update error info

server/taskresult.go

@@ -11,6 +11,10 @@ import (
 	"time"
 )
 
+var (
+	ErrExecuteFailed = errors.New("execute failed")
+)
+
 func (wm *WorkerManager) taskResult(worker *Worker, task *odysseus.TaskContent, result *omanager.SubmitTaskResult) (*odysseus.TaskProof, error) {
 	switch task.TaskKind {
 	case odysseus.TaskKind_ComputeTask:
@@ -43,7 +47,7 @@ func (wm *WorkerManager) computeTaskResult(worker *Worker, task *odysseus.TaskCo
 			TaskFee:          task.TaskFee,
 			TaskIsSucceed:    false,
 			TaskResultCode:   result.TaskResultCode,
-			TaskError:        "worker failed",
+			TaskError:        ErrExecuteFailed.Error(),
 		}
 		receipt := wm.makeReceipt(worker, task, result, errors.New("worker failed"))
 		wm.node.PostResult(receipt)