deepseek-ai/deepseek-harness · error · Error

subprocess output stream is closed

Error message

subprocess output stream is closed

What it means

Error "subprocess output stream is closed" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/e2b/subprocess-e2b/src/process.ts:461

    }
    try {
      if (stream === 'stdout') {
        this.stdoutReader?.push(bytes)
        await this.writeOutput(this.stdout, this.spec.stdio.stdout === 'inherit' ? process.stdout : undefined, bytes)
        return
      }
      this.stderrReader?.push(bytes)
      await this.writeOutput(this.stderr, this.spec.stdio.stderr === 'inherit' ? process.stderr : undefined, bytes)
    } catch (error: unknown) {
      const target = stream === 'stdout' ? this.stdout : this.stderr
      target?.destroy(asError(error))
    }
  }

  private async writeOutput(pipe: PassThrough | undefined, inherited: NodeJS.WriteStream | undefined, data: Uint8Array): Promise<void> {
    const target = pipe ?? inherited
    if (target === undefined || data.length === 0 || this.terminationController.signal.aborted) return
    if (target.destroyed) throw new Error('subprocess output stream is closed')
    if (target.write(data)) return
    await new Promise<void>((resolve, reject) => {
      const onDrain = (): void => { cleanup(); resolve() }
      const onClose = (): void => { cleanup(); resolve() }
      const onRelease = (): void => { cleanup(); resolve() }
      const onError = (error: Error): void => { cleanup(); reject(error) }
      const cleanup = (): void => {
        target.removeListener('drain', onDrain)
        target.removeListener('close', onClose)
        target.removeListener('error', onError)
        this.terminationController.signal.removeEventListener('abort', onRelease)
        this.outputReleased.signal.removeEventListener('abort', onRelease)
      }
      target.once('drain', onDrain)
      target.once('close', onClose)
      target.once('error', onError)
      this.terminationController.signal.addEventListener('abort', onRelease, { once: true })
      this.outputReleased.signal.addEventListener('abort', onRelease, { once: true })

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/e2b/subprocess-e2b/src/process.ts:461 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/90034c5e4d483ef0. Report an issue: GitHub.