{"abstract":"Multipart boundary parameter parsing: duplicate boundary declarations remain ambiguous even when identical.","category":"HTTP ranges","checks":18,"contract":"Parse a bounded Content-Type string with semicolon-separated parameters, quoted strings and backslash escapes inside quotes. Require multipart/byteranges (case-insensitive) and exactly one boundary parameter, with 1..12 ASCII printable characters excluding CR/LF. Other parameters ignored. Unbalanced quotes or dangling quoted escapes reject. Input x is the field string.","evaluation_group":"s3-http_ranges-multipart-boundary-parameter","failed_approach":"The partial repair uses parts=[]\ncurrent=''\nquoted=False\nescaped=False\nfor c in x:\n    if escaped:\n        current+=c\n        escaped=False\n    elif quoted and c=='\\\\':\n        escaped=True\n    elif c=='\"':\n        quoted=not quoted\n    elif c==';' and not quoted:\n        parts.append(current)\n        current=''\n    else:\n        current+=c\nif quoted or escaped: return None\nparts.append(current)\nif parts[0].strip().lower()!='multipart/byteranges': return None\nboundaries=[]\nfor part in parts[1:]:\n    if '=' not in part: continue\n    key,value=part.split('=',1)\n    if key.strip().lower()=='boundary': boundaries.append(value.strip())\nif not boundaries or len(set(boundaries))!=1: return None\nvalue=boundaries[0]\nif not 1<=len(value)<=12: return None\nif any(ord(c)<32 or ord(c)>126 for c in value): return None\nreturn value, which still violates the stated contract.","family":"s3-http_ranges-multipart-boundary-parameter-duplicate-boundary","id":"FA-26866","implementations":{"attempt":{"sha256":"fb1b9d87715abd19160d7c6e09d26518eb238a10f541c61f184f99ea284f35ac","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    parts=[]\n    current=''\n    quoted=False\n    escaped=False\n    for c in x:\n        if escaped:\n            current+=c\n            escaped=False\n        elif quoted and c=='\\\\':\n            escaped=True\n        elif c=='\"':\n            quoted=not quoted\n        elif c==';' and not quoted:\n            parts.append(current)\n            current=''\n        else:\n            current+=c\n    if quoted or escaped: return None\n    parts.append(current)\n    if parts[0].strip().lower()!='multipart/byteranges': return None\n    boundaries=[]\n    for part in parts[1:]:\n        if '=' not in part: continue\n        key,value=part.split('=',1)\n        if key.strip().lower()=='boundary': boundaries.append(value.strip())\n    if not boundaries or len(set(boundaries))!=1: return None\n    value=boundaries[0]\n    if not 1<=len(value)<=12: return None\n    if any(ord(c)<32 or ord(c)>126 for c in value): return None\n    return value\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('duplicate-boundary fixture 0', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a;b\"'))), json.loads(json.dumps('a;b')))\ncheck('duplicate-boundary fixture 1', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a\\\\\"b\"'))), json.loads(json.dumps('a\"b')))\ncheck('duplicate-boundary fixture 2', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a\\\\\\\\b\"'))), json.loads(json.dumps('a\\\\b')))\ncheck('duplicate-boundary fixture 3', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"abc'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 4', json.loads(json.dumps(solve(' Multipart/ByteRanges ; BOUNDARY = abc '))), json.loads(json.dumps('abc')))\ncheck('duplicate-boundary fixture 5', json.loads(json.dumps(solve('multipart/byteranges; boundary=a; boundary=a'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 6', json.loads(json.dumps(solve('multipart/byteranges; boundary=a; boundary=b'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 7', json.loads(json.dumps(solve('multipart/mixed; boundary=a'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 8', json.loads(json.dumps(solve('multipart/byteranges; boundary='))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 9', json.loads(json.dumps(solve('multipart/byteranges; boundary=abcdefghijkl'))), json.loads(json.dumps('abcdefghijkl')))\ncheck('duplicate-boundary fixture 10', json.loads(json.dumps(solve('multipart/byteranges; boundary=abcdefghijklm'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 11', json.loads(json.dumps(solve('multipart/byteranges; boundary=a\\nb'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 12', json.loads(json.dumps(solve('multipart/byteranges; boundary=a\\x7fb'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 13', json.loads(json.dumps(solve('multipart/byteranges; x=y'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 14', json.loads(json.dumps(solve(\"p\"*N))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 15', json.loads(json.dumps(solve(\"multipart/byteranges; boundary=b\"+str(N)))), json.loads(json.dumps(\"b\"+str(N))))\ncheck('duplicate-boundary fixture 16', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"abc\"'))), json.loads(json.dumps('abc')))\ncheck('duplicate-boundary fixture 17', json.loads(json.dumps(solve('multipart/byteranges; x=a=b; boundary=ab'))), json.loads(json.dumps('ab')))\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":"91a39d33a1c79bef93d1338dadab4d40393a58f80430dc19ca732c476791fe58","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    parts=[]\n    current=''\n    quoted=False\n    escaped=False\n    for c in x:\n        if escaped:\n            current+=c\n            escaped=False\n        elif quoted and c=='\\\\':\n            escaped=True\n        elif c=='\"':\n            quoted=not quoted\n        elif c==';' and not quoted:\n            parts.append(current)\n            current=''\n        else:\n            current+=c\n    if quoted or escaped: return None\n    parts.append(current)\n    if parts[0].strip().lower()!='multipart/byteranges': return None\n    boundaries=[]\n    for part in parts[1:]:\n        if '=' not in part: continue\n        key,value=part.split('=',1)\n        if key.strip().lower()=='boundary': boundaries.append(value.strip())\n    if not boundaries: return None\n    value=boundaries[0]\n    if not 1<=len(value)<=12: return None\n    if any(ord(c)<32 or ord(c)>126 for c in value): return None\n    return value\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('duplicate-boundary fixture 0', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a;b\"'))), json.loads(json.dumps('a;b')))\ncheck('duplicate-boundary fixture 1', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a\\\\\"b\"'))), json.loads(json.dumps('a\"b')))\ncheck('duplicate-boundary fixture 2', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a\\\\\\\\b\"'))), json.loads(json.dumps('a\\\\b')))\ncheck('duplicate-boundary fixture 3', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"abc'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 4', json.loads(json.dumps(solve(' Multipart/ByteRanges ; BOUNDARY = abc '))), json.loads(json.dumps('abc')))\ncheck('duplicate-boundary fixture 5', json.loads(json.dumps(solve('multipart/byteranges; boundary=a; boundary=a'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 6', json.loads(json.dumps(solve('multipart/byteranges; boundary=a; boundary=b'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 7', json.loads(json.dumps(solve('multipart/mixed; boundary=a'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 8', json.loads(json.dumps(solve('multipart/byteranges; boundary='))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 9', json.loads(json.dumps(solve('multipart/byteranges; boundary=abcdefghijkl'))), json.loads(json.dumps('abcdefghijkl')))\ncheck('duplicate-boundary fixture 10', json.loads(json.dumps(solve('multipart/byteranges; boundary=abcdefghijklm'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 11', json.loads(json.dumps(solve('multipart/byteranges; boundary=a\\nb'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 12', json.loads(json.dumps(solve('multipart/byteranges; boundary=a\\x7fb'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 13', json.loads(json.dumps(solve('multipart/byteranges; x=y'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 14', json.loads(json.dumps(solve(\"p\"*N))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 15', json.loads(json.dumps(solve(\"multipart/byteranges; boundary=b\"+str(N)))), json.loads(json.dumps(\"b\"+str(N))))\ncheck('duplicate-boundary fixture 16', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"abc\"'))), json.loads(json.dumps('abc')))\ncheck('duplicate-boundary fixture 17', json.loads(json.dumps(solve('multipart/byteranges; x=a=b; boundary=ab'))), json.loads(json.dumps('ab')))\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"},"fixed":{"sha256":"0135404cfd7913cc031f643dea5208a964e093c83500612eda9bf37d02a934af","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    parts=[]\n    current=''\n    quoted=False\n    escaped=False\n    for c in x:\n        if escaped:\n            current+=c\n            escaped=False\n        elif quoted and c=='\\\\':\n            escaped=True\n        elif c=='\"':\n            quoted=not quoted\n        elif c==';' and not quoted:\n            parts.append(current)\n            current=''\n        else:\n            current+=c\n    if quoted or escaped: return None\n    parts.append(current)\n    if parts[0].strip().lower()!='multipart/byteranges': return None\n    boundaries=[]\n    for part in parts[1:]:\n        if '=' not in part: continue\n        key,value=part.split('=',1)\n        if key.strip().lower()=='boundary': boundaries.append(value.strip())\n    if len(boundaries)!=1: return None\n    value=boundaries[0]\n    if not 1<=len(value)<=12: return None\n    if any(ord(c)<32 or ord(c)>126 for c in value): return None\n    return value\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('duplicate-boundary fixture 0', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a;b\"'))), json.loads(json.dumps('a;b')))\ncheck('duplicate-boundary fixture 1', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a\\\\\"b\"'))), json.loads(json.dumps('a\"b')))\ncheck('duplicate-boundary fixture 2', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"a\\\\\\\\b\"'))), json.loads(json.dumps('a\\\\b')))\ncheck('duplicate-boundary fixture 3', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"abc'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 4', json.loads(json.dumps(solve(' Multipart/ByteRanges ; BOUNDARY = abc '))), json.loads(json.dumps('abc')))\ncheck('duplicate-boundary fixture 5', json.loads(json.dumps(solve('multipart/byteranges; boundary=a; boundary=a'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 6', json.loads(json.dumps(solve('multipart/byteranges; boundary=a; boundary=b'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 7', json.loads(json.dumps(solve('multipart/mixed; boundary=a'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 8', json.loads(json.dumps(solve('multipart/byteranges; boundary='))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 9', json.loads(json.dumps(solve('multipart/byteranges; boundary=abcdefghijkl'))), json.loads(json.dumps('abcdefghijkl')))\ncheck('duplicate-boundary fixture 10', json.loads(json.dumps(solve('multipart/byteranges; boundary=abcdefghijklm'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 11', json.loads(json.dumps(solve('multipart/byteranges; boundary=a\\nb'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 12', json.loads(json.dumps(solve('multipart/byteranges; boundary=a\\x7fb'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 13', json.loads(json.dumps(solve('multipart/byteranges; x=y'))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 14', json.loads(json.dumps(solve(\"p\"*N))), json.loads(json.dumps(None)))\ncheck('duplicate-boundary fixture 15', json.loads(json.dumps(solve(\"multipart/byteranges; boundary=b\"+str(N)))), json.loads(json.dumps(\"b\"+str(N))))\ncheck('duplicate-boundary fixture 16', json.loads(json.dumps(solve('multipart/byteranges; boundary=\"abc\"'))), json.loads(json.dumps('abc')))\ncheck('duplicate-boundary fixture 17', json.loads(json.dumps(solve('multipart/byteranges; x=a=b; boundary=ab'))), json.loads(json.dumps('ab')))\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":"Deterministic simplified range service, with stipulated local policies and already parsed trusted inputs; not a complete HTTP implementation. 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":"s3-http_ranges-multipart-boundary-parameter-duplicate-boundary","generated_at":"2026-09-29T14:41:19.835928+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Range responses combine representation identity, conditional requests, framing, and partial-object state.","repair":"Apply the bounded decision exactly: parts=[]\ncurrent=''\nquoted=False\nescaped=False\nfor c in x:\n    if escaped:\n        current+=c\n        escaped=False\n    elif quoted and c=='\\\\':\n        escaped=True\n    elif c=='\"':\n        quoted=not quoted\n    elif c==';' and not quoted:\n        parts.append(current)\n        current=''\n    else:\n        current+=c\nif quoted or escaped: return None\nparts.append(current)\nif parts[0].strip().lower()!='multipart/byteranges': return None\nboundaries=[]\nfor part in parts[1:]:\n    if '=' not in part: continue\n    key,value=part.split('=',1)\n    if key.strip().lower()=='boundary': boundaries.append(value.strip())\nif len(boundaries)!=1: return None\nvalue=boundaries[0]\nif not 1<=len(value)<=12: return None\nif any(ord(c)<32 or ord(c)>126 for c in value): return None\nreturn value","root_cause":"The multipart-boundary-parameter-duplicate-boundary decision uses parts=[]\ncurrent=''\nquoted=False\nescaped=False\nfor c in x:\n    if escaped:\n        current+=c\n        escaped=False\n    elif quoted and c=='\\\\':\n        escaped=True\n    elif c=='\"':\n        quoted=not quoted\n    elif c==';' and not quoted:\n        parts.append(current)\n        current=''\n    else:\n        current+=c\nif quoted or escaped: return None\nparts.append(current)\nif parts[0].strip().lower()!='multipart/byteranges': return None\nboundaries=[]\nfor part in parts[1:]:\n    if '=' not in part: continue\n    key,value=part.split('=',1)\n    if key.strip().lower()=='boundary': boundaries.append(value.strip())\nif not boundaries: return None\nvalue=boundaries[0]\nif not 1<=len(value)<=12: return None\nif any(ord(c)<32 or ord(c)>126 for c in value): return None\nreturn value.","sha256":"b9f6af9e7eddc61d0efc23c124c2d8a1a01ee1810b2efc319ef709fc5f61d806","title":"Multipart boundary parameter parsing: duplicate boundary declarations remain ambiguous even when identical · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":38.77,"exit_code":1,"observations":[{"actual":"a;b","check":"duplicate-boundary fixture 0","expected":"a;b","passed":true},{"actual":"a\"b","check":"duplicate-boundary fixture 1","expected":"a\"b","passed":true},{"actual":"a\\b","check":"duplicate-boundary fixture 2","expected":"a\\b","passed":true},{"actual":null,"check":"duplicate-boundary fixture 3","expected":null,"passed":true},{"actual":"abc","check":"duplicate-boundary fixture 4","expected":"abc","passed":true},{"actual":"a","check":"duplicate-boundary fixture 5","expected":null,"passed":false},{"actual":null,"check":"duplicate-boundary fixture 6","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 7","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 8","expected":null,"passed":true},{"actual":"abcdefghijkl","check":"duplicate-boundary fixture 9","expected":"abcdefghijkl","passed":true},{"actual":null,"check":"duplicate-boundary fixture 10","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 11","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 12","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 13","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 14","expected":null,"passed":true},{"actual":"b1","check":"duplicate-boundary fixture 15","expected":"b1","passed":true},{"actual":"abc","check":"duplicate-boundary fixture 16","expected":"abc","passed":true},{"actual":"ab","check":"duplicate-boundary fixture 17","expected":"ab","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"duplicate-boundary fixture 0\", \"actual\": \"a;b\", \"expected\": \"a;b\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 1\", \"actual\": \"a\\\"b\", \"expected\": \"a\\\"b\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 2\", \"actual\": \"a\\\\b\", \"expected\": \"a\\\\b\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 3\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 4\", \"actual\": \"abc\", \"expected\": \"abc\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 5\", \"actual\": \"a\", \"expected\": null, \"passed\": false}, {\"check\": \"duplicate-boundary fixture 6\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 7\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 8\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 9\", \"actual\": \"abcdefghijkl\", \"expected\": \"abcdefghijkl\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 10\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 11\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 12\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 13\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 14\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 15\", \"actual\": \"b1\", \"expected\": \"b1\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 16\", \"actual\": \"abc\", \"expected\": \"abc\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 17\", \"actual\": \"ab\", \"expected\": \"ab\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":38.85,"exit_code":1,"observations":[{"actual":"a;b","check":"duplicate-boundary fixture 0","expected":"a;b","passed":true},{"actual":"a\"b","check":"duplicate-boundary fixture 1","expected":"a\"b","passed":true},{"actual":"a\\b","check":"duplicate-boundary fixture 2","expected":"a\\b","passed":true},{"actual":null,"check":"duplicate-boundary fixture 3","expected":null,"passed":true},{"actual":"abc","check":"duplicate-boundary fixture 4","expected":"abc","passed":true},{"actual":"a","check":"duplicate-boundary fixture 5","expected":null,"passed":false},{"actual":"a","check":"duplicate-boundary fixture 6","expected":null,"passed":false},{"actual":null,"check":"duplicate-boundary fixture 7","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 8","expected":null,"passed":true},{"actual":"abcdefghijkl","check":"duplicate-boundary fixture 9","expected":"abcdefghijkl","passed":true},{"actual":null,"check":"duplicate-boundary fixture 10","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 11","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 12","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 13","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 14","expected":null,"passed":true},{"actual":"b1","check":"duplicate-boundary fixture 15","expected":"b1","passed":true},{"actual":"abc","check":"duplicate-boundary fixture 16","expected":"abc","passed":true},{"actual":"ab","check":"duplicate-boundary fixture 17","expected":"ab","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"duplicate-boundary fixture 0\", \"actual\": \"a;b\", \"expected\": \"a;b\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 1\", \"actual\": \"a\\\"b\", \"expected\": \"a\\\"b\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 2\", \"actual\": \"a\\\\b\", \"expected\": \"a\\\\b\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 3\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 4\", \"actual\": \"abc\", \"expected\": \"abc\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 5\", \"actual\": \"a\", \"expected\": null, \"passed\": false}, {\"check\": \"duplicate-boundary fixture 6\", \"actual\": \"a\", \"expected\": null, \"passed\": false}, {\"check\": \"duplicate-boundary fixture 7\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 8\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 9\", \"actual\": \"abcdefghijkl\", \"expected\": \"abcdefghijkl\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 10\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 11\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 12\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 13\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 14\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"duplicate-boundary fixture 15\", \"actual\": \"b1\", \"expected\": \"b1\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 16\", \"actual\": \"abc\", \"expected\": \"abc\", \"passed\": true}, {\"check\": \"duplicate-boundary fixture 17\", \"actual\": \"ab\", \"expected\": \"ab\", \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":41.839,"exit_code":0,"observations":[{"actual":"a;b","check":"duplicate-boundary fixture 0","expected":"a;b","passed":true},{"actual":"a\"b","check":"duplicate-boundary fixture 1","expected":"a\"b","passed":true},{"actual":"a\\b","check":"duplicate-boundary fixture 2","expected":"a\\b","passed":true},{"actual":null,"check":"duplicate-boundary fixture 3","expected":null,"passed":true},{"actual":"abc","check":"duplicate-boundary fixture 4","expected":"abc","passed":true},{"actual":null,"check":"duplicate-boundary fixture 5","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 6","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 7","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 8","expected":null,"passed":true},{"actual":"abcdefghijkl","check":"duplicate-boundary fixture 9","expected":"abcdefghijkl","passed":true},{"actual":null,"check":"duplicate-boundary fixture 10","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 11","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 12","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 13","expected":null,"passed":true},{"actual":null,"check":"duplicate-boundary fixture 14","expected":null,"passed":true},{"actual":"b1","check":"duplicate-boundary fixture 15","expected":"b1","passed":true},{"actual":"abc","check":"duplicate-boundary fixture 16","expected":"abc","passed":true},{"actual":"ab","check":"duplicate-boundary fixture 17","expected":"ab","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": 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