Enable println warning (#1929)

.github/workflows/CI.yml

@@ -29,7 +29,7 @@ jobs:
       uses: actions-rs/cargo@v1
       with:
         command: clippy
-        args: --workspace --all-targets --all-features
+        args: --workspace --all-targets --all-features -- -D warnings
     - name: rustfmt
       uses: actions-rs/cargo@v1
       with:

axum-core/src/lib.rs

@@ -48,6 +48,7 @@
 #![allow(elided_lifetimes_in_paths, clippy::type_complexity)]
 #![forbid(unsafe_code)]
 #![cfg_attr(test, allow(clippy::float_cmp))]
+#![cfg_attr(not(test), warn(clippy::print_stdout, clippy::dbg_macro))]
 
 #[macro_use]
 pub(crate) mod macros;

axum-extra/src/lib.rs

@@ -64,6 +64,7 @@
 #![forbid(unsafe_code)]
 #![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
 #![cfg_attr(test, allow(clippy::float_cmp))]
+#![cfg_attr(not(test), warn(clippy::print_stdout, clippy::dbg_macro))]
 
 #[allow(unused_extern_crates)]
 extern crate self as axum_extra;

axum-macros/src/lib.rs

@@ -42,6 +42,7 @@
 #![forbid(unsafe_code)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![cfg_attr(test, allow(clippy::float_cmp))]
+#![cfg_attr(not(test), warn(clippy::print_stdout, clippy::dbg_macro))]
 
 use proc_macro::TokenStream;
 use quote::{quote, ToTokens};

axum/src/lib.rs

@@ -399,7 +399,6 @@
 
 #![warn(
     clippy::all,
-    clippy::dbg_macro,
     clippy::todo,
     clippy::empty_enum,
     clippy::enum_glob_use,
@@ -437,6 +436,7 @@
 #![forbid(unsafe_code)]
 #![cfg_attr(docsrs, feature(doc_auto_cfg, doc_cfg))]
 #![cfg_attr(test, allow(clippy::float_cmp))]
+#![cfg_attr(not(test), warn(clippy::print_stdout, clippy::dbg_macro))]
 
 #[macro_use]
 pub(crate) mod macros;

examples/websockets/src/client.rs

@@ -30,7 +30,6 @@ async fn main() {
     let start_time = Instant::now();
     //spawn several clients that will concurrently talk to the server
     let mut clients = (0..N_CLIENTS)
-        .into_iter()
         .map(|cli| tokio::spawn(spawn_client(cli)))
         .collect::<FuturesUnordered<_>>();