deepseek-ai/deepseek-harness · error · Error

subprocess-e2b: output transport continued after completion

Error message

subprocess-e2b: output transport continued after completion

What it means

Error "subprocess-e2b: output transport continued after completion" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/e2b/subprocess-e2b/src/output.ts:35

   * Decode every complete newline-delimited frame in one arbitrarily split SDK callback.
   * @param text - ASCII base64 frames from E2B's decoded callback.
   * @returns the complete raw bytes made available by this callback.
   */
  push(text: string): Buffer {
    if (text.length === 0) return Buffer.alloc(0)
    this.pending += text
    const decoded: Buffer[] = []
    for (;;) {
      const boundary = this.pending.indexOf('\n')
      if (boundary < 0) break
      const frame = this.pending.slice(0, boundary)
      this.pending = this.pending.slice(boundary + 1)
      if (frame === E2B_OUTPUT_COMPLETE_FRAME) {
        if (this.complete) throw new Error('subprocess-e2b: duplicate output transport completion')
        this.complete = true
        continue
      }
      if (this.complete) throw new Error('subprocess-e2b: output transport continued after completion')
      if (!BASE64_TEXT.test(frame)) {
        throw new Error('subprocess-e2b: invalid base64 output transport')
      }
      const bytes = Buffer.from(frame, 'base64')
      if (bytes.toString('base64') !== frame) {
        throw new Error('subprocess-e2b: invalid base64 output transport')
      }
      decoded.push(bytes)
    }
    return Buffer.concat(decoded)
  }

  /**
   * Validate clean encoder completion, or discard an interrupted trailing frame after requested termination.
   * @param requireComplete - Whether natural completion requires the reserved EOF frame.
   */
  finish(requireComplete = true): void {
    if (!requireComplete) {

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/e2b/subprocess-e2b/src/output.ts:35 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/1e1f1a9dd9d90100. Report an issue: GitHub.