loopitem in callee's dvar

    tasks:
    - name: task
      task:
      - func: call
        do:
        - subtask1
        loop:
        - tom
        - jerry
        - emily
    - name: subtask1
      task:
      - func: cmd
        do:
        - name: print
          cmd: '{{.loopindex1}}:{{.loopitem}}'
      - func: cmd
        do:
        - name: assert
          cmd:
          - '{{eq .loopitem "tom"}}'
        if: '{{eq .loopindex1 1}}'
      - func: cmd
        vars:
          person: '{{.loopitem}}'
        do:
        - name: print
          cmd: '{{.person}}'
      - func: cmd
        dvars:
        - name: theone
          value: '{{.loopitem}}'
        do:
        - name: print
          cmd: '{{.theone}}'
    

    loading [Config]:  ./tests/functests/upconfig.yml
    Main config:
                 Version -> 1.0.0
                  RefDir -> ./tests/functests
                 WorkDir -> cwd
              AbsWorkDir -> /up_project/up
                TaskFile -> c0110
                 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/c0110
    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
    })
    
    =Task2: [task ==> subtask1:  ]
    --Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopindex": 0,
      "loopindex1": 1,
      "up_runtime_task_layer_number": 1,
      "loopitem": "tom"
    })
    
    ~~SubStep1: [print:  ]
    1:tom
    --Step2:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopindex": 0,
      "loopindex1": 1,
      "up_runtime_task_layer_number": 1,
      "loopitem": "tom"
    })
    
    ~~SubStep1: [assert:  ]
     1 ASSERT OK:     [{{eq .loopitem "tom"}}]
    --Step3:
    self: final context exec vars:
    
    (*core.Cache)({
      "up_runtime_task_layer_number": 1,
      "loopitem": "tom",
      "loopindex": 0,
      "loopindex1": 1,
      "person": "{{.loopitem}}"
    })
    
    ~~SubStep1: [print:  ]
    {{.loopitem}}
    --Step4:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopitem": "tom",
      "loopindex": 0,
      "loopindex1": 1,
      "up_runtime_task_layer_number": 1,
      "theone": "tom"
    })
    
    ~~SubStep1: [print:  ]
    tom
    =Task2: [task ==> subtask1:  ]
    --Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopitem": "jerry",
      "loopindex": 1,
      "loopindex1": 2,
      "up_runtime_task_layer_number": 1
    })
    
    ~~SubStep1: [print:  ]
    2:jerry
    --Step2:
    self: final context exec vars:
    
    (*core.Cache)({
      "up_runtime_task_layer_number": 1,
      "loopitem": "jerry",
      "loopindex": 1,
      "loopindex1": 2
    })
    
    condition failed, skip executing step 
    
    --Step3:
    self: final context exec vars:
    
    (*core.Cache)({
      "up_runtime_task_layer_number": 1,
      "person": "{{.loopitem}}",
      "loopitem": "jerry",
      "loopindex": 1,
      "loopindex1": 2
    })
    
    ~~SubStep1: [print:  ]
    {{.loopitem}}
    --Step4:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopitem": "jerry",
      "loopindex": 1,
      "theone": "jerry",
      "loopindex1": 2,
      "up_runtime_task_layer_number": 1
    })
    
    ~~SubStep1: [print:  ]
    jerry
    =Task2: [task ==> subtask1:  ]
    --Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopitem": "emily",
      "loopindex": 2,
      "loopindex1": 3,
      "up_runtime_task_layer_number": 1
    })
    
    ~~SubStep1: [print:  ]
    3:emily
    --Step2:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopindex1": 3,
      "up_runtime_task_layer_number": 1,
      "loopitem": "emily",
      "loopindex": 2
    })
    
    condition failed, skip executing step 
    
    --Step3:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopindex": 2,
      "loopindex1": 3,
      "person": "{{.loopitem}}",
      "up_runtime_task_layer_number": 1,
      "loopitem": "emily"
    })
    
    ~~SubStep1: [print:  ]
    {{.loopitem}}
    --Step4:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopindex1": 3,
      "up_runtime_task_layer_number": 1,
      "loopitem": "emily",
      "loopindex": 2,
      "theone": "emily"
    })
    
    ~~SubStep1: [print:  ]
    emily