{"schema_version": 2, "harness": "opencode", "tool_trace": [{"id": "call_7IlUDH3CnvnNTNtOBrwXmti4", "name": "todowrite", "input": {"todos": [{"content": "Inspect the provided deployment slot and host service configuration", "status": "in_progress", "priority": "high"}, {"content": "Implement the HTTP service with durable record storage", "status": "pending", "priority": "high"}, {"content": "Start and enable the existing systemd unit", "status": "pending", "priority": "high"}, {"content": "Verify health, CRUD behavior, persistence, and boot-safe deployment", "status": "pending", "priority": "high"}]}, "output": "[\n  {\n    \"content\": \"Inspect the provided deployment slot and host service configuration\",\n    \"status\": \"in_progress\",\n    \"priority\": \"high\"\n  },\n  {\n    \"content\": \"Implement the HTTP service with durable record storage\",\n    \"status\": \"pending\",\n    \"priority\": \"high\"\n  },\n  {\n    \"content\": \"Start and enable the existing systemd unit\",\n    \"status\": \"pending\",\n    \"priority\": \"high\"\n  },\n  {\n    \"content\": \"Verify health, CRUD behavior, persistence, and boot-safe deployment\",\n    \"status\": \"pending\",\n    \"priority\": \"high\"\n  }\n]", "is_error": false, "read_only": false, "started_after_ms": 1525, "duration_ms": 19}, {"id": "call_5JgaZBwUCggvPFZnNzuzOhHh", "name": "bash", "input": {"command": "pwd && ls -la /opt && ls -la /opt/builder", "workdir": "/"}, "output": "/\nls: cannot access '/opt': No such file or directory\n", "is_error": true, "read_only": false, "started_after_ms": 4038, "duration_ms": 214}, {"id": "call_NBaUmCVDjik7Pb77KnuY61ne", "name": "bash", "input": {"command": "ls -la /etc/systemd/system /lib/systemd/system | grep builder-app || true", "workdir": "/"}, "output": "ls: cannot access '/lib/systemd/system': No such file or directory\n", "is_error": false, "read_only": false, "started_after_ms": 4074, "duration_ms": 206}, {"id": "call_9jqAgVI8uQDdJQz8svPjIz6Y", "name": "bash", "input": {"command": "systemctl cat builder-app.service && systemctl status builder-app.service --no-pager", "workdir": "/", "timeout": 120000}, "output": "# /etc/systemd/system/builder-app.service -> /nix/store/bkhc7c1djj4z9s51r616fqfbc55zwdvs-unit-builder-app.service/builder-app.service\n[Unit]\nAfter=network.target\nDescription=Agent-built application slot\n\n[Service]\nEnvironment=\"LOCALE_ARCHIVE=/nix/store/54jg0kk0cn5h7j19r0l8x36fmbfywwjj-glibc-locales-2.42-67/lib/locale/locale-archive\"\nEnvironment=\"PATH=/nix/store/di26b1kkbammy0sj70nq5qzvfrh78wxl-coreutils-9.11/bin:/nix/store/fcqbwp5hx5wh3lzf0457wmf0divknz7y-findutils-4.11.0/bin:/nix/store/aak8d9mrdv9sgn0lcg7xss7wxdg9sqh3-gnugrep-3.12/bin:/nix/store/7mfsmbhsd3arnypipwm251rcd0b45riy-gnused-4.10/bin:/nix/store/r6sz8p6sd6c73fp9z8nzl04dri7lyx8n-systemd-261.1/bin:/nix/store/di26b1kkbammy0sj70nq5qzvfrh78wxl-coreutils-9.11/sbin:/nix/store/fcqbwp5hx5wh3lzf0457wmf0divknz7y-findutils-4.11.0/sbin:/nix/store/aak8d9mrdv9sgn0lcg7xss7wxdg9sqh3-gnugrep-3.12/sbin:/nix/store/7mfsmbhsd3arnypipwm251rcd0b45riy-gnused-4.10/sbin:/nix/store/r6sz8p6sd6c73fp9z8nzl04dri7lyx8n-systemd-261.1/sbin\"\nEnvironment=\"TZDIR=/nix/store/2nndxyf3phkb5aggxm3c16sapa0f49kz-tzdata-2026c/share/zoneinfo\"\nExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py\nRestart=always\nRestartSec=1\n\n[Install]\nWantedBy=multi-user.target\n× builder-app.service - Agent-built application slot\n     Loaded: loaded (/etc/systemd/system/builder-app.service; enabled; preset: ignored)\n     Active: failed (Result: start-limit-hit) since Sun 2026-09-13 02:19:58 UTC; 19s ago\n   Duration: 55ms\n Invocation: 89f3e4004cae434ba08269e80599e6eb\n    Process: 617 ExecStart=/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python /opt/builder/app.py (code=exited, status=2)\n   Main PID: 617 (code=exited, status=2)\n         IP: 0B in, 0B out\n         IO: 0B read, 0B written\n   Mem peak: 4.3M\n        CPU: 33ms\n\nSep 13 02:19:58 builder-one systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 5.\nSep 13 02:19:58 builder-one systemd[1]: builder-app.service: Start request repeated too quickly.\nSep 13 02:19:58 builder-one systemd[1]: builder-app.service: Failed with result 'start-limit-hit'.\nSep 13 02:19:58 builder-one systemd[1]: Failed to start Agent-built application slot.\n", "is_error": true, "read_only": false, "started_after_ms": 4064, "duration_ms": 228}, {"id": "call_QXyjJWAHoWNGIOUm6Zy0X8cO", "name": "bash", "input": {"command": "journalctl -u builder-app.service -n 30 --no-pager", "workdir": "/", "timeout": 120000}, "output": "Sep 13 02:19:51 builder-one systemd[1]: Started Agent-built application slot.\nSep 13 02:19:52 builder-one python[538]: /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python: can't open file '/opt/builder/app.py': [Errno 2] No such file or directory\nSep 13 02:19:52 builder-one systemd[1]: builder-app.service: Main process exited, code=exited, status=2/INVALIDARGUMENT\nSep 13 02:19:52 builder-one systemd[1]: builder-app.service: Failed with result 'exit-code'.\nSep 13 02:19:53 builder-one systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 1.\nSep 13 02:19:53 builder-one systemd[1]: Started Agent-built application slot.\nSep 13 02:19:53 builder-one python[588]: /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python: can't open file '/opt/builder/app.py': [Errno 2] No such file or directory\nSep 13 02:19:53 builder-one systemd[1]: builder-app.service: Main process exited, code=exited, status=2/INVALIDARGUMENT\nSep 13 02:19:53 builder-one systemd[1]: builder-app.service: Failed with result 'exit-code'.\nSep 13 02:19:54 builder-one systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 2.\nSep 13 02:19:54 builder-one systemd[1]: Started Agent-built application slot.\nSep 13 02:19:54 builder-one python[598]: /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python: can't open file '/opt/builder/app.py': [Errno 2] No such file or directory\nSep 13 02:19:54 builder-one systemd[1]: builder-app.service: Main process exited, code=exited, status=2/INVALIDARGUMENT\nSep 13 02:19:54 builder-one systemd[1]: builder-app.service: Failed with result 'exit-code'.\nSep 13 02:19:55 builder-one systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 3.\nSep 13 02:19:55 builder-one systemd[1]: Started Agent-built application slot.\nSep 13 02:19:55 builder-one python[615]: /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python: can't open file '/opt/builder/app.py': [Errno 2] No such file or directory\nSep 13 02:19:55 builder-one systemd[1]: builder-app.service: Main process exited, code=exited, status=2/INVALIDARGUMENT\nSep 13 02:19:55 builder-one systemd[1]: builder-app.service: Failed with result 'exit-code'.\nSep 13 02:19:57 builder-one systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 4.\nSep 13 02:19:57 builder-one systemd[1]: Started Agent-built application slot.\nSep 13 02:19:57 builder-one python[617]: /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python: can't open file '/opt/builder/app.py': [Errno 2] No such file or directory\nSep 13 02:19:57 builder-one systemd[1]: builder-app.service: Main process exited, code=exited, status=2/INVALIDARGUMENT\nSep 13 02:19:57 builder-one systemd[1]: builder-app.service: Failed with result 'exit-code'.\nSep 13 02:19:58 builder-one systemd[1]: builder-app.service: Scheduled restart job, restart counter is at 5.\nSep 13 02:19:58 builder-one systemd[1]: builder-app.service: Start request repeated too quickly.\nSep 13 02:19:58 builder-one systemd[1]: builder-app.service: Failed with result 'start-limit-hit'.\nSep 13 02:19:58 builder-one systemd[1]: Failed to start Agent-built application slot.\n", "is_error": false, "read_only": false, "started_after_ms": 8929, "duration_ms": 153}, {"id": "call_WCYbr4Rlx7p7tDNUIqqKaRzH", "name": "bash", "input": {"command": "ls -la / && ls -la /var/lib", "workdir": "/"}, "output": "total 64\ndrwxr-xr-x  17 root root  4096 Sep 13 02:19 .\ndrwxr-xr-x  17 root root  4096 Sep 13 02:19 ..\ndrwxr-xr-x   2 root root  4096 Sep 13 02:19 bin\ndrwxr-xr-x  17 root root  3260 Sep 13 02:19 dev\ndrwxr-xr-x  21 root root  4096 Sep 13 02:19 etc\ndrwxr-xr-x   2 root root  4096 Sep 13 02:19 home\ndrwxr-xr-x   2 root root  4096 Sep 13 02:19 lib64\ndrwx------   2 root root 16384 Jan  1  1980 lost+found\ndrwxr-xr-x   6 root root  4096 Sep 13 02:19 nix\ndr-xr-xr-x 105 root root     0 Sep 13 02:19 proc\ndrwx------   6 root root  4096 Sep 13 02:20 root\ndrwxr-xr-x  19 root root   500 Sep 13 02:19 run\ndrwxr-xr-x   2 root root  4096 Sep 13 02:19 srv\ndr-xr-xr-x  13 root root     0 Sep 13 02:19 sys\ndrwxrwxrwt  12 root root  4096 Sep 13 02:20 tmp\ndrwxr-xr-x   3 root root  4096 Sep 13 02:19 usr\ndrwxr-xr-x   9 root root  4096 Sep 13 02:19 var\ntotal 32\ndrwxr-xr-x 8 root root 4096 Sep 13 02:19 .\ndrwxr-xr-x 9 root root 4096 Sep 13 02:19 ..\ndrwxr-xr-x 2 root root 4096 Sep 13 02:19 lastlog\ndrwx------ 2 root root 4096 Sep 13 02:19 machines\ndrwxr-xr-x 2 root root 4096 Sep 13 02:19 nixos\ndrwx------ 2 root root 4096 Sep 13 02:19 portables\ndrwx------ 2 root root 4096 Sep 13 02:19 private\ndrwxr-xr-x 8 root root 4096 Sep 13 02:19 systemd\n", "is_error": false, "read_only": false, "started_after_ms": 8995, "duration_ms": 101}, {"id": "call_O7fXxbeQQncKvrqm2Jhv4JdU", "name": "bash", "input": {"command": "test -x /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python && /nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python -c 'import sqlite3; print(sqlite3.sqlite_version)'", "workdir": "/"}, "output": "3.53.3\n", "is_error": false, "read_only": false, "started_after_ms": 9016, "duration_ms": 147}, {"id": "call_8RDSxbv6CyASX7XHIYT7x1H8", "name": "bash", "input": {"command": "mkdir -p /opt/builder /var/lib/builder-app", "workdir": "/"}, "output": "(no output)", "is_error": false, "read_only": false, "started_after_ms": 15279, "duration_ms": 25}, {"id": "call_zlFXPecrFYZMm3EVRAJMj2kD", "name": "apply_patch", "input": {"patchText": "*** Begin Patch\n*** Add File: /opt/builder/app.py\n+#!/usr/bin/env python3\n+import os\n+import sqlite3\n+from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n+from urllib.parse import unquote, urlsplit\n+\n+\n+HOST = \"0.0.0.0\"\n+PORT = 8080\n+DATABASE = \"/var/lib/builder-app/records.sqlite3\"\n+\n+\n+def open_database():\n+    connection = sqlite3.connect(DATABASE, timeout=30)\n+    connection.execute(\"PRAGMA busy_timeout = 30000\")\n+    return connection\n+\n+\n+def initialize_database():\n+    os.makedirs(os.path.dirname(DATABASE), mode=0o750, exist_ok=True)\n+    with open_database() as connection:\n+        connection.execute(\"PRAGMA journal_mode = WAL\")\n+        connection.execute(\"PRAGMA synchronous = FULL\")\n+        connection.execute(\n+            \"CREATE TABLE IF NOT EXISTS records (\"\n+            \"id TEXT PRIMARY KEY, body BLOB NOT NULL)\"\n+        )\n+\n+\n+def record_id(path):\n+    parsed_path = urlsplit(path).path\n+    parts = parsed_path.split(\"/\")\n+    if len(parts) != 3 or parts[1] != \"records\" or not parts[2]:\n+        return None\n+    return unquote(parts[2])\n+\n+\n+class Handler(BaseHTTPRequestHandler):\n+    protocol_version = \"HTTP/1.1\"\n+\n+    def send_bytes(self, status, body, content_type=\"application/octet-stream\"):\n+        self.send_response(status)\n+        self.send_header(\"Content-Type\", content_type)\n+        self.send_header(\"Content-Length\", str(len(body)))\n+        self.end_headers()\n+        if body:\n+            self.wfile.write(body)\n+\n+    def do_GET(self):\n+        if urlsplit(self.path).path == \"/health\":\n+            self.send_bytes(200, b\"ready\", \"text/plain\")\n+            return\n+\n+        identifier = record_id(self.path)\n+        if identifier is None:\n+            self.send_bytes(404, b\"not found\\n\", \"text/plain\")\n+            return\n+\n+        with open_database() as connection:\n+            row = connection.execute(\n+                \"SELECT body FROM records WHERE id = ?\", (identifier,)\n+            ).fetchone()\n+        if row is None:\n+            self.send_bytes(404, b\"not found\\n\", \"text/plain\")\n+            return\n+        self.send_bytes(200, bytes(row[0]))\n+\n+    def do_PUT(self):\n+        identifier = record_id(self.path)\n+        if identifier is None:\n+            self.send_bytes(404, b\"not found\\n\", \"text/plain\")\n+            return\n+\n+        raw_length = self.headers.get(\"Content-Length\")\n+        try:\n+            length = int(raw_length) if raw_length is not None else -1\n+        except ValueError:\n+            length = -1\n+        if length < 0:\n+            self.send_bytes(411, b\"length required\\n\", \"text/plain\")\n+            return\n+\n+        body = self.rfile.read(length)\n+        if len(body) != length:\n+            self.send_bytes(400, b\"incomplete body\\n\", \"text/plain\")\n+            return\n+\n+        with open_database() as connection:\n+            connection.execute(\n+                \"INSERT INTO records (id, body) VALUES (?, ?) \"\n+                \"ON CONFLICT(id) DO UPDATE SET body = excluded.body\",\n+                (identifier, body),\n+            )\n+            connection.commit()\n+        self.send_bytes(204, b\"\")\n+\n+    def log_message(self, format_string, *args):\n+        return\n+\n+\n+def main():\n+    initialize_database()\n+    server = ThreadingHTTPServer((HOST, PORT), Handler)\n+    server.daemon_threads = True\n+    server.serve_forever()\n+\n+\n+if __name__ == \"__main__\":\n+    main()\n*** End Patch"}, "output": "Success. Updated the following files:\nA opt/builder/app.py", "is_error": false, "read_only": false, "started_after_ms": 22594, "duration_ms": 19}, {"id": "call_FBuxjP6yuvnkvEmucjC0JwMT", "name": "todowrite", "input": {"todos": [{"content": "Inspect the provided deployment slot and host service configuration", "status": "completed", "priority": "high"}, {"content": "Implement the HTTP service with durable record storage", "status": "completed", "priority": "high"}, {"content": "Start and enable the existing systemd unit", "status": "in_progress", "priority": "high"}, {"content": "Verify health, CRUD behavior, persistence, and boot-safe deployment", "status": "pending", "priority": "high"}]}, "output": "[\n  {\n    \"content\": \"Inspect the provided deployment slot and host service configuration\",\n    \"status\": \"completed\",\n    \"priority\": \"high\"\n  },\n  {\n    \"content\": \"Implement the HTTP service with durable record storage\",\n    \"status\": \"completed\",\n    \"priority\": \"high\"\n  },\n  {\n    \"content\": \"Start and enable the existing systemd unit\",\n    \"status\": \"in_progress\",\n    \"priority\": \"high\"\n  },\n  {\n    \"content\": \"Verify health, CRUD behavior, persistence, and boot-safe deployment\",\n    \"status\": \"pending\",\n    \"priority\": \"high\"\n  }\n]", "is_error": false, "read_only": false, "started_after_ms": 27498, "duration_ms": 3}, {"id": "call_GoNAwl5cmUH6HTjP68hR6SYd", "name": "bash", "input": {"command": "ls -l /opt/builder/app.py /var/lib/builder-app", "workdir": "/"}, "output": "-rw-r--r-- 1 root root 3247 Sep 13 02:20 /opt/builder/app.py\n\n/var/lib/builder-app:\ntotal 0\n", "is_error": false, "read_only": false, "started_after_ms": 29634, "duration_ms": 59}, {"id": "call_bh7oz1o6uYIgvLt6f4xo7R0H", "name": "bash", "input": {"command": "/nix/store/gxzhl7aaiid7zp3y47jqqiq7zg5mqpwp-python3-3.14.6/bin/python -m py_compile /opt/builder/app.py", "workdir": "/", "timeout": 120000}, "output": "(no output)", "is_error": false, "read_only": false, "started_after_ms": 29623, "duration_ms": 267}, {"id": "call_a2M9Zoofb5NZAIffOaKehCBo", "name": "bash", "input": {"command": "systemctl reset-failed builder-app.service && systemctl enable --now builder-app.service && systemctl is-enabled builder-app.service && systemctl is-active builder-app.service", "workdir": "/", "timeout": 120000}, "output": "enabled\nactive\n", "is_error": false, "read_only": false, "started_after_ms": 32191, "duration_ms": 627}], "messages": [{"role": "assistant", "content": [{"type": "text", "text": "I’ll inspect the existing service slot and runtime environment, then implement a persistent HTTP service, start it through the provided unit, and verify both API behavior and restart persistence."}]}, {"role": "assistant", "content": [{"type": "text", "text": "The unit is present and enabled, but `/opt/builder` does not exist, which explains the repeated start failures. I’ll place a dependency-free Python server at the exact configured path and use SQLite under `/var/lib/builder-app` so bodies remain byte-for-byte durable across service and host restarts."}]}, {"role": "assistant", "content": [{"type": "text", "text": "The runtime includes Python and SQLite, and the unit runs as root with no filesystem sandboxing. I’m adding a threaded HTTP server with explicit response lengths, raw-byte body handling, SQLite `synchronous=FULL`, and an on-disk data directory under `/var/lib`."}]}, {"role": "assistant", "content": [{"type": "text", "text": "The application compiles cleanly and the deployment paths are in place. I’m clearing the unit’s prior start-limit state, starting it through systemd, and confirming it is enabled for boot rather than launching it manually."}]}], "usage": {"input_tokens": 24, "output_tokens": 1989, "cost_usd": null, "estimated_cost_usd": 0.007639170000000001}, "outcome": {"status": "interrupted", "message": "agent session was interrupted by the referee's host reboot"}, "model": "opencode-go/gpt-5.6-luna"}