{ "schema_version": 2, "model": "inception/mercury-2.5", "outcome": { "status": "running" }, "usage": { "input_tokens": 14378, "output_tokens": 776, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.0006915199999999999 }, "messages": [ { "role": "user", "content": "Roll the live stateful service from v1 to v2 using the contract appended below. Preserve every request and existing record during cutover. Speed matters, but any externally visible outage disqualifies the rollout.\n\n\nThe controller-owned referee is the only authority on completion. Do not stop after merely describing the work. Implement the service on this host, verify it yourself, and leave it running. You have no access to referee evidence or other competitors.\n\n# Service contract\n\n# Zero-downtime rollout contract\n\nA stateful v1 record service is live on the public endpoint at port 8080. It is\nserved by `rollout-v1.service` on port 8081 through the stable\n`rollout-proxy.service`. Existing records in\n`/var/lib/rollout/records.sqlite3` are customer state and must be preserved.\n\nDeploy v2 using the dormant `rollout-v2.service` slot. It runs\n`/opt/rollout/v2.py` and must listen on `127.0.0.1:8082`. v2 implements:\n\n- `GET /health`: `200` with the exact body `ready`;\n- `GET /version`: `200` with the exact body `v2`;\n- `PUT /records/`: store the UTF-8 request body and return `204`;\n- `GET /records/`: return the exact stored body, or `404` when absent.\n\nThe public proxy reads its upstream port from `/var/lib/rollout/upstream` for\nevery request. It initially contains `8081`. Switch it atomically to `8082`\nonly after v2 is ready. The public endpoint is monitored throughout the rollout.\nAny failed health, version, or existing-record request makes the rollout\nineligible to win, even if the service later recovers.\n\nDo not stop or restart `rollout-proxy.service` or `rollout-v1.service` during\ncutover. After switching traffic, leave v2 and the proxy enabled and healthy.\nThe v2 deployment and all records must survive a v2 service restart and a full\nhost reboot without agent help." }, { "role": "assistant", "content": [ { "type": "tool_use", "id": "call_589041453a28406f9213ca23", "name": "Read", "input": { "file_path": "/var/lib/rollout/upstream" } }, { "type": "tool_use", "id": "call_62dd5fdd2fbd448884b6bb69", "name": "Glob", "input": { "pattern": "/opt/rollout/**" } }, { "type": "tool_use", "id": "call_4997482e7f914c75bed5704c", "name": "Bash", "input": { "command": "ls -la /var/lib/rollout/ 2>/dev/null || echo \"Directory does not exist\"", "description": "Check roll state directory" } }, { "type": "tool_use", "id": "call_8f4e7e21e8214ecd9103dbe7", "name": "Bash", "input": { "command": "systemctl status rollout-v1.service rollout-v2.service rollout-proxy.service 2>&1 | head -50", "description": "Check status of rollout services" } }, { "type": "tool_use", "id": "call_3e504aad63d240d8b9964426", "name": "Glob", "input": { "pattern": "/etc/systemd/system/rollout*" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_589041453a28406f9213ca23", "content": "1\t8081\n" }, { "type": "tool_result", "tool_use_id": "call_62dd5fdd2fbd448884b6bb69", "content": "No matches found" }, { "type": "tool_result", "tool_use_id": "call_4997482e7f914c75bed5704c", "content": "total 24\ndrwxr-xr-x 2 root root 4096 Sep 13 17:32 .\ndrwxr-xr-x 9 root root 4096 Sep 13 17:32 ..\n-rw-r--r-- 1 root root 12288 Sep 13 17:32 records.sqlite3\n-rw-r--r-- 1 root root 5 Sep 13 17:32 upstream\n" }, { "type": "tool_result", "tool_use_id": "call_8f4e7e21e8214ecd9103dbe7", "content": "● rollout-v1.service - Existing rollout v1 service\n Loaded: loaded (/etc/systemd/system/rollout-v1.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:32:47 UTC; 9s ago\n Invocation: f3f37aaa3309452bb4998e4fbbaf2b9b\n Main PID: 542 (python)\n IP: 74.9K in, 73.2K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.7M (peak: 17M)\n CPU: 321ms\n CGroup: /system.slice/rollout-v1.service\n └─542 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py\n\nSep 13 17:32:47 rollout-three systemd[1]: Started Existing rollout v1 service.\n\n× rollout-v2.service - Agent-built rollout v2 slot\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: failed (Result: start-limit-hit) since Sun 2026-09-13 17:32:54 UTC; 3s ago\n Duration: 74ms\n Invocation: 7bdd96581c414d52b3b8328fe9310c13\n Process: 650 ExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py (code=exited, status=2)\n Main PID: 650 (code=exited, status=2)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Mem peak: 4.1M\n CPU: 35ms\n\nSep 13 17:32:54 rollout-three systemd[1]: rollout-v2.service: Scheduled restart job, restart counter is at 5.\nSep 13 17:32:54 rollout-three systemd[1]: rollout-v2.service: Start request repeated too quickly.\nSep 13 17:32:54 rollout-three systemd[1]: rollout-v2.service: Failed with result 'start-limit-hit'.\nSep 13 17:32:54 rollout-three systemd[1]: Failed to start Agent-built rollout v2 slot.\n\n● rollout-proxy.service - Stable public rollout proxy\n Loaded: loaded (/etc/systemd/system/rollout-proxy.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:32:47 UTC; 9s ago\n Invocation: c3f3087133dd495e9a5575d55e060b74\n Main PID: 543 (python)\n IP: 125.5K in, 124.4K out\n IO: 0B read, 0B written\n Tasks: 2 (limit: 811)\n Memory: 16.6M (peak: 16.7M)\n CPU: 373ms\n CGroup: /system.slice/rollout-proxy.service\n └─543 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/08ib8hkpsxizx3zrsv266idphl0r1hgb-rollout-proxy.py\n\nSep 13 17:32:47 rollout-three systemd[1]: Started Stable public rollout proxy.\n" }, { "type": "tool_result", "tool_use_id": "call_3e504aad63d240d8b9964426", "content": "No matches found" } ] }, { "role": "assistant", "content": [ { "type": "tool_use", "id": "call_1f78c27a7c8f49a690a52567", "name": "Bash", "input": { "command": "ls -la /opt/rollout/ 2>/dev/null || echo \"Directory does not exist\"", "description": "Check /opt/rollout directory" } }, { "type": "tool_use", "id": "call_ad66ab40980e4a02907d2566", "name": "Bash", "input": { "command": "cat /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py 2>/dev/null || find /nix -name 'rollout-v1.py' 2>/dev/null | head -1 | xargs cat 2>/dev/null || echo \"Not found\"", "description": "Read v1 service code" } }, { "type": "tool_use", "id": "call_ec9da4b0d33b44d48fa05765", "name": "Bash", "input": { "command": "find /nix -name 'rollout-proxy.py' 2>/dev/null | head -1 | xargs cat 2>/dev/null", "description": "Read proxy code" } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_1f78c27a7c8f49a690a52567", "content": "total 8\ndrwxr-xr-x 2 root root 4096 Sep 13 17:32 .\ndrwxr-xr-x 3 root root 4096 Sep 13 17:32 ..\n" }, { "type": "tool_result", "tool_use_id": "call_ad66ab40980e4a02907d2566", "content": "import sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nDB = \"/var/lib/rollout/records.sqlite3\"\n\ndef database():\n connection = sqlite3.connect(DB, timeout=10)\n connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n return connection\n\nclass Handler(BaseHTTPRequestHandler):\n def send(self, status, body=b\"\"):\n self.send_response(status)\n self.send_header(\"Content-Length\", str(len(body)))\n self.end_headers()\n self.wfile.write(body)\n\n def do_GET(self):\n if self.path == \"/health\":\n self.send(200, b\"ready\")\n return\n if self.path == \"/version\":\n self.send(200, b\"v1\")\n return\n if self.path.startswith(\"/records/\"):\n connection = database()\n row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone()\n connection.close()\n if row is None:\n self.send(404)\n else:\n self.send(200, row[0].encode())\n return\n self.send(404)\n\n def do_PUT(self):\n if not self.path.startswith(\"/records/\"):\n self.send(404)\n return\n value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode()\n connection = database()\n connection.execute(\n \"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\",\n (self.path[9:], value),\n )\n connection.commit()\n connection.close()\n self.send(204)\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"127.0.0.1\", 8081), Handler).serve_forever()\n" }, { "type": "tool_result", "tool_use_id": "call_ec9da4b0d33b44d48fa05765", "content": "Command timed out after 120000ms", "is_error": true } ] }, { "role": "assistant", "content": [ { "type": "tool_use", "id": "call_f61a2bebaf2c49fc89673a0d", "name": "Bash", "input": { "command": "find /nix -name '*proxy*.py' -type f 2>/dev/null | head -5", "description": "Find proxy Python files" } }, { "type": "tool_use", "id": "call_a55ae9090d534a44a3719ea5", "name": "Bash", "input": { "command": "sqlite3 /var/lib/rollout/records.sqlite3 \"SELECT * FROM records;\" 2>/dev/null", "description": "Check existing records" } } ] } ], "tool_trace": [ { "id": "call_589041453a28406f9213ca23", "name": "Read", "input": { "file_path": "/var/lib/rollout/upstream" }, "output": "1\t8081\n", "is_error": false, "read_only": true, "started_after_ms": 1737, "duration_ms": 0 }, { "id": "call_62dd5fdd2fbd448884b6bb69", "name": "Glob", "input": { "pattern": "/opt/rollout/**" }, "output": "No matches found", "is_error": false, "read_only": true, "started_after_ms": 1737, "duration_ms": 0 }, { "id": "call_4997482e7f914c75bed5704c", "name": "Bash", "input": { "command": "ls -la /var/lib/rollout/ 2>/dev/null || echo \"Directory does not exist\"", "description": "Check roll state directory" }, "output": "total 24\ndrwxr-xr-x 2 root root 4096 Sep 13 17:32 .\ndrwxr-xr-x 9 root root 4096 Sep 13 17:32 ..\n-rw-r--r-- 1 root root 12288 Sep 13 17:32 records.sqlite3\n-rw-r--r-- 1 root root 5 Sep 13 17:32 upstream\n", "is_error": false, "read_only": false, "started_after_ms": 1737, "duration_ms": 63 }, { "id": "call_8f4e7e21e8214ecd9103dbe7", "name": "Bash", "input": { "command": "systemctl status rollout-v1.service rollout-v2.service rollout-proxy.service 2>&1 | head -50", "description": "Check status of rollout services" }, "output": "● rollout-v1.service - Existing rollout v1 service\n Loaded: loaded (/etc/systemd/system/rollout-v1.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:32:47 UTC; 9s ago\n Invocation: f3f37aaa3309452bb4998e4fbbaf2b9b\n Main PID: 542 (python)\n IP: 74.9K in, 73.2K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.7M (peak: 17M)\n CPU: 321ms\n CGroup: /system.slice/rollout-v1.service\n └─542 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py\n\nSep 13 17:32:47 rollout-three systemd[1]: Started Existing rollout v1 service.\n\n× rollout-v2.service - Agent-built rollout v2 slot\n Loaded: loaded (/etc/systemd/system/rollout-v2.service; enabled; preset: ignored)\n Active: failed (Result: start-limit-hit) since Sun 2026-09-13 17:32:54 UTC; 3s ago\n Duration: 74ms\n Invocation: 7bdd96581c414d52b3b8328fe9310c13\n Process: 650 ExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /opt/rollout/v2.py (code=exited, status=2)\n Main PID: 650 (code=exited, status=2)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Mem peak: 4.1M\n CPU: 35ms\n\nSep 13 17:32:54 rollout-three systemd[1]: rollout-v2.service: Scheduled restart job, restart counter is at 5.\nSep 13 17:32:54 rollout-three systemd[1]: rollout-v2.service: Start request repeated too quickly.\nSep 13 17:32:54 rollout-three systemd[1]: rollout-v2.service: Failed with result 'start-limit-hit'.\nSep 13 17:32:54 rollout-three systemd[1]: Failed to start Agent-built rollout v2 slot.\n\n● rollout-proxy.service - Stable public rollout proxy\n Loaded: loaded (/etc/systemd/system/rollout-proxy.service; enabled; preset: ignored)\n Active: active (running) since Sun 2026-09-13 17:32:47 UTC; 9s ago\n Invocation: c3f3087133dd495e9a5575d55e060b74\n Main PID: 543 (python)\n IP: 125.5K in, 124.4K out\n IO: 0B read, 0B written\n Tasks: 2 (limit: 811)\n Memory: 16.6M (peak: 16.7M)\n CPU: 373ms\n CGroup: /system.slice/rollout-proxy.service\n └─543 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/08ib8hkpsxizx3zrsv266idphl0r1hgb-rollout-proxy.py\n\nSep 13 17:32:47 rollout-three systemd[1]: Started Stable public rollout proxy.\n", "is_error": false, "read_only": false, "started_after_ms": 1801, "duration_ms": 93 }, { "id": "call_3e504aad63d240d8b9964426", "name": "Glob", "input": { "pattern": "/etc/systemd/system/rollout*" }, "output": "No matches found", "is_error": false, "read_only": true, "started_after_ms": 1894, "duration_ms": 0 }, { "id": "call_1f78c27a7c8f49a690a52567", "name": "Bash", "input": { "command": "ls -la /opt/rollout/ 2>/dev/null || echo \"Directory does not exist\"", "description": "Check /opt/rollout directory" }, "output": "total 8\ndrwxr-xr-x 2 root root 4096 Sep 13 17:32 .\ndrwxr-xr-x 3 root root 4096 Sep 13 17:32 ..\n", "is_error": false, "read_only": false, "started_after_ms": 2883, "duration_ms": 25 }, { "id": "call_ad66ab40980e4a02907d2566", "name": "Bash", "input": { "command": "cat /nix/store/13qi755lbgrlrh6c5jqjdlpf1f7nvffv-rollout-v1.py 2>/dev/null || find /nix -name 'rollout-v1.py' 2>/dev/null | head -1 | xargs cat 2>/dev/null || echo \"Not found\"", "description": "Read v1 service code" }, "output": "import sqlite3\nfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n\nDB = \"/var/lib/rollout/records.sqlite3\"\n\ndef database():\n connection = sqlite3.connect(DB, timeout=10)\n connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n return connection\n\nclass Handler(BaseHTTPRequestHandler):\n def send(self, status, body=b\"\"):\n self.send_response(status)\n self.send_header(\"Content-Length\", str(len(body)))\n self.end_headers()\n self.wfile.write(body)\n\n def do_GET(self):\n if self.path == \"/health\":\n self.send(200, b\"ready\")\n return\n if self.path == \"/version\":\n self.send(200, b\"v1\")\n return\n if self.path.startswith(\"/records/\"):\n connection = database()\n row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone()\n connection.close()\n if row is None:\n self.send(404)\n else:\n self.send(200, row[0].encode())\n return\n self.send(404)\n\n def do_PUT(self):\n if not self.path.startswith(\"/records/\"):\n self.send(404)\n return\n value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode()\n connection = database()\n connection.execute(\n \"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\",\n (self.path[9:], value),\n )\n connection.commit()\n connection.close()\n self.send(204)\n\n def log_message(self, *_):\n pass\n\nThreadingHTTPServer((\"127.0.0.1\", 8081), Handler).serve_forever()\n", "is_error": false, "read_only": false, "started_after_ms": 2908, "duration_ms": 25 }, { "id": "call_ec9da4b0d33b44d48fa05765", "name": "Bash", "input": { "command": "find /nix -name 'rollout-proxy.py' 2>/dev/null | head -1 | xargs cat 2>/dev/null", "description": "Read proxy code" }, "output": "Command timed out after 120000ms", "is_error": true, "read_only": false, "started_after_ms": 2933, "duration_ms": 120015 } ], "timing": { "total_duration_ms": 124010, "model_rounds": [ { "index": 1, "started_after_ms": 0, "duration_ms": 1735, "status": "completed", "usage": { "input_tokens": 3635, "output_tokens": 380, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.0002024 } }, { "index": 2, "started_after_ms": 2040, "duration_ms": 842, "status": "completed", "usage": { "input_tokens": 4949, "output_tokens": 265, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.00023771 } }, { "index": 3, "started_after_ms": 122950, "duration_ms": 1060, "status": "completed", "usage": { "input_tokens": 5794, "output_tokens": 131, "cache_read_tokens": 0, "cache_creation_tokens": 0, "cost_usd": 0.00025141 } } ] } }