handle std err

    tasks:
    - name: task
      task:
      - func: shell
        do:
        - ./tests/functests/mock_error.sh
    

    loading [Config]:  ./tests/functests/upconfig.yml
    Main config:
                 Version -> 1.0.0
                  RefDir -> ./tests/functests
                 WorkDir -> cwd
              AbsWorkDir -> /up_project/up
                TaskFile -> f0178
                 Verbose -> vvv
              ModuleName -> self
               ShellType -> /bin/sh
           MaxCallLayers -> 8
                 Timeout -> 3600000
     MaxModuelCallLayers -> 256
               EntryTask -> task
      ModRepoUsernameRef -> 
      ModRepoPasswordRef -> 
    work dir: /up_project/up
    -exec task: task
    loading [Task]:  ./tests/functests/f0178
    module: [self], instance id: [dev], exec profile: []
    profile -  envVars:
    
    (*core.Cache)({
    })
    
    Task1: [task ==> task:  ]
    -Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "up_runtime_task_layer_number": 0
    })
    
    cmd( 1):
    ./tests/functests/mock_error.sh
    
    -
    executing workflow .......
    step 1 .......
    step m .......
    encountering an error ......
    error 1 ......
    error 2 ......
    ./tests/functests/mock_error.sh: exit: line 11: Illegal number: -1
    
    -
     .. failed(suppressed if it is not the last step)
     WARN: [Not rescued in task level] - [please assess the panic problem and cause, fix it before re-run the task]
    task finally ->   ERROR: Failed And Not Ignored! [You may want to continue and ignore the error]