Fix some simple compile-time warnings (#297)

tower-balance/Cargo.toml

@@ -37,7 +37,7 @@ tower-util = "0.1.0"
 [dev-dependencies]
 log = "0.4.1"
 env_logger = { version = "0.5.3", default-features = false }
-hdrsample = "6.0"
+hdrhistogram = "6.0"
 quickcheck = { version = "0.6", default-features = false }
 tokio = "0.1.7"
 tokio-executor = "0.1.2"

tower-balance/examples/demo.rs

@@ -2,7 +2,7 @@
 
 use env_logger;
 use futures::{future, stream, Async, Future, Poll, Stream};
-use hdrsample::Histogram;
+use hdrhistogram::Histogram;
 use rand::{self, Rng};
 use std::time::{Duration, Instant};
 use tokio::{runtime, timer};

tower-load-shed/tests/load-shed.rs

@@ -49,6 +49,6 @@ fn new_service() -> (LoadShed<Mock>, Handle) {
 }
 
 fn with_task<F: FnOnce() -> U, U>(f: F) -> U {
-    use futures::future::{lazy, Future};
+    use futures::future::lazy;
     lazy(|| Ok::<_, ()>(f())).wait().unwrap()
 }

tower-retry/tests/retry.rs

@@ -163,7 +163,6 @@ fn assert_not_ready<F: Future>(f: &mut F)
 where
     F::Error: ::std::fmt::Debug,
 {
-    use futures::future;
     future::poll_fn(|| {
         assert!(f.poll().unwrap().is_not_ready());
         Ok::<_, ()>(().into())

tower-test/tests/mock.rs

@@ -54,6 +54,6 @@ fn new_mock() -> (Mock, Handle) {
 
 // Helper to run some code within context of a task
 fn with_task<F: FnOnce() -> U, U>(f: F) -> U {
-    use futures::future::{lazy, Future};
+    use futures::future::lazy;
     lazy(|| Ok::<_, ()>(f())).wait().unwrap()
 }