deepseek-ai/deepseek-harness · error · Error

${error}${diagnostic}${partial}

Error message

${error}${diagnostic}${partial}

What it means

Error "${error}${diagnostic}${partial}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/subagent/tool-subagent/src/index.ts:183

type ForegroundToolResult = {
  readonly kind: 'foreground'
  readonly runId: SubagentRun['id']
  readonly output: JsonValue[]
}

/**
 * Collect and release one foreground run without letting disposal replace an
 * independent result failure.
 */
async function settleForegroundRun(run: SubagentRun): Promise<ForegroundToolResult> {
  const [execution] = await Promise.allSettled([
    run.result.then((result): ForegroundToolResult => {
      const error = stopReasonError(result)
      if (error !== undefined) {
        // The registry converts this throw to isError; partial output is not
        // success, but the preserved partial answer still reaches the parent.
        throw new Error(withDiagnosticAndPartialText(error, result))
      }
      return {
        kind: 'foreground',
        runId: run.id,
        // Content blocks already cross durable JSON boundaries elsewhere;
        // the registry performs the authoritative lossless snapshot here.
        output: result.output as unknown as JsonValue[],
      }
    }),
  ])
  const [disposal] = await Promise.allSettled([Promise.resolve().then(() => run.dispose())])
  if (execution.status === 'rejected') {
    if (disposal.status === 'rejected') {
      throw new AggregateError(
        [execution.reason, disposal.reason],
        `subagent run failed: ${String(execution.reason)}; dispose failed: ${String(disposal.reason)}`,
      )
    }

View on GitHub (pinned to b150a551b8)

Solutions

1. Read the error, diagnostic, and partial-output parts of the message and fix the reported subagent failure.

When it happens

Trigger: Thrown at packages/subagent/tool-subagent/src/index.ts:183 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/defa61c2ec4d8bb2. Report an issue: GitHub.