[autofix.ci] apply automated fixes

Author: autofix-ci[bot]

Cargo.lock

@@ -101,10 +101,15 @@ impl<'a> Formatter<'a> {
             let after_text = formatted.print().unwrap().into_code();
             let after_stats = detect_code_removal::collect(&after_text, source_type);
 
-            #[expect(clippy::print_stderr)]
             if let Some(diff) = detect_code_removal::diff(&before_stats, &after_stats) {
-                eprintln!("🚨 Code removal detected during formatting:\n{diff}");
-                // eprintln!("Original source:\n{before_text}");
+                unreachable!(
+                    r"🚨 Code removal detected during formatting!
+Difference found ==========================
+{diff}
+Original code =============================
+{before_text}
+==========================================="
+                );
             }
         }