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    "infra_step": true,
    "name": "dest2.checkout https://foo.googlesource.com/bar.submodule.submodule.git submodule update",
    "timeout": 1800.0,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@4@@@"
    ]
  },
  {
    "cmd": [
      "vpython3",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "copy",
      "[CLEANUP]/copy_roll_checkout_tmp_2/source2",
      "/path/to/tmp/"
    ],
    "infra_step": true,
    "name": "dest2.read source source2",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@source2@new2@@@",
      "@@@STEP_LOG_END@source2@@@"
    ]
  },
  {
    "cmd": [],
    "name": "dest2.new source2",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_SUMMARY_TEXT@'new2'@@@"
    ]
  },
  {
    "cmd": [
      "vpython3",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "is_executable",
      "[START_DIR]/checkout/dest2"
    ],
    "infra_step": true,
    "name": "dest2.check executable destination dest2",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "vpython3",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "is_executable",
      "[CLEANUP]/copy_roll_checkout_tmp_2/source2"
    ],
    "infra_step": true,
    "name": "dest2.check executable source source2",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "vpython3",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "copy",
      "[CLEANUP]/copy_roll_checkout_tmp_2/source2",
      "[START_DIR]/checkout/dest2"
    ],
    "infra_step": true,
    "name": "dest2.copy destination dest2",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [],
    "name": "commit message",
    "~followup_annotations": [
      "@@@STEP_SUMMARY_TEXT@roll: dest1, dest2\n\ndest1\nFrom\n    old1\nTo\n    new1\n\ndest2\nFrom\n    old2\nTo\n    new2@@@",
      "@@@SET_BUILD_PROPERTY@dest1@{\"new\": \"new1\", \"old\": \"old1\", \"path\": \"dest1\", \"revision\": \"h3ll0\"}@@@",
      "@@@SET_BUILD_PROPERTY@dest2@{\"new\": \"new2\", \"old\": \"old2\", \"path\": \"dest2\", \"revision\": \"h3ll0\"}@@@"
    ]
  },
  {
    "name": "$result"
  }
]