diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index a39ddb9ca..b8faa4622 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -8,11 +8,11 @@ edition = "2018"
 # [dependencies] instead.
 [dev-dependencies]
 tower = { version = "0.4", path = "../tower", features = ["full"] }
-tower-service = "0.3" 
+tower-service = "0.3"
 tokio = { version = "1.0", features = ["full"] }
 rand = "0.8"
 pin-project = "1.0"
-futures = "0.3"
+futures = "0.3.22"
 tracing = "0.1"
 tracing-subscriber = "0.2"
 hdrhistogram = "7"
diff --git a/tower-service/Cargo.toml b/tower-service/Cargo.toml
index 68a5a8768..6fc60f758 100644
--- a/tower-service/Cargo.toml
+++ b/tower-service/Cargo.toml
@@ -25,4 +25,4 @@ edition = "2018"
 http = "0.2"
 tower-layer = { version = "0.3", path = "../tower-layer" }
 tokio = { version = "1", features = ["macros", "time"] }
-futures = "0.3"
+futures = "0.3.22"
diff --git a/tower/Cargo.toml b/tower/Cargo.toml
index 3e199a844..4cd140e7c 100644
--- a/tower/Cargo.toml
+++ b/tower/Cargo.toml
@@ -81,7 +81,7 @@ pin-project-lite = { version = "0.2.7", optional = true }
 sync_wrapper = { version = "0.1.1", optional = true }
 
 [dev-dependencies]
-futures = "0.3"
+futures = "0.3.22"
 hdrhistogram = { version = "7.0", default-features = false }
 pin-project-lite = "0.2.7"
 tokio = { version = "1.6.2", features = ["macros", "sync", "test-util", "rt-multi-thread"] }
diff --git a/tower/src/lib.rs b/tower/src/lib.rs
index a509b89cb..003ebcee6 100644
--- a/tower/src/lib.rs
+++ b/tower/src/lib.rs
@@ -22,7 +22,7 @@
 //! response or an error. This abstraction can be used to model both clients and
 //! servers.
 //!
-//! Generic components, like [timeouts], [rate limiting], and [load balancing],
+//! Generic components, like [`timeout`], [rate limiting], and [load balancing],
 //! can be modeled as [`Service`]s that wrap some inner service and apply
 //! additional behavior before or after the inner service is called. This allows
 //! implementing these components in a protocol-agnostic, composable way. Typically,
@@ -130,7 +130,7 @@
 //! ```
 //!
 //! Alternatively, you can only enable some features. For example, to enable
-//! only the [`retry`] and [`timeout`][timeouts] middleware, write:
+//! only the [`retry`] and [`timeout`] middleware, write:
 //!
 //! ```toml
 //! tower = { version = "0.4", features = ["retry", "timeout"] }
@@ -148,7 +148,6 @@
 //!
 //! [`Service`]: crate::Service
 //! [`Layer`]: crate::Layer
-//! [timeouts]: crate::timeout
 //! [rate limiting]: crate::limit::rate
 //! [load balancing]: crate::balance
 //! [`ServiceBuilder`]: crate::ServiceBuilder
diff --git a/tower/src/load/pending_requests.rs b/tower/src/load/pending_requests.rs
index 2b30de8dd..2721633fd 100644
--- a/tower/src/load/pending_requests.rs
+++ b/tower/src/load/pending_requests.rs
@@ -45,6 +45,7 @@ pub struct Count(usize);
 
 /// Tracks an in-flight request by reference count.
 #[derive(Debug)]
+#[allow(dead_code)]
 pub struct Handle(RefCount);
 
 // ===== impl PendingRequests =====
diff --git a/tower/src/util/call_all/ordered.rs b/tower/src/util/call_all/ordered.rs
index ba8310016..9a283916b 100644
--- a/tower/src/util/call_all/ordered.rs
+++ b/tower/src/util/call_all/ordered.rs
@@ -168,7 +168,7 @@ impl<F: Future> common::Drive<F> for FuturesOrdered<F> {
     }
 
     fn push(&mut self, future: F) {
-        FuturesOrdered::push(self, future)
+        FuturesOrdered::push_back(self, future)
     }
 
     fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Option<F::Output>> {
diff --git a/tower/src/util/rng.rs b/tower/src/util/rng.rs
index de9975661..9b6d307d9 100644
--- a/tower/src/util/rng.rs
+++ b/tower/src/util/rng.rs
@@ -174,7 +174,7 @@ mod tests {
         let mut r = HasherRng::default();
         match super::sample_floyd2(&mut r, 2) {
             [0, 1] | [1, 0] => (),
-            err => panic!("{err:?}"),
+            array => panic!("unexpected inplace boundaries: {:?}", array),
         }
     }
 }