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server/rust_coder_environment.py

@@ -280,6 +280,21 @@ class RustCoderEnvironment(Environment):
                     reward=0.0,
                 )
 
+        # #region agent log
+        # Debug why header checks fail: don't log secrets, only lengths/booleans.
+        self._dbg(
+            "H6",
+            "server/rust_coder_environment.py:step:pre_eval",
+            "pre-eval header/code relationship",
+            {
+                "header_chars": len(header or ""),
+                "code_chars": len(code or ""),
+                "header_substring_match": bool(header and header.strip() and (header.strip() in (code or ""))),
+                "header_first80": (header or "")[:80],
+            },
+        )
+        # #endregion
+
         # Do NOT mutate submissions by injecting header_section.
         # LeetCode-style behavior: the agent/LLM must return a complete Rust file
         # that already includes the required header_section.