err logs in worker and scheduler

nomad/worker.go

@@ -255,6 +255,7 @@ func (w *Worker) invokeScheduler(eval *structs.Evaluation, token string) error {
 	// Process the evaluation
 	err = sched.Process(eval)
 	if err != nil {
+		w.logger.Printf("[ERR] worker: scheduler for evaluation %q errored: %v", eval.ID, err)
 		return fmt.Errorf("failed to process evaluation: %v", err)
 	}
 	return nil

scheduler/generic_sched.go

@@ -201,6 +201,7 @@ func (s *GenericScheduler) process() (bool, error) {
 	result, newState, err := s.planner.SubmitPlan(s.plan)
 	s.planResult = result
 	if err != nil {
+		s.logger.Printf("[ERR] sched: %#v: SubmitPlan failed: %v", s.eval, err)
 		return false, err
 	}