diff --git a/scripts/run_task.py b/scripts/run_task.py
index 63db29e..638715b 100644
--- a/scripts/run_task.py
+++ b/scripts/run_task.py
@@ -57,7 +57,6 @@ def main() -> int:
 
     artifact_manager = ArtifactManager(task)
     snapshot = artifact_manager.snapshot()
-    diff_summary = artifact_manager.diff_summary(snapshot)
 
     run_result = run_command(
         task.runner.command,
@@ -72,7 +71,7 @@ def main() -> int:
             status="crash",
             reason=f"command failed with exit code {run_result.exit_code}",
             candidate_score=None,
-            diff_summary=diff_summary,
+            diff_summary=artifact_manager.diff_summary(snapshot),
         )
 
     scorer_result = run_command(
@@ -88,7 +87,7 @@ def main() -> int:
             status="crash",
             reason=f"scorer failed with exit code {scorer_result.exit_code}",
             candidate_score=None,
-            diff_summary=diff_summary,
+            diff_summary=artifact_manager.diff_summary(snapshot),
         )
 
     try:
@@ -105,7 +104,7 @@ def main() -> int:
             status="crash",
             reason=f"score parse failed: {exc}",
             candidate_score=None,
-            diff_summary=diff_summary,
+            diff_summary=artifact_manager.diff_summary(snapshot),
         )
 
     decision = decide_candidate(
@@ -124,7 +123,7 @@ def main() -> int:
         status=decision.status,
         reason=decision.reason,
         candidate_score=decision.candidate_score,
-        diff_summary=diff_summary,
+        diff_summary=artifact_manager.diff_summary(snapshot),
     )
 
 
diff --git a/tests/test_execution_pipeline.py b/tests/test_execution_pipeline.py
index 44592f9..9175384 100644
--- a/tests/test_execution_pipeline.py
+++ b/tests/test_execution_pipeline.py
@@ -212,6 +212,81 @@ class RunTaskCliTest(unittest.TestCase):
             self.assertEqual(record["reason"], "scorer failed with exit code 7")
             self.assertIsNone(record["candidate_score"])
 
+    def test_run_task_cli_records_score_parse_failure(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            temp_root = Path(tmp)
+            self._copy_repo_layout(temp_root)
+
+            task_dir = temp_root / "tasks" / "score-parse-failure"
+            fixture_dir = task_dir / "fixtures"
+            fixture_dir.mkdir(parents=True)
+            (fixture_dir / "SKILL.md").write_text("# Fixture\n", encoding="utf-8")
+            (task_dir / "task.yaml").write_text(
+                "\n".join(
+                    [
+                        "id: score-parse-failure",
+                        "description: Score parse failure fixture.",
+                        "artifacts:",
+                        "  include:",
+                        "    - fixtures/SKILL.md",
+                        "  exclude: []",
+                        "  max_files_per_iteration: 1",
+                        "mutation:",
+                        "  mode: direct_edit",
+                        "  allowed_file_types:",
+                        "    - .md",
+                        "  max_changed_lines: 20",
+                        "runner:",
+                        "  command: python -c \"print('runner ok')\"",
+                        "  cwd: tasks/score-parse-failure",
+                        "  timeout_seconds: 30",
+                        "scorer:",
+                        "  type: command",
+                        "  command: python -c \"print('not-json')\"",
+                        "  parse:",
+                        "    format: json",
+                        "    score_field: score",
+                        "    metrics_field: metrics",
+                        "objective:",
+                        "  primary_metric: score",
+                        "  direction: maximize",
+                        "constraints: []",
+                        "policy:",
+                        "  keep_if: better_primary",
+                        "  tie_breakers: []",
+                        "  on_failure: discard",
+                        "budget:",
+                        "  max_iterations: 1",
+                        "  max_failures: 1",
+                        "logging:",
+                        "  results_file: work/results.jsonl",
+                        "  candidate_dir: work/candidates",
+                        "",
+                    ]
+                ),
+                encoding="utf-8",
+            )
+
+            completed = subprocess.run(
+                ["uv", "run", "python", "scripts/run_task.py", "--task", "tasks/score-parse-failure/task.yaml"],
+                cwd=str(temp_root),
+                capture_output=True,
+                text=True,
+                encoding="utf-8",
+                check=False,
+            )
+
+            self.assertEqual(completed.returncode, 0, msg=completed.stderr)
+            results_path = temp_root / "work" / "results.jsonl"
+            self.assertTrue(results_path.exists())
+            lines = results_path.read_text(encoding="utf-8").splitlines()
+            self.assertEqual(len(lines), 1)
+            record = json.loads(lines[0])
+            self.assertEqual(record["task_id"], "score-parse-failure")
+            self.assertEqual(record["status"], "crash")
+            self.assertIn("score parse failed:", record["reason"])
+            self.assertIsNone(record["candidate_score"])
+
 
 if __name__ == "__main__":
     unittest.main()