deepseek-ai/deepseek-harness · error · Error

subprocess-e2b: terminal ${kind} must not contain NUL bytes

Error message

subprocess-e2b: terminal ${kind} must not contain NUL bytes

What it means

Error "subprocess-e2b: terminal ${kind} must not contain NUL bytes" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/e2b/subprocess-e2b/src/terminal.ts:130

      }
      signal.addEventListener('abort', onAbort, { once: true })
      removeAbort = () => { signal.removeEventListener('abort', onAbort) }
    }
    void ready.then(() => { finish(resolve) })
    void completion.then(onExit, onExit)
  })
}

function parsePositiveId(value: string, message: string): number {
  const raw = value.trim()
  const id = Number(raw)
  if (!/^[1-9][0-9]*$/.test(raw) || !Number.isSafeInteger(id)) throw new Error(message)
  return id
}

function serializeValues(values: readonly string[], kind: string): string {
  for (const value of values) {
    if (value.includes('\0')) throw new Error(`subprocess-e2b: terminal ${kind} must not contain NUL bytes`)
  }
  return values.map(value => `${value}\0`).join('')
}

async function terminalSessionId(
  sandbox: Sandbox,
  pid: number,
  envs: Record<string, string>,
  signal?: AbortSignal,
): Promise<number> {
  const result = await sandbox.commands.run(`ps -o sid= -p ${pid}`, commandOpts(envs, signal))
  signal?.throwIfAborted()
  return parsePositiveId(result.stdout, `subprocess-e2b: cannot resolve process session for terminal ${pid}`)
}

async function sessionProcessGroups(
  sandbox: Sandbox,
  sessionId: number,

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/e2b/subprocess-e2b/src/terminal.ts:130 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/9de8a952b8460849. Report an issue: GitHub.