{"abstract":"Multiple aliases repeat the same conflict.","category":"Configuration","checks":7,"contract":"Copy canonical values; map alias values only when canonical is absent, remove alias keys, preserve unrelated options, and report conflicts where alias and canonical differ.","contract_signature":"config, aliases","evaluation_group":"xt-option-alias","failed_approach":"The attempted repair substitutes conflicts. Fixture 7 still yields ({'new': 3}, ['new', 'new']) instead of ({'new': 3}, ['new']).","family":"xt-option-alias-conflict-dedup","id":"FA-9751","implementations":{"attempt":{"sha256":"c710b1b4eb5c2f2ee5511280516be38739c7140d8225961288966c3282770ae6","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(config, aliases):\n    result = dict(config)\n    conflicts = []\n    for alias, canonical in aliases.items():\n        if alias not in config: continue\n        if canonical in config and config[canonical] != config[alias]: conflicts.append(canonical)\n        if canonical not in config: result[canonical] = config[alias]\n        result.pop(alias, None)\n    return (result, conflicts)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('fixture 1', solve({}, {}), ({}, []))\ncheck('fixture 2', solve({'old': 1}, {'old': 'new'}), ({'new': 1}, []))\ncheck('fixture 3', solve({'old': 1, 'new': 2}, {'old': 'new'}), ({'new': 2}, ['new']))\ncheck('fixture 4', solve({'old': 1, 'new': 1}, {'old': 'new'}), ({'new': 1}, []))\ncheck('fixture 5', solve({'x': 3}, {'old': 'new'}), ({'x': 3}, []))\ncheck('fixture 6', solve({'old': False}, {'old': 'new'}), ({'new': False}, []))\ncheck('fixture 7', solve({'a': 1, 'b': 2, 'new': 3}, {'a': 'new', 'b': 'new'}), ({'new': 3}, ['new']))\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"4311d9b7b74e0a043eea54cdb4218bc60efa8da3345339852353959400a04ca4","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(config, aliases):\n    result = dict(config)\n    conflicts = []\n    for alias, canonical in aliases.items():\n        if alias not in config: continue\n        if canonical in config and config[canonical] != config[alias]: conflicts.append(canonical)\n        if canonical not in config: result[canonical] = config[alias]\n        result.pop(alias, None)\n    return (result, sorted(conflicts))\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('fixture 1', solve({}, {}), ({}, []))\ncheck('fixture 2', solve({'old': 1}, {'old': 'new'}), ({'new': 1}, []))\ncheck('fixture 3', solve({'old': 1, 'new': 2}, {'old': 'new'}), ({'new': 2}, ['new']))\ncheck('fixture 4', solve({'old': 1, 'new': 1}, {'old': 'new'}), ({'new': 1}, []))\ncheck('fixture 5', solve({'x': 3}, {'old': 'new'}), ({'x': 3}, []))\ncheck('fixture 6', solve({'old': False}, {'old': 'new'}), ({'new': False}, []))\ncheck('fixture 7', solve({'a': 1, 'b': 2, 'new': 3}, {'a': 'new', 'b': 'new'}), ({'new': 3}, ['new']))\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":" This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"xt-option-alias-conflict-dedup","generated_at":"2026-09-29T14:38:32.781237+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"An offline model of deprecated option alias migration, suitable for testing build and release tooling without external services.","root_cause":"The implementation substitutes sorted(conflicts) for sorted(set(conflicts)), so multiple aliases repeat the same conflict.","sha256":"f3cde1b41ec6d37e852c09127877e062e159d538bc3430e63ad0282d3f3df8d7","title":"Deprecated option alias migration: Multiple aliases repeat the same conflict · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":43.176,"exit_code":1,"observations":[{"actual":[{},[]],"check":"fixture 1","expected":[{},[]],"passed":true},{"actual":[{"new":1},[]],"check":"fixture 2","expected":[{"new":1},[]],"passed":true},{"actual":[{"new":2},["new"]],"check":"fixture 3","expected":[{"new":2},["new"]],"passed":true},{"actual":[{"new":1},[]],"check":"fixture 4","expected":[{"new":1},[]],"passed":true},{"actual":[{"x":3},[]],"check":"fixture 5","expected":[{"x":3},[]],"passed":true},{"actual":[{"new":false},[]],"check":"fixture 6","expected":[{"new":false},[]],"passed":true},{"actual":[{"new":3},["new","new"]],"check":"fixture 7","expected":[{"new":3},["new"]],"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 1\", \"actual\": [{}, []], \"expected\": [{}, []], \"passed\": true}, {\"check\": \"fixture 2\", \"actual\": [{\"new\": 1}, []], \"expected\": [{\"new\": 1}, []], \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": [{\"new\": 2}, [\"new\"]], \"expected\": [{\"new\": 2}, [\"new\"]], \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": [{\"new\": 1}, []], \"expected\": [{\"new\": 1}, []], \"passed\": true}, {\"check\": \"fixture 5\", \"actual\": [{\"x\": 3}, []], \"expected\": [{\"x\": 3}, []], \"passed\": true}, {\"check\": \"fixture 6\", \"actual\": [{\"new\": false}, []], \"expected\": [{\"new\": false}, []], \"passed\": true}, {\"check\": \"fixture 7\", \"actual\": [{\"new\": 3}, [\"new\", \"new\"]], \"expected\": [{\"new\": 3}, [\"new\"]], \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":42.017,"exit_code":1,"observations":[{"actual":[{},[]],"check":"fixture 1","expected":[{},[]],"passed":true},{"actual":[{"new":1},[]],"check":"fixture 2","expected":[{"new":1},[]],"passed":true},{"actual":[{"new":2},["new"]],"check":"fixture 3","expected":[{"new":2},["new"]],"passed":true},{"actual":[{"new":1},[]],"check":"fixture 4","expected":[{"new":1},[]],"passed":true},{"actual":[{"x":3},[]],"check":"fixture 5","expected":[{"x":3},[]],"passed":true},{"actual":[{"new":false},[]],"check":"fixture 6","expected":[{"new":false},[]],"passed":true},{"actual":[{"new":3},["new","new"]],"check":"fixture 7","expected":[{"new":3},["new"]],"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 1\", \"actual\": [{}, []], \"expected\": [{}, []], \"passed\": true}, {\"check\": \"fixture 2\", \"actual\": [{\"new\": 1}, []], \"expected\": [{\"new\": 1}, []], \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": [{\"new\": 2}, [\"new\"]], \"expected\": [{\"new\": 2}, [\"new\"]], \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": [{\"new\": 1}, []], \"expected\": [{\"new\": 1}, []], \"passed\": true}, {\"check\": \"fixture 5\", \"actual\": [{\"x\": 3}, []], \"expected\": [{\"x\": 3}, []], \"passed\": true}, {\"check\": \"fixture 6\", \"actual\": [{\"new\": false}, []], \"expected\": [{\"new\": false}, []], \"passed\": true}, {\"check\": \"fixture 7\", \"actual\": [{\"new\": 3}, [\"new\", \"new\"]], \"expected\": [{\"new\": 3}, [\"new\"]], \"passed\": false}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}