Move loom as a dev-dependency

asynchronix/Cargo.toml

@@ -67,20 +67,21 @@ tonic = { version = "0.11", default-features = false, features=["codegen", "pros
 # WASM service dependencies.
 wasm-bindgen = { version = "0.2", optional = true }
 
-[target.'cfg(asynchronix_loom)'.dependencies]
-loom = "0.5"
-waker-fn = "1.1"
-
-
 [dev-dependencies]
 atomic-wait = "1.1"
 futures-util = "0.3"
 futures-executor = "0.3"
 mio = { version = "1.0", features = ["os-poll", "net"] }
 
+[target.'cfg(asynchronix_loom)'.dev-dependencies]
+loom = "0.5"
+waker-fn = "1.1"
+
 [build-dependencies]
 tonic-build = { version = "0.11", optional = true }
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(asynchronix_loom)'] }
 
 [[test]]
 name = "integration"

asynchronix/build.rs

@@ -1,7 +1,4 @@
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    // Prevent warnings when checking for flag `asynchronix_loom`.
-    println!("cargo::rustc-check-cfg=cfg(asynchronix_loom)");
-
     #[cfg(feature = "rpc-codegen")]
     let builder = tonic_build::configure()
         .build_client(false)

asynchronix/src/loom_exports.rs

@@ -1,4 +1,4 @@
-#[cfg(asynchronix_loom)]
+#[cfg(all(test, asynchronix_loom))]
 #[allow(unused_imports)]
 pub(crate) mod sync {
     pub(crate) use loom::sync::{Arc, LockResult, Mutex, MutexGuard};
@@ -10,7 +10,7 @@ pub(crate) mod sync {
         };
     }
 }
-#[cfg(not(asynchronix_loom))]
+#[cfg(not(all(test, asynchronix_loom)))]
 #[allow(unused_imports)]
 pub(crate) mod sync {
     pub(crate) use std::sync::{Arc, LockResult, Mutex, MutexGuard, PoisonError};
@@ -22,11 +22,11 @@ pub(crate) mod sync {
     }
 }
 
-#[cfg(asynchronix_loom)]
+#[cfg(all(test, asynchronix_loom))]
 pub(crate) mod cell {
     pub(crate) use loom::cell::UnsafeCell;
 }
-#[cfg(not(asynchronix_loom))]
+#[cfg(not(all(test, asynchronix_loom)))]
 pub(crate) mod cell {
     #[derive(Debug)]
     pub(crate) struct UnsafeCell<T>(std::cell::UnsafeCell<T>);