stablyai/orca · error · Error

Electron trial exhausted launcher attempts

Error message

Electron trial exhausted launcher attempts

What it means

Terminal throw at the end of runTrial's retry loop, reached only if all MAX_LAUNCH_ATTEMPTS (3) attempts returned status 0 with no RESULT_PREFIX line AND no stderr AND no stdout. The loop's inner conditions would normally throw [69] on the final attempt or whenever noise is present; this line is a defensive guard for the silent-failure case where every attempt produces a clean but empty output.

Solutions

  1. Run the launcher manually to see whether runInternal is reached at all.
  2. Confirm the script file is the real benchmark and not a stub/empty file.
  3. Check that stdout is not redirected or consumed by a wrapper in CI.
  4. Rebuild the entry and verify electronPath() resolves a working binary.
Defensive patterns

Strategy: retry

Validate before calling

// Pre-flight: run the launcher once manually to confirm runInternal produces output
const probe = spawnSync(executable, ['--js-flags=--expose-gc', launcherDir], { encoding: 'utf8', timeout: 90_000 })
if (probe.status === 0 && !probe.stdout.includes(RESULT_PREFIX)) {
  throw new Error('launcher produces no RESULT line; script may be stubbed or stdout redirected')
}

Prevention

When it happens

Trigger: Electron launches and exits 0 but prints absolutely nothing on all three attempts — e.g. the launcher main.cjs import resolved to a no-op, the script was stubbed, or stdout is fully swallowed by the environment (buffering/pipe closure).

Common situations: Misconfigured test harness that replaces the script with a stub, CI runners that close/redirect stdout, or an Electron build that exits cleanly before reaching runInternal.

Related errors

AI-assisted analysis of stablyai/orca@1136503c6a (2026-08-12). Data as JSON: /api/errors/037b81f3c383ef92. Report an issue: GitHub.

Appendix: source

Thrown at config/scripts/hang-watchdog-memory-benchmark.mjs:357

      })
    } finally {
      rmSync(launcherDir, { recursive: true, force: true })
    }
    if (result.status !== 0) {
      throw new Error(
        `Electron trial failed (${result.error?.message ?? result.signal ?? result.status}):\n` +
          `${result.stderr || result.stdout}`
      )
    }
    const line = result.stdout.split('\n').find((candidate) => candidate.startsWith(RESULT_PREFIX))
    if (line) {
      return { ...JSON.parse(line.slice(RESULT_PREFIX.length)), launchAttempts: attempt }
    }
    if (attempt === MAX_LAUNCH_ATTEMPTS || result.stderr || result.stdout) {
      throw new Error(`Electron trial did not report a result (status ${result.status})`)
    }
  }
  throw new Error('Electron trial exhausted launcher attempts')
}

function runBenchmark() {
  if (process.platform !== 'darwin') {
    throw new Error('The production watchdog is macOS-only; run this benchmark on macOS')
  }
  if (!existsSync(entryPath)) {
    throw new Error(`Missing ${entryPath}; run pnpm exec electron-vite build first`)
  }
  const options = parseArgs(process.argv.slice(2))
  const builtEntry = readFileSync(entryPath, 'utf8')
  const hasChildContract = builtEntry.includes('ORCA_HANG_WATCHDOG_PARENT_PID')
  const hasWorkerContract = builtEntry.includes('workerData') && builtEntry.includes('parentPort')
  if (
    (options.boundary === 'child' && !hasChildContract) ||
    (options.boundary === 'worker' && !hasWorkerContract)
  ) {
    throw new Error(

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