multica-ai/multica · error · errTaskPrepareTimeout

%w after %s

Error message

%w after %s

What it means

Error "%w after %s" thrown in multica-ai/multica.

Source

Thrown at server/internal/daemon/daemon.go:6099

	// path that can leak operations into an unrelated workspace when
	// multiple workspaces share a host.
	if task.WorkspaceID == "" {
		return TaskResult{}, fmt.Errorf("refusing to spawn agent: task has no workspace_id (task_id=%s)", task.ID)
	}

	prepareTimeout := d.effectiveTaskPrepareTimeout()
	prepareCtx, cancelPrepare := context.WithTimeoutCause(ctx, prepareTimeout, errTaskPrepareTimeout)
	prepareComplete := false
	defer func() {
		cancelPrepare()
		if prepareComplete || returnErr == nil || !errors.Is(context.Cause(prepareCtx), errTaskPrepareTimeout) {
			return
		}
		// Collapse every deadline shape (context deadline, HTTP cancellation,
		// or the explicit waitForExecutionEnvironment cause) into one sentinel
		// that handleTask can classify as a retryable platform timeout.
		taskResult = TaskResult{}
		returnErr = fmt.Errorf("%w after %s", errTaskPrepareTimeout, prepareTimeout)
	}()

	// task.Repos is the authoritative repo list for this task — when the
	// claimed task belongs to a project with github_repo resources the server
	// has already narrowed it to project repos only. Make sure those URLs are
	// in the per-workspace allowlist and the local cache, otherwise
	// `multica repo checkout` would reject project-only URLs that aren't also
	// bound at the workspace level.
	d.registerTaskRepos(task.WorkspaceID, task.ID, task.Repos)
	defer d.clearTaskRepoRefs(task.WorkspaceID, task.ID)

	entry, ok := d.agents()[provider]
	// A custom runtime profile (MUL-3284) overrides the executable path: the
	// runtime's protocol_family is the provider (so agent.New still selects
	// the right backend), but the actual binary on PATH is the profile's
	// command_name, resolved at registration time and keyed by RuntimeID here.
	// Critically, a custom runtime can live on a host that has NO built-in
	// agent of the same provider installed, so when the runtime is custom we

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Inspect the wrapped error and the timing context for the failing operation.

When it happens

Trigger: Thrown at server/internal/daemon/daemon.go:6099 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of multica-ai/multica@2c0912b6ec (2026-08-15). Data as JSON: /api/errors/1264ee89da5608d2. Report an issue: GitHub.