chore: enable clippy::print_stdout and clippy::print_stderr (#23732)

1. Generally we should prefer to use the `log` crate.
2. I very often accidentally commit `eprintln`s.

When we should use `println` or `eprintln`, it's not too bad to be a bit
more verbose and ignore the lint rule.

2 files changed, 6 insertions, 3 deletions

diff --git a/cli/tools/repl/editor.rs b/cli/tools/repl/editor.rs
index 9cb3cd1c2..dbc9bce70 100644
--- a/cli/tools/repl/editor.rs
+++ b/cli/tools/repl/editor.rs
@@ -490,7 +490,7 @@ impl ReplEditor {
         }
 
         self.errored_on_history_save.store(true, Relaxed);
-        eprintln!("Unable to save history file: {e}");
+        log::warn!("Unable to save history file: {}", e);
       }
     }
   }
diff --git a/cli/tools/repl/mod.rs b/cli/tools/repl/mod.rs
index 8847bee52..c29e29e71 100644
--- a/cli/tools/repl/mod.rs
+++ b/cli/tools/repl/mod.rs
@@ -40,6 +40,7 @@ struct Repl {
   message_handler: RustylineSyncMessageHandler,
 }
 
+#[allow(clippy::print_stdout)]
 impl Repl {
   async fn run(&mut self) -> Result<(), AnyError> {
     loop {
@@ -61,7 +62,7 @@ impl Repl {
             break;
           }
 
-          println!("{output}");
+          println!("{}", output);
         }
         Err(ReadlineError::Interrupted) => {
           if self.editor.should_exit_on_interrupt() {
@@ -75,7 +76,7 @@ impl Repl {
           break;
         }
         Err(err) => {
-          println!("Error: {err:?}");
+          println!("Error: {:?}", err);
           break;
         }
       }
@@ -85,6 +86,7 @@ impl Repl {
   }
 }
 
+#[allow(clippy::print_stdout)]
 async fn read_line_and_poll(
   repl_session: &mut ReplSession,
   message_handler: &mut RustylineSyncMessageHandler,
@@ -152,6 +154,7 @@ async fn read_eval_file(
   Ok(file.into_text_decoded()?.source)
 }
 
+#[allow(clippy::print_stdout)]
 pub async fn run(flags: Flags, repl_flags: ReplFlags) -> Result<i32, AnyError> {
   let factory = CliFactory::from_flags(flags)?;
   let cli_options = factory.cli_options();