Fix cargo hack warnings (#3114)

.github/workflows/CI.yml

@@ -43,6 +43,9 @@ jobs:
 
   cargo-hack:
     runs-on: ubuntu-24.04
+    env:
+      # Fail the build if there are any warnings
+      RUSTFLAGS: "-D warnings"
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable

axum/src/extract/mod.rs

@@ -11,6 +11,8 @@ pub mod rejection;
 pub mod ws;
 
 pub(crate) mod nested_path;
+#[cfg(feature = "original-uri")]
+mod original_uri;
 mod raw_form;
 mod raw_query;
 mod request_parts;
@@ -72,7 +74,7 @@ pub use self::query::Query;
 
 #[cfg(feature = "original-uri")]
 #[doc(inline)]
-pub use self::request_parts::OriginalUri;
+pub use self::original_uri::OriginalUri;
 
 #[cfg(feature = "ws")]
 #[doc(inline)]

axum/src/extract/original_uri.rs

@@ -0,0 +1,85 @@
+use super::{Extension, FromRequestParts};
+use http::{request::Parts, Uri};
+use std::convert::Infallible;
+
+/// Extractor that gets the original request URI regardless of nesting.
+///
+/// This is necessary since [`Uri`](http::Uri), when used as an extractor, will
+/// have the prefix stripped if used in a nested service.
+///
+/// # Example
+///
+/// ```
+/// use axum::{
+///     routing::get,
+///     Router,
+///     extract::OriginalUri,
+///     http::Uri
+/// };
+///
+/// let api_routes = Router::new()
+///     .route(
+///         "/users",
+///         get(|uri: Uri, OriginalUri(original_uri): OriginalUri| async {
+///             // `uri` is `/users`
+///             // `original_uri` is `/api/users`
+///         }),
+///     );
+///
+/// let app = Router::new().nest("/api", api_routes);
+/// # let _: Router = app;
+/// ```
+///
+/// # Extracting via request extensions
+///
+/// `OriginalUri` can also be accessed from middleware via request extensions.
+/// This is useful for example with [`Trace`](tower_http::trace::Trace) to
+/// create a span that contains the full path, if your service might be nested:
+///
+/// ```
+/// use axum::{
+///     Router,
+///     extract::OriginalUri,
+///     http::Request,
+///     routing::get,
+/// };
+/// use tower_http::trace::TraceLayer;
+///
+/// let api_routes = Router::new()
+///     .route("/users/{id}", get(|| async { /* ... */ }))
+///     .layer(
+///         TraceLayer::new_for_http().make_span_with(|req: &Request<_>| {
+///             let path = if let Some(path) = req.extensions().get::<OriginalUri>() {
+///                 // This will include `/api`
+///                 path.0.path().to_owned()
+///             } else {
+///                 // The `OriginalUri` extension will always be present if using
+///                 // `Router` unless another extractor or middleware has removed it
+///                 req.uri().path().to_owned()
+///             };
+///             tracing::info_span!("http-request", %path)
+///         }),
+///     );
+///
+/// let app = Router::new().nest("/api", api_routes);
+/// # let _: Router = app;
+/// ```
+#[derive(Debug, Clone)]
+pub struct OriginalUri(pub Uri);
+
+impl<S> FromRequestParts<S> for OriginalUri
+where
+    S: Send + Sync,
+{
+    type Rejection = Infallible;
+
+    async fn from_request_parts(parts: &mut Parts, state: &S) -> Result<Self, Self::Rejection> {
+        let uri = Extension::<Self>::from_request_parts(parts, state)
+            .await
+            .unwrap_or_else(|_| Extension(OriginalUri(parts.uri.clone())))
+            .0;
+        Ok(uri)
+    }
+}
+
+axum_core::__impl_deref!(OriginalUri: Uri);

axum/src/extract/request_parts.rs

@@ -1,92 +1,6 @@
-use super::{Extension, FromRequestParts};
-use http::{request::Parts, Uri};
-use std::convert::Infallible;
-
-/// Extractor that gets the original request URI regardless of nesting.
-///
-/// This is necessary since [`Uri`](http::Uri), when used as an extractor, will
-/// have the prefix stripped if used in a nested service.
-///
-/// # Example
-///
-/// ```
-/// use axum::{
-///     routing::get,
-///     Router,
-///     extract::OriginalUri,
-///     http::Uri
-/// };
-///
-/// let api_routes = Router::new()
-///     .route(
-///         "/users",
-///         get(|uri: Uri, OriginalUri(original_uri): OriginalUri| async {
-///             // `uri` is `/users`
-///             // `original_uri` is `/api/users`
-///         }),
-///     );
-///
-/// let app = Router::new().nest("/api", api_routes);
-/// # let _: Router = app;
-/// ```
-///
-/// # Extracting via request extensions
-///
-/// `OriginalUri` can also be accessed from middleware via request extensions.
-/// This is useful for example with [`Trace`](tower_http::trace::Trace) to
-/// create a span that contains the full path, if your service might be nested:
-///
-/// ```
-/// use axum::{
-///     Router,
-///     extract::OriginalUri,
-///     http::Request,
-///     routing::get,
-/// };
-/// use tower_http::trace::TraceLayer;
-///
-/// let api_routes = Router::new()
-///     .route("/users/{id}", get(|| async { /* ... */ }))
-///     .layer(
-///         TraceLayer::new_for_http().make_span_with(|req: &Request<_>| {
-///             let path = if let Some(path) = req.extensions().get::<OriginalUri>() {
-///                 // This will include `/api`
-///                 path.0.path().to_owned()
-///             } else {
-///                 // The `OriginalUri` extension will always be present if using
-///                 // `Router` unless another extractor or middleware has removed it
-///                 req.uri().path().to_owned()
-///             };
-///             tracing::info_span!("http-request", %path)
-///         }),
-///     );
-///
-/// let app = Router::new().nest("/api", api_routes);
-/// # let _: Router = app;
-/// ```
-#[cfg(feature = "original-uri")]
-#[derive(Debug, Clone)]
-pub struct OriginalUri(pub Uri);
-
-#[cfg(feature = "original-uri")]
-impl<S> FromRequestParts<S> for OriginalUri
-where
-    S: Send + Sync,
-{
-    type Rejection = Infallible;
-
-    async fn from_request_parts(parts: &mut Parts, state: &S) -> Result<Self, Self::Rejection> {
-        let uri = Extension::<Self>::from_request_parts(parts, state)
-            .await
-            .unwrap_or_else(|_| Extension(OriginalUri(parts.uri.clone())))
-            .0;
-        Ok(uri)
-    }
-}
-
-#[cfg(feature = "original-uri")]
-axum_core::__impl_deref!(OriginalUri: Uri);
-
+/// This module contains the tests for the `impl<S> FromRequestParts<S> for Parts`
+/// implementation in the `axum-core` crate. The tests cannot be moved there
+/// because we don't have access to the `TestClient` and `Router` types there.
 #[cfg(test)]
 mod tests {
     use crate::{extract::Extension, routing::get, test_helpers::*, Router};

axum/src/macros.rs

@@ -68,6 +68,7 @@ macro_rules! all_the_tuples {
 }
 
 #[cfg(feature = "tracing")]
+#[allow(unused_macros)]
 macro_rules! trace {
     ($($tt:tt)*) => {
         tracing::trace!($($tt)*)
@@ -75,6 +76,7 @@ macro_rules! trace {
 }
 
 #[cfg(feature = "tracing")]
+#[allow(unused_macros)]
 macro_rules! error {
     ($($tt:tt)*) => {
         tracing::error!($($tt)*)
@@ -82,11 +84,13 @@ macro_rules! error {
 }
 
 #[cfg(not(feature = "tracing"))]
+#[allow(unused_macros)]
 macro_rules! trace {
     ($($tt:tt)*) => {};
 }
 
 #[cfg(not(feature = "tracing"))]
+#[allow(unused_macros)]
 macro_rules! error {
     ($($tt:tt)*) => {};
 }

axum/src/routing/mod.rs

@@ -99,6 +99,7 @@ impl<S> fmt::Debug for Router<S> {
 }
 
 pub(crate) const NEST_TAIL_PARAM: &str = "__private__axum_nest_tail_param";
+#[cfg(feature = "matched-path")]
 pub(crate) const NEST_TAIL_PARAM_CAPTURE: &str = "/{*__private__axum_nest_tail_param}";
 pub(crate) const FALLBACK_PARAM: &str = "__private__axum_fallback";
 pub(crate) const FALLBACK_PARAM_PATH: &str = "/{*__private__axum_fallback}";

axum/src/routing/path_router.rs

@@ -369,7 +369,7 @@ where
 
     pub(super) fn call_with_state(
         &self,
-        mut req: Request,
+        #[cfg_attr(not(feature = "original-uri"), allow(unused_mut))] mut req: Request,
         state: S,
     ) -> Result<RouteFuture<Infallible>, (Request, S)> {
         #[cfg(feature = "original-uri")]