-use crate::upgrade::{OnUpgrade, Pending, Upgraded};
+use crate::upgrade::{Pending};
 use crate::{Body, Response};
 const DEFAULT_CONN_WINDOW: u32 = 1024 * 1024;
 const DEFAULT_STREAM_WINDOW: u32 = 1024 * 1024;
diff --git a/hyper/src/server/conn.rs b/hyper/src/server/conn.rs
index e11f1e2..d85fb1e 100644
--- a/hyper/src/server/conn.rs
+++ b/hyper/src/server/conn.rs
@@ -53,10 +53,8 @@ use std::marker::PhantomData;
 use std::time::Duration;
 #[cfg(feature = "http2")]
 use crate::common::io::Rewind;
-#[cfg(all(feature = "http1", feature = "http2"))]
-use crate::error::{Kind, Parse};
-#[cfg(feature = "http1")]
-use crate::upgrade::Upgraded;
+
+
 cfg_feature! {
     #![any(feature = "http1", feature = "http2")] use std::error::Error as StdError; use
     std::fmt; use bytes::Bytes; use pin_project_lite::pin_project; use tokio::io:: {
diff --git a/hyper/src/server/server.rs b/hyper/src/server/server.rs
index 698fa03..2ba2a1c 100644
--- a/hyper/src/server/server.rs
+++ b/hyper/src/server/server.rs
@@ -6,7 +6,7 @@ use std::net::{SocketAddr, TcpListener as StdTcpListener};
 use std::time::Duration;
 use pin_project_lite::pin_project;
 use tokio::io::{AsyncRead, AsyncWrite};
-use tracing::trace;
+
 use super::accept::Accept;
 #[cfg(all(feature = "tcp"))]
 use super::tcp::AddrIncoming;
@@ -467,7 +467,7 @@ where
 pub(crate) mod new_svc {
     use std::error::Error as StdError;
     use tokio::io::{AsyncRead, AsyncWrite};
-    use tracing::debug;
+    
     use super::{Connecting, Watcher};
     use crate::body::{Body, HttpBody};
     use crate::common::exec::ConnStreamExec;
diff --git a/hyper/src/server/shutdown.rs b/hyper/src/server/shutdown.rs
index d3a9e70..c716ef3 100644
--- a/hyper/src/server/shutdown.rs
+++ b/hyper/src/server/shutdown.rs
@@ -1,12 +1,12 @@
 use std::error::Error as StdError;
 use pin_project_lite::pin_project;
 use tokio::io::{AsyncRead, AsyncWrite};
-use tracing::debug;
+
 use super::accept::Accept;
 use super::conn::UpgradeableConnection;
 use super::server::{Server, Watcher};
 use crate::body::{Body, HttpBody};
-use crate::common::drain::{self, Draining, Signal, Watch, Watching};
+use crate::common::drain::{Draining, Signal, Watch, Watching};
 use crate::common::exec::{ConnStreamExec, NewSvcExec};
 use crate::common::{task, Future, Pin, Poll, Unpin};
 use crate::service::{HttpService, MakeServiceRef};
diff --git a/hyper/src/server/tcp.rs b/hyper/src/server/tcp.rs
index 3a40b83..0e9e9af 100644
--- a/hyper/src/server/tcp.rs
+++ b/hyper/src/server/tcp.rs
@@ -5,8 +5,8 @@ use std::time::Duration;
 use socket2::TcpKeepalive;
 use tokio::net::TcpListener;
 use tokio::time::Sleep;
-use tracing::{debug, error, trace};
-use crate::common::{task, Future, Pin, Poll};
+
+use crate::common::{task, Pin, Poll};
 #[allow(unreachable_pub)]
 pub use self::addr_stream::AddrStream;
 use super::accept::Accept;
diff --git a/hyper/src/service/mod.rs b/hyper/src/service/mod.rs
index 22f850c..93ec3be 100644
--- a/hyper/src/service/mod.rs
+++ b/hyper/src/service/mod.rs
@@ -49,7 +49,7 @@ pub(super) use self::make::MakeConnection;
 #[cfg(all(any(feature = "http1", feature = "http2"), feature = "server"))]
 pub(super) use self::make::MakeServiceRef;
 #[cfg(all(any(feature = "http1", feature = "http2"), feature = "client"))]
-pub(super) use self::oneshot::{oneshot, Oneshot};
+pub(super) use self::oneshot::{Oneshot};
 
 pub use self::make::make_service_fn;
 pub use self::util::service_fn;
diff --git a/hyper/src/upgrade.rs b/hyper/src/upgrade.rs
index 5f4aed0..000e8c3 100644
--- a/hyper/src/upgrade.rs
+++ b/hyper/src/upgrade.rs
@@ -46,8 +46,7 @@ use std::marker::Unpin;
 use bytes::Bytes;
 use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
 use tokio::sync::oneshot;
-#[cfg(any(feature = "http1", feature = "http2"))]
-use tracing::trace;
+
 use crate::common::io::Rewind;
 use crate::common::{task, Future, Pin, Poll};
 /// An upgraded HTTP connection.