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    "name": "roll message"
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    "cmd": [],
    "name": "roll message.message",
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      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@template@[{project_name}] Roll {num_commits} commits@@@",
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      "@@@STEP_LOG_LINE@template@{one_liners}@@@",
      "@@@STEP_LOG_LINE@template@@@@",
      "@@@STEP_LOG_LINE@template@{remote}@@@",
      "@@@STEP_LOG_LINE@template@{project_name} Rolled-Commits: {old_revision:.15}..{new_revision:.15}@@@",
      "@@@STEP_LOG_END@template@@@",
      "@@@STEP_LOG_LINE@kwargs@'new_revision': '4444444444444444444444444444444444444444'@@@",
      "@@@STEP_LOG_LINE@kwargs@'num_commits': 4@@@",
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      "@@@STEP_LOG_LINE@kwargs@'project_name': 'proj'@@@",
      "@@@STEP_LOG_LINE@kwargs@'remote': 'https://pigweed.googlesource.com/pigweed/pigweed'@@@",
      "@@@STEP_LOG_END@kwargs@@@",
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      "@@@STEP_LOG_LINE@message@@@@",
      "@@@STEP_LOG_LINE@message@https://pigweed.googlesource.com/pigweed/pigweed@@@",
      "@@@STEP_LOG_LINE@message@proj Rolled-Commits: 000000000000000..444444444444444@@@",
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    "cmd": [],
    "name": "message",
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      "@@@STEP_LOG_LINE@message@@@@",
      "@@@STEP_LOG_LINE@message@https://pigweed.googlesource.com/pigweed/pigweed@@@",
      "@@@STEP_LOG_LINE@message@proj Rolled-Commits: 000000000000000..444444444444444@@@",
      "@@@STEP_LOG_END@message@@@"
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    "cmd": [
      "[START_DIR]/cipd_tool/infra/tools/luci/gerrit/0e548aa33f8113a45a5b3b62201e114e98e63d00f97296912380138f44597b07/gerrit",
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      "-input",
      "{\"params\": {\"q\": \"email:email@example.com\"}}",
      "-output",
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    "infra_step": true,
    "name": "email@example.com",
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      "@@@STEP_LOG_LINE@json.output@  }@@@",
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      "@@@STEP_LOG_LINE@json.input@    \"q\": \"email:email@example.com\"@@@",
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    "cmd": [
      "[START_DIR]/cipd_tool/infra/tools/luci/gerrit/0e548aa33f8113a45a5b3b62201e114e98e63d00f97296912380138f44597b07/gerrit",
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  {
    "cmd": [],
    "name": "CCing"
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  {
    "cmd": [],
    "name": "CCing.cc user@example.com",
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  {
    "cmd": [
      "[START_DIR]/cipd_tool/infra/tools/luci/gerrit/0e548aa33f8113a45a5b3b62201e114e98e63d00f97296912380138f44597b07/gerrit",
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    "infra_step": true,
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    "cmd": [],
    "name": "not CCing, domain excluded"
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    "cmd": [],
    "name": "not CCing, domain excluded.cc user@example.com",
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    "cmd": [],
    "name": "not CCing, robot account"
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    "cmd": [],
    "name": "not CCing, robot account.cc robot@gserviceaccount.com",
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    "cmd": [],
    "name": "not CCing, no account in Gerrit"
  },
  {
    "cmd": [],
    "name": "not CCing, no account in Gerrit.cc nobody@google.com",
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    "cmd": [
      "[START_DIR]/cipd_tool/infra/tools/luci/gerrit/0e548aa33f8113a45a5b3b62201e114e98e63d00f97296912380138f44597b07/gerrit",
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    "infra_step": true,
    "name": "not CCing, no account in Gerrit.cc nobody@google.com.nobody@google.com",
    "timeout": 600,
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  },
  {
    "name": "$result"
  }
]