{"record":{"id":"f6fdbdd22d8ebdca","repo":"abhigyanpatwari/GitNexus","slug":"managed-command-failed-result-state-exit-resu-f6fdbd","errorCode":null,"errorMessage":"managed command failed ({result.state}, exit={result.returncode}): {result.detail or result.stderr_tail[-1000:]}","messagePattern":"managed command failed \\((.+?), exit=(.+?)\\): (.+?)","errorType":"exception","errorClass":"ManagedProcessError","httpStatus":null,"severity":"error","filePath":"eval/workflow_bench/runner.py","lineNumber":1136,"sourceCode":"                            ],\n                            preflight=False,\n                        ) as sandbox:\n                            # Capture the BASE (pre-overlay) skill digest — identical\n                            # for the incumbent and candidate arms — then run the\n                            # task's untrusted setup against those base skills. The\n                            # candidate overlay is applied only afterwards, so setup\n                            # can never observe candidate prose and both arms share\n                            # byte-identical pre-overlay state.\n                            base_skill_digest = skill_fingerprint(worktree, execution_arm)\n                            if task.get(\"setup\"):\n                                setup_command = [\"/bin/sh\", \"-lc\", str(task[\"setup\"])]\n                                setup = sandbox.run(\n                                    setup_command,\n                                    timeout=600,\n                                    env=build_sandbox_environment(),\n                                )\n                                if not setup.ok:\n                                    raise ManagedProcessError(setup_command, setup)\n                            # Tamper-evidence: setup must not have rewritten the base\n                            # skills, verified before any candidate overlay lands.\n                            require_skill_fingerprint(\n                                worktree,\n                                execution_arm,\n                                base_skill_digest,\n                                phase=\"task setup\",\n                            )\n                            if arm in CANDIDATE_ARMS:\n                                assert candidate_overlay is not None\n                                applied_digest = apply_candidate_overlay(\n                                    candidate_overlay,\n                                    worktree,\n                                    sandbox=sandbox,\n                                )\n                                if applied_digest != overlay_digest:\n                                    raise RuntimeError(\"candidate overlay changed during the benchmark run\")\n                            # The digest the model must preserve during its run is the","sourceCodeStart":1118,"sourceCodeEnd":1154,"githubUrl":"https://github.com/abhigyanpatwari/GitNexus/blob/d540b00184d71a896261ee02670da9a92d59d8f7/eval/workflow_bench/runner.py#L1118-L1154","documentation":"A ManagedProcessError raised after a task's setup command run via sandbox.run(...) returned a non-ok result (state != 'exited' or returncode != 0). The message records the process state, exit code, and either the result.detail or the last 1000 chars of stderr_tail. This is the harness telling you the task's own setup script failed inside the bubblewrap boundary, aborting the arm before the model session starts.","triggerScenarios":"task['setup'] is a shell command; it is run as `/bin/sh -lc <setup>` with a 600s timeout via sandbox.run; setup.ok is False — the command exited non-zero, timed out, or was force-killed, so `raise ManagedProcessError(setup_command, setup)` fires.","commonSituations":"The setup script has a bug or references a missing file/tool; a dependency install (npm/pip) failed due to network or registry issues (note: sandbox may unshare-net); the setup command exceeded the 600s timeout; an env var or path expected by setup is not present in build_sandbox_environment(); a flaky external resource the setup reaches for is unavailable.","solutions":["Read the embedded stderr_tail/detail in the message — it is the setup command's own failure output.","Run the setup command manually in the same worktree/SHA with the sandbox environment to reproduce: `bash -lc '<setup>'` after exporting build_sandbox_environment() vars.","Fix the setup script (correct paths, install the right deps, handle the sandbox's allowlisted env / possible network unsharing).","If the 600s timeout was hit, optimize the setup step or break it into faster pieces; do not silently raise the timeout."],"exampleFix":"# before — setup fails: missing dependency\nsetup: |\n  cd gitnexus && npx vitest --version   # vitest not installed yet\n# after — install before invoking\nsetup: |\n  cd gitnexus && npm ci && npx vitest --version","handlingStrategy":"try-catch","validationCode":"# reproduce the setup command in the same sandbox env before the arm runs\nresult = sandbox.run(['/bin/sh', '-lc', str(task['setup'])], timeout=600, env=build_sandbox_environment())\nif not result.ok:\n    raise SystemExit(f'setup failed: {result.detail or result.stderr_tail[-1000:]}')","typeGuard":null,"tryCatchPattern":"from .process_control import ManagedProcessError\n\ntry:\n    if task.get('setup'):\n        setup = sandbox.run(['/bin/sh', '-lc', str(task['setup'])], timeout=600, env=build_sandbox_environment())\n        if not setup.ok:\n            raise ManagedProcessError(['/bin/sh', '-lc', str(task['setup'])], setup)\nexcept ManagedProcessError as exc:\n    # inspect exc.result.state, returncode, stderr_tail/detail for the cause\n    raise","preventionTips":["Test each task's setup script locally with the sandbox environment before authoring.","Account for the sandbox's allowlisted env and possible network unsharing in setup.","Keep setup steps under the 600s timeout; optimize slow installs rather than lengthening it."],"tags":["runner","task-setup","managed-process","sandbox","process-control"],"backgroundTag":null,"analyzedSha":"d540b00184d71a896261ee02670da9a92d59d8f7","analyzedAt":"2026-08-12T19:50:25.132Z","schemaVersion":2},"datasetVersion":"2026-08-13T04:17:16.726Z"}