[
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    "cmd": [],
    "name": "Checkout flutter/engine"
  },
  {
    "cmd": [
      "python3",
      "-u",
      "RECIPE_MODULE[depot_tools::git]/resources/git_setup.py",
      "--path",
      "[START_DIR]/engine",
      "--url",
      "https://flutter.googlesource.com/mirrors/engine"
    ],
    "luci_context": {
      "realm": {
        "name": "proj:try"
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      "resultdb": {
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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/engine.git setup",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
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  {
    "cmd": [
      "git",
      "fetch",
      "origin",
      "--recurse-submodules",
      "--progress",
      "--tags"
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    "env": {
      "PATH": "RECIPE_REPO[depot_tools]:<PATH>"
    },
    "infra_step": true,
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        "name": "proj:try"
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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/engine.git fetch",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "git",
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      "-f",
      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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    "luci_context": {
      "realm": {
        "name": "proj:try"
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/engine.git checkout",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "rev-parse",
      "HEAD"
    ],
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    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/engine.read revision",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_TEXT@<br/>checked out 'deadbeef'<br/>@@@",
      "@@@SET_BUILD_PROPERTY@got_revision@\"deadbeef\"@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "clean",
      "-f",
      "-d",
      "-x"
    ],
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    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
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        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/engine.git clean",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "submodule",
      "sync"
    ],
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    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
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      "resultdb": {
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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/engine.submodule sync",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "submodule",
      "update",
      "--init",
      "--recursive"
    ],
    "cwd": "[START_DIR]/engine",
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
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      "resultdb": {
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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Checkout flutter/engine.submodule update",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "vpython3",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "copy",
      "[START_DIR]/engine/ci/builders/config_name.json",
      "/path/to/tmp/"
    ],
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Read build config file",
    "~followup_annotations": [
      "@@@STEP_LOG_LINE@config_name.json@{@@@",
      "@@@STEP_LOG_LINE@config_name.json@  \"archives\": [@@@",
      "@@@STEP_LOG_LINE@config_name.json@    {@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"destination\": \"bucket/c.txt\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"name\": \"c.txt\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"source\": \"/a/b/c.txt\"@@@",
      "@@@STEP_LOG_LINE@config_name.json@    }@@@",
      "@@@STEP_LOG_LINE@config_name.json@  ],@@@",
      "@@@STEP_LOG_LINE@config_name.json@  \"builds\": [@@@",
      "@@@STEP_LOG_LINE@config_name.json@    {@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"archives\": [@@@",
      "@@@STEP_LOG_LINE@config_name.json@        {@@@",
      "@@@STEP_LOG_LINE@config_name.json@          \"base_path\": \"out/host_debug/zip_archives/\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@          \"include_paths\": [@@@",
      "@@@STEP_LOG_LINE@config_name.json@            \"out/host_debug/zip_archives/darwin-x64/artifacts.zip\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@            \"out/host_debug/zip_archives/darwin-x64/FlutterEmbedder.framework.zip\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@            \"out/host_debug/zip_archives/dart-sdk-darwin-x64.zip\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@            \"out/host_debug/zip_archives/flutter-web-sdk-darwin-x64.zip\"@@@",
      "@@@STEP_LOG_LINE@config_name.json@          ],@@@",
      "@@@STEP_LOG_LINE@config_name.json@          \"name\": \"host_debug\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@          \"type\": \"gcs\"@@@",
      "@@@STEP_LOG_LINE@config_name.json@        }@@@",
      "@@@STEP_LOG_LINE@config_name.json@      ],@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"drone_dimensions\": [@@@",
      "@@@STEP_LOG_LINE@config_name.json@        \"os=Linux\"@@@",
      "@@@STEP_LOG_LINE@config_name.json@      ],@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"generators\": [@@@",
      "@@@STEP_LOG_LINE@config_name.json@        {@@@",
      "@@@STEP_LOG_LINE@config_name.json@          \"name\": \"generator1\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@          \"script\": \"script1.sh\"@@@",
      "@@@STEP_LOG_LINE@config_name.json@        }@@@",
      "@@@STEP_LOG_LINE@config_name.json@      ],@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"gn\": [@@@",
      "@@@STEP_LOG_LINE@config_name.json@        \"--ios\"@@@",
      "@@@STEP_LOG_LINE@config_name.json@      ],@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"name\": \"ios_debug\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@      \"ninja\": {@@@",
      "@@@STEP_LOG_LINE@config_name.json@        \"config\": \"ios_debug\",@@@",
      "@@@STEP_LOG_LINE@config_name.json@        \"targets\": []@@@",
      "@@@STEP_LOG_LINE@config_name.json@      }@@@",
      "@@@STEP_LOG_LINE@config_name.json@    }@@@",
      "@@@STEP_LOG_LINE@config_name.json@  ]@@@",
      "@@@STEP_LOG_LINE@config_name.json@}@@@",
      "@@@STEP_LOG_END@config_name.json@@@"
    ]
  },
  {
    "cmd": [],
    "name": "Identify branches"
  },
  {
    "cmd": [
      "git",
      "rev-parse",
      "HEAD"
    ],
    "cwd": "[START_DIR]/engine",
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Identify branches.git rev-parse",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "branch",
      "-a",
      "--contains",
      "12345abcde12345abcde12345abcde12345abcde"
    ],
    "cwd": "[START_DIR]/engine",
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    "luci_context": {
      "realm": {
        "name": "proj:try"
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "Identify branches.git branch",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [],
    "name": "launch builds"
  },
  {
    "cmd": [
      "bb",
      "batch",
      "-host",
      "cr-buildbucket.appspot.com"
    ],
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "launch builds.schedule",
    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Engine Drone\", \"project\": \"proj\"}, \"dimensions\": [{\"key\": \"os\", \"value\": \"Linux\"}], \"exe\": {\"cipdVersion\": \"refs/heads/main\"}, \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/engine\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/engine\", \"ref\": \"refs/heads/main\"}, \"priority\": 30, \"properties\": {\"build\": {\"archives\": [{\"base_path\": \"out/host_debug/zip_archives/\", \"include_paths\": [\"out/host_debug/zip_archives/darwin-x64/artifacts.zip\", \"out/host_debug/zip_archives/darwin-x64/FlutterEmbedder.framework.zip\", \"out/host_debug/zip_archives/dart-sdk-darwin-x64.zip\", \"out/host_debug/zip_archives/flutter-web-sdk-darwin-x64.zip\"], \"name\": \"host_debug\", \"type\": \"gcs\"}], \"drone_dimensions\": [\"os=Linux\"], \"generators\": [{\"name\": \"generator1\", \"script\": \"script1.sh\"}], \"gn\": [\"--ios\"], \"name\": \"ios_debug\", \"ninja\": {\"config\": \"ios_debug\", \"targets\": []}, \"recipe\": \"engine_v2/builder\"}, \"config_name\": \"config_name\", \"environment\": \"Staging\", \"gclient_variables\": {}, \"recipe\": \"engine_v2/builder\"}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
      "@@@STEP_LOG_LINE@json.output@    {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"scheduleBuild\": {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"builder\": {@@@",
      "@@@STEP_LOG_LINE@json.output@          \"bucket\": \"try\",@@@",
      "@@@STEP_LOG_LINE@json.output@          \"builder\": \"builder-subbuild1\",@@@",
      "@@@STEP_LOG_LINE@json.output@          \"project\": \"fuchsia\"@@@",
      "@@@STEP_LOG_LINE@json.output@        },@@@",
      "@@@STEP_LOG_LINE@json.output@        \"id\": \"8945511751514863186\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }@@@",
      "@@@STEP_LOG_LINE@json.output@    }@@@",
      "@@@STEP_LOG_LINE@json.output@  ]@@@",
      "@@@STEP_LOG_LINE@json.output@}@@@",
      "@@@STEP_LOG_END@json.output@@@",
      "@@@STEP_LOG_LINE@request@{@@@",
      "@@@STEP_LOG_LINE@request@  \"requests\": [@@@",
      "@@@STEP_LOG_LINE@request@    {@@@",
      "@@@STEP_LOG_LINE@request@      \"scheduleBuild\": {@@@",
      "@@@STEP_LOG_LINE@request@        \"builder\": {@@@",
      "@@@STEP_LOG_LINE@request@          \"bucket\": \"try\",@@@",
      "@@@STEP_LOG_LINE@request@          \"builder\": \"Linux Engine Drone\",@@@",
      "@@@STEP_LOG_LINE@request@          \"project\": \"proj\"@@@",
      "@@@STEP_LOG_LINE@request@        },@@@",
      "@@@STEP_LOG_LINE@request@        \"dimensions\": [@@@",
      "@@@STEP_LOG_LINE@request@          {@@@",
      "@@@STEP_LOG_LINE@request@            \"key\": \"os\",@@@",
      "@@@STEP_LOG_LINE@request@            \"value\": \"Linux\"@@@",
      "@@@STEP_LOG_LINE@request@          }@@@",
      "@@@STEP_LOG_LINE@request@        ],@@@",
      "@@@STEP_LOG_LINE@request@        \"exe\": {@@@",
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      "@@@STEP_LOG_LINE@request@        },@@@",
      "@@@STEP_LOG_LINE@request@        \"experimental\": \"NO\",@@@",
      "@@@STEP_LOG_LINE@request@        \"experiments\": {@@@",
      "@@@STEP_LOG_LINE@request@          \"luci.buildbucket.parent_tracking\": false@@@",
      "@@@STEP_LOG_LINE@request@        },@@@",
      "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\",@@@",
      "@@@STEP_LOG_LINE@request@        \"gerritChanges\": [@@@",
      "@@@STEP_LOG_LINE@request@          {@@@",
      "@@@STEP_LOG_LINE@request@            \"change\": \"123456\",@@@",
      "@@@STEP_LOG_LINE@request@            \"host\": \"flutter-review.googlesource.com\",@@@",
      "@@@STEP_LOG_LINE@request@            \"patchset\": \"7\",@@@",
      "@@@STEP_LOG_LINE@request@            \"project\": \"mirrors/engine\"@@@",
      "@@@STEP_LOG_LINE@request@          }@@@",
      "@@@STEP_LOG_LINE@request@        ],@@@",
      "@@@STEP_LOG_LINE@request@        \"gitilesCommit\": {@@@",
      "@@@STEP_LOG_LINE@request@          \"host\": \"flutter.googlesource.com\",@@@",
      "@@@STEP_LOG_LINE@request@          \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",@@@",
      "@@@STEP_LOG_LINE@request@          \"project\": \"mirrors/engine\",@@@",
      "@@@STEP_LOG_LINE@request@          \"ref\": \"refs/heads/main\"@@@",
      "@@@STEP_LOG_LINE@request@        },@@@",
      "@@@STEP_LOG_LINE@request@        \"priority\": 30,@@@",
      "@@@STEP_LOG_LINE@request@        \"properties\": {@@@",
      "@@@STEP_LOG_LINE@request@          \"build\": {@@@",
      "@@@STEP_LOG_LINE@request@            \"archives\": [@@@",
      "@@@STEP_LOG_LINE@request@              {@@@",
      "@@@STEP_LOG_LINE@request@                \"base_path\": \"out/host_debug/zip_archives/\",@@@",
      "@@@STEP_LOG_LINE@request@                \"include_paths\": [@@@",
      "@@@STEP_LOG_LINE@request@                  \"out/host_debug/zip_archives/darwin-x64/artifacts.zip\",@@@",
      "@@@STEP_LOG_LINE@request@                  \"out/host_debug/zip_archives/darwin-x64/FlutterEmbedder.framework.zip\",@@@",
      "@@@STEP_LOG_LINE@request@                  \"out/host_debug/zip_archives/dart-sdk-darwin-x64.zip\",@@@",
      "@@@STEP_LOG_LINE@request@                  \"out/host_debug/zip_archives/flutter-web-sdk-darwin-x64.zip\"@@@",
      "@@@STEP_LOG_LINE@request@                ],@@@",
      "@@@STEP_LOG_LINE@request@                \"name\": \"host_debug\",@@@",
      "@@@STEP_LOG_LINE@request@                \"type\": \"gcs\"@@@",
      "@@@STEP_LOG_LINE@request@              }@@@",
      "@@@STEP_LOG_LINE@request@            ],@@@",
      "@@@STEP_LOG_LINE@request@            \"drone_dimensions\": [@@@",
      "@@@STEP_LOG_LINE@request@              \"os=Linux\"@@@",
      "@@@STEP_LOG_LINE@request@            ],@@@",
      "@@@STEP_LOG_LINE@request@            \"generators\": [@@@",
      "@@@STEP_LOG_LINE@request@              {@@@",
      "@@@STEP_LOG_LINE@request@                \"name\": \"generator1\",@@@",
      "@@@STEP_LOG_LINE@request@                \"script\": \"script1.sh\"@@@",
      "@@@STEP_LOG_LINE@request@              }@@@",
      "@@@STEP_LOG_LINE@request@            ],@@@",
      "@@@STEP_LOG_LINE@request@            \"gn\": [@@@",
      "@@@STEP_LOG_LINE@request@              \"--ios\"@@@",
      "@@@STEP_LOG_LINE@request@            ],@@@",
      "@@@STEP_LOG_LINE@request@            \"name\": \"ios_debug\",@@@",
      "@@@STEP_LOG_LINE@request@            \"ninja\": {@@@",
      "@@@STEP_LOG_LINE@request@              \"config\": \"ios_debug\",@@@",
      "@@@STEP_LOG_LINE@request@              \"targets\": []@@@",
      "@@@STEP_LOG_LINE@request@            },@@@",
      "@@@STEP_LOG_LINE@request@            \"recipe\": \"engine_v2/builder\"@@@",
      "@@@STEP_LOG_LINE@request@          },@@@",
      "@@@STEP_LOG_LINE@request@          \"config_name\": \"config_name\",@@@",
      "@@@STEP_LOG_LINE@request@          \"environment\": \"Staging\",@@@",
      "@@@STEP_LOG_LINE@request@          \"gclient_variables\": {},@@@",
      "@@@STEP_LOG_LINE@request@          \"recipe\": \"engine_v2/builder\"@@@",
      "@@@STEP_LOG_LINE@request@        },@@@",
      "@@@STEP_LOG_LINE@request@        \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\",@@@",
      "@@@STEP_LOG_LINE@request@        \"swarming\": {@@@",
      "@@@STEP_LOG_LINE@request@          \"parentRunId\": \"fake-task-id\"@@@",
      "@@@STEP_LOG_LINE@request@        },@@@",
      "@@@STEP_LOG_LINE@request@        \"tags\": [@@@",
      "@@@STEP_LOG_LINE@request@          {@@@",
      "@@@STEP_LOG_LINE@request@            \"key\": \"cq_experimental\",@@@",
      "@@@STEP_LOG_LINE@request@            \"value\": \"false\"@@@",
      "@@@STEP_LOG_LINE@request@          },@@@",
      "@@@STEP_LOG_LINE@request@          {@@@",
      "@@@STEP_LOG_LINE@request@            \"key\": \"parent_buildbucket_id\",@@@",
      "@@@STEP_LOG_LINE@request@            \"value\": \"8945511751514863184\"@@@",
      "@@@STEP_LOG_LINE@request@          },@@@",
      "@@@STEP_LOG_LINE@request@          {@@@",
      "@@@STEP_LOG_LINE@request@            \"key\": \"user_agent\",@@@",
      "@@@STEP_LOG_LINE@request@            \"value\": \"recipe\"@@@",
      "@@@STEP_LOG_LINE@request@          }@@@",
      "@@@STEP_LOG_LINE@request@        ]@@@",
      "@@@STEP_LOG_LINE@request@      }@@@",
      "@@@STEP_LOG_LINE@request@    }@@@",
      "@@@STEP_LOG_LINE@request@  ]@@@",
      "@@@STEP_LOG_LINE@request@}@@@",
      "@@@STEP_LOG_END@request@@@",
      "@@@STEP_LINK@8945511751514863186@https://cr-buildbucket.appspot.com/build/8945511751514863186@@@"
    ]
  },
  {
    "cmd": [],
    "name": "collect builds"
  },
  {
    "cmd": [],
    "name": "collect builds.collect",
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      "@@@STEP_NEST_LEVEL@1@@@"
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  {
    "cmd": [
      "bb",
      "collect",
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      "cr-buildbucket.appspot.com",
      "-interval",
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      "8945511751514863186"
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    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "proj:try"
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "collect builds.collect.wait",
    "timeout": 86400,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@2@@@"
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  {
    "cmd": [
      "bb",
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      "-host",
      "cr-buildbucket.appspot.com"
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      "resultdb": {
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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "collect builds.collect.get",
    "stdin": "{\"requests\": [{\"getBuild\": {\"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,summaryMarkdown,updateTime\", \"id\": \"8945511751514863186\"}}]}",
    "~followup_annotations": [
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