fix clippy lints

tower/src/make/make_service.rs

@@ -118,7 +118,7 @@ pub trait MakeService<Target, Request>: Sealed<(Target, Request)> {
     /// # };
     /// # }
     /// ```
-    fn as_service(&mut self) -> AsService<Self, Request>
+    fn as_service(&mut self) -> AsService<'_, Self, Request>
     where
         Self: Sized,
     {

tower/src/util/ready.rs

@@ -69,7 +69,7 @@ where
 pub struct Ready<'a, T, Request>(ReadyOneshot<&'a mut T, Request>);
 
 // Safety: This is safe for the same reason that the impl for ReadyOneshot is safe.
-impl<'a, T, Request> Unpin for Ready<'a, T, Request> {}
+impl<T, Request> Unpin for Ready<'_, T, Request> {}
 
 impl<'a, T, Request> Ready<'a, T, Request>
 where
@@ -92,7 +92,7 @@ where
     }
 }
 
-impl<'a, T, Request> fmt::Debug for Ready<'a, T, Request>
+impl<T, Request> fmt::Debug for Ready<'_, T, Request>
 where
     T: fmt::Debug,
 {

tower/tests/limit/concurrency.rs

@@ -1,5 +1,4 @@
-#[path = "../support.rs"]
-mod support;
+use crate::support;
 use tokio_test::{assert_pending, assert_ready, assert_ready_ok};
 use tower::limit::concurrency::ConcurrencyLimitLayer;
 use tower_test::{assert_request_eq, mock};