From 28576decc1c9f8015e14b744e963f0de560af996 Mon Sep 17 00:00:00 2001
From: oech3 <79379754+oech3@users.noreply.github.com>
Date: Sun, 7 Dec 2025 17:25:12 +0900
Subject: [PATCH] coreutils: Print utility not found to stderr

---
 src/common/validation.rs | 2 +-
 tests/test_util_name.rs  | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/common/validation.rs b/src/common/validation.rs
index 1715ad4bf..61b832f35 100644
--- a/src/common/validation.rs
+++ b/src/common/validation.rs
@@ -25,7 +25,7 @@ pub fn get_all_utilities<T: Args>(
 
 /// Prints a "utility not found" error and exits
 pub fn not_found(util: &OsStr) -> ! {
-    println!("{}: function/utility not found", util.maybe_quote());
+    eprintln!("{}: function/utility not found", util.maybe_quote());
     process::exit(1);
 }
 
diff --git a/tests/test_util_name.rs b/tests/test_util_name.rs
index caf900db8..12309a6e3 100644
--- a/tests/test_util_name.rs
+++ b/tests/test_util_name.rs
@@ -195,9 +195,9 @@ fn util_invalid_name_invalid_command() {
         .unwrap();
     let output = child.wait_with_output().unwrap();
     assert_eq!(output.status.code(), Some(1));
-    assert_eq!(output.stderr, b"");
+    assert_eq!(output.stdout, b"");
     assert_eq!(
-        output.stdout,
+        output.stderr,
         b"definitely_invalid: function/utility not found\n"
     );
 }