multica-ai/multica · error

prepare task temp dir: %w

Error message

prepare task temp dir: %w

What it means

Error "prepare task temp dir: %w" thrown in multica-ai/multica.

Source

Thrown at server/internal/daemon/daemon.go:6635

			}
			// In worktree mode a failed cleanup is NOT survivable: Finalize is
			// about to `git add -A`, so whatever the cleanup could not remove
			// gets committed and delivered as the task's branch — a diff whose
			// content is Multica's own runtime files, which is precisely what
			// this mode promises never to produce. Tell Finalize to abort
			// instead, so nothing is committed and the worktree is kept for
			// inspection. (In place there is no commit and no branch, so a
			// cleanup failure stays a warning: the leftover files are visible
			// in the user's own tree and removable by hand.)
			if cleanupErr != nil && env.LocalWorktree != nil {
				env.LocalWorktree.AbortWithReason(fmt.Errorf(
					"could not remove the runtime's own files from the worktree before committing: %w", cleanupErr))
			}
		}()
	}
	taskTempDir, err := ensureTaskTempDir(env.RootDir, task.WorkspaceID, task.ID)
	if err != nil {
		return TaskResult{}, fmt.Errorf("prepare task temp dir: %w", err)
	}
	defer func() {
		if cerr := os.RemoveAll(taskTempDir); cerr != nil {
			taskLog.Warn("task temp dir cleanup failed", "path", taskTempDir, "error", cerr)
		}
	}()

	// Issue #3999 race A: now that env.WorkDir is on disk, transition the
	// server-side state machine dispatched (or waiting_local_directory) →
	// running. Calling StartTask before Prepare/Reuse let any consumer
	// that read status==running and resolved
	// /multica_workspaces/{ws}/{short-id}/workdir hit FileNotFoundError in
	// the microsecond window before os.MkdirAll ran.
	//
	// On error we return early so handleTask's existing FailTask +
	// taskfailure.Classify path records the failure with the same
	// "start task failed: <…>" string and the same failure_reason
	// taxonomy as before — see MUL-2946 for the classifier contract.

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Check disk space and permissions for the temp directory.

When it happens

Trigger: Thrown at server/internal/daemon/daemon.go:6635 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/12d5171a24c8012f. Report an issue: GitHub.