use alloc imports

actix-utils/src/counter.rs

@@ -1,9 +1,7 @@
 //! Task-notifying counter.
 
-use core::cell::Cell;
-use core::task;
-
-use std::rc::Rc;
+use alloc::rc::Rc;
+use core::{cell::Cell, task};
 
 use local_waker::LocalWaker;
 

actix-utils/src/future/poll_fn.rs

@@ -3,9 +3,9 @@
 use core::{
     fmt,
     future::Future,
+    pin::Pin,
     task::{Context, Poll},
 };
-use std::pin::Pin;
 
 /// Create a future driven by the provided function that receives a task context.
 pub fn poll_fn<F, T>(f: F) -> PollFn<F>

actix-utils/src/lib.rs

@@ -5,6 +5,8 @@
 #![doc(html_logo_url = "https://actix.rs/img/logo.png")]
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
 
+extern crate alloc;
+
 pub mod counter;
 pub mod future;
 pub mod timeout;