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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
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        "hostname": "rdbhost"
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    "name": "checkout foo.apply foo:1234.git rev-parse",
    "timeout": 60.0,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@2@@@"
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    "cmd": [
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        "hostname": "rdbhost"
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    "name": "checkout foo.apply foo:1234.git submodule update",
    "timeout": 600,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@2@@@"
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  {
    "cmd": [
      "python3",
      "RECIPE_MODULE[pigweed::checkout]/resources/submodule_status.py",
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      "/path/to/tmp/json",
      "--recursive"
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    "cwd": "[START_DIR]/project",
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        "hostname": "rdbhost"
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    "~followup_annotations": [
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      "@@@STEP_LOG_LINE@json.output@{}@@@",
      "@@@STEP_LOG_END@json.output@@@"
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    "cmd": [],
    "name": "checkout foo.status",
    "~followup_annotations": [
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      "@@@STEP_SUMMARY_TEXT@applied [Change(number=1234, remote='https://foo.googlesource.com/foo', ref='2d72510e447ab60a9728aeea2362d8be2cbd7789', rebase=False, branch='main', gerrit_name='foo', submitted=True, base='HEAD_HEAD_HEAD_HEAD_HEAD_HEAD_HEAD_HEAD_', base_type='submitted_commit_hash', is_merge=False, commit_message='')]\nnot applied []@@@"
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  {
    "cmd": [],
    "name": "checkout foo.git log",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "name": "checkout foo.git log.[START_DIR]/project",
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@2@@@"
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    "cmd": [],
    "name": "checkout foo.base",
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      "@@@SET_BUILD_PROPERTY@got_revision_type@\"submitted_commit_hash\"@@@"
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    "cmd": [
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      "--mode",
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    "infra_step": true,
    "luci_context": {
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        "hostname": "rdbhost"
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    "name": "checkout foo.mkdir",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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          "update_token": "token"
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    "name": "checkout foo.submodule-status",
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "cmd": [
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      "copy",
      "submodule status filler text",
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    "infra_step": true,
    "luci_context": {
      "realm": {
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          "update_token": "token"
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    "name": "checkout foo.write submodule snapshot",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@submodules.log@submodule status filler text@@@",
      "@@@STEP_LOG_END@submodules.log@@@"
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    "cmd": [
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    "name": "checkout foo.log",
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      "copy",
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      "[START_DIR]/snapshot/git.log"
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    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
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        "hostname": "rdbhost"
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    "name": "checkout foo.write git log",
    "~followup_annotations": [
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      "@@@STEP_LOG_END@git.log@@@"
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    "cmd": [
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      "copy",
      "[START_DIR]/co/foo.txt",
      "/path/to/tmp/"
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    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
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        "hostname": "rdbhost"
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    "name": "read old revision",
    "~followup_annotations": [
      "@@@STEP_LOG_LINE@foo.txt@1111111111111111111111111111111111111111@@@",
      "@@@STEP_LOG_END@foo.txt@@@"
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    "cmd": [
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      "copy",
      "2d72510e447ab60a9728aeea2362d8be2cbd7789\n",
      "[START_DIR]/co/foo.txt"
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    "infra_step": true,
    "luci_context": {
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        "hostname": "rdbhost"
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    "name": "write new revision",
    "~followup_annotations": [
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      "@@@STEP_LOG_END@foo.txt@@@"
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  {
    "cmd": [],
    "name": "get roll direction",
    "~followup_annotations": [
      "@@@STEP_SUMMARY_TEXT@forward@@@"
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  {
    "cmd": [
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      "1111111111111111111111111111111111111111",
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        "hostname": "rdbhost"
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    "name": "get roll direction.is forward",
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "cmd": [
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    "name": "get roll direction.is backward",
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "cmd": [],
    "name": "txt_path",
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    "cmd": [],
    "name": "remote"
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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    "name": "remote.url",
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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  {
    "cmd": [],
    "name": "foo.txt"
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  {
    "cmd": [
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    "~followup_annotations": [
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    "cmd": [
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      "{\"params\": {\"q\": \"commit:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"}}",
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          "update_token": "token"
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        "hostname": "rdbhost"
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    "name": "foo.txt.get change-id",
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@json.output@[@@@",
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      "@@@STEP_LOG_LINE@json.output@  }@@@",
      "@@@STEP_LOG_LINE@json.output@]@@@",
      "@@@STEP_LOG_END@json.output@@@",
      "@@@STEP_LOG_LINE@json.input@{@@@",
      "@@@STEP_LOG_LINE@json.input@  \"params\": {@@@",
      "@@@STEP_LOG_LINE@json.input@    \"q\": \"commit:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"@@@",
      "@@@STEP_LOG_LINE@json.input@  }@@@",
      "@@@STEP_LOG_LINE@json.input@}@@@",
      "@@@STEP_LOG_END@json.input@@@"
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      "@@@STEP_LOG_LINE@json.output@    \"email\": \"author@example.com\", @@@",
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      "@@@STEP_LOG_LINE@json.output@  \"reviewers\": {@@@",
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      "@@@STEP_LOG_LINE@json.output@      {@@@",
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      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"email\": \"nobody@google.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"name\": \"nobody\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"email\": \"robot@gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"name\": \"robot\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }@@@",
      "@@@STEP_LOG_LINE@json.output@    ]@@@",
      "@@@STEP_LOG_LINE@json.output@  }@@@",
      "@@@STEP_LOG_LINE@json.output@}@@@",
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      "@@@STEP_LOG_END@json.input@@@",
      "@@@STEP_LINK@gerrit link@https://pigweed-review.googlesource.com/q/12345@@@"
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    "cmd": [],
    "name": "roll message"
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    "cmd": [],
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      "@@@STEP_LOG_LINE@template@{project_name} Rolled-Commits: {old_revision:.15}..{new_revision:.15}@@@",
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      "@@@STEP_LOG_LINE@kwargs@'old_revision': '1111111111111111111111111111111111111111'@@@",
      "@@@STEP_LOG_LINE@kwargs@'original_message': 'foo\\nbar\\n\\nChange-Id: I1111'@@@",
      "@@@STEP_LOG_LINE@kwargs@'project_name': 'foo.txt'@@@",
      "@@@STEP_LOG_LINE@kwargs@'remote': 'https://pigweed.googlesource.com/pigweed/pigweed'@@@",
      "@@@STEP_LOG_LINE@kwargs@'sanitized_message': 'foo\\nbar\\n'@@@",
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      "@@@STEP_LOG_LINE@message@bar@@@",
      "@@@STEP_LOG_LINE@message@@@@",
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      "@@@STEP_LOG_LINE@message@foo.txt Rolled-Commits: 111111111111111..2d72510e447ab60@@@",
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    "cmd": [
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    "name": "git rev-parse",
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  {
    "cmd": [],
    "name": "calculate Change-Id",
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  {
    "cmd": [
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        "hostname": "rdbhost"
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    "name": "calculate Change-Id.git diff",
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    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@diff --git a/foo.txt b/foo.txt@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@--- a/foo.txt@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@+++ b/foo.txt@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@@@ -16 +16 @@@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@-        foo = 5@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@+        foo = 6@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@diff --git a/bar.txt b/bar.txt@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@--- a/bar.txt@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@+++ b/bar.txt@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@@@ -5 +5 @@@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@-        bar = 0@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@+        bar = 1@@@",
      "@@@STEP_LOG_LINE@diff (without hashes)@@@@",
      "@@@STEP_LOG_END@diff (without hashes)@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "hash-object",
      "diff --git a/foo.txt b/foo.txt\n--- a/foo.txt\n+++ b/foo.txt\n@@ -16 +16 @@\n-        foo = 5\n+        foo = 6\ndiff --git a/bar.txt b/bar.txt\n--- a/bar.txt\n+++ b/bar.txt\n@@ -5 +5 @@\n-        bar = 0\n+        bar = 1\n####builder########"
    ],
    "cwd": "[START_DIR]/co",
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "calculate Change-Id.git hash-object",
    "timeout": 60.0,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
    ]
  },
  {
    "cmd": [
      "[START_DIR]/cipd_tool/path/to/gerrit/version%3Apinned-version/gerrit",
      "change-query",
      "-host",
      "https://pigweed-review.googlesource.com",
      "-input",
      "{\"params\": {\"o\": [\"CURRENT_COMMIT\", \"CURRENT_REVISION\", \"MESSAGES\"], \"q\": \"change:pigweed/pigweed~main~I28135185e8ac8c69d0b894c4be54ddbb0ea69d5c\"}}",
      "-output",
      "/path/to/tmp/json"
    ],
    "cwd": "[START_DIR]/co",
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "check for identical roll",
    "timeout": 600,
    "~followup_annotations": [
      "@@@STEP_LOG_LINE@json.output@null@@@",
      "@@@STEP_LOG_END@json.output@@@",
      "@@@STEP_LOG_LINE@json.input@{@@@",
      "@@@STEP_LOG_LINE@json.input@  \"params\": {@@@",
      "@@@STEP_LOG_LINE@json.input@    \"o\": [@@@",
      "@@@STEP_LOG_LINE@json.input@      \"CURRENT_COMMIT\", @@@",
      "@@@STEP_LOG_LINE@json.input@      \"CURRENT_REVISION\", @@@",
      "@@@STEP_LOG_LINE@json.input@      \"MESSAGES\"@@@",
      "@@@STEP_LOG_LINE@json.input@    ], @@@",
      "@@@STEP_LOG_LINE@json.input@    \"q\": \"change:pigweed/pigweed~main~I28135185e8ac8c69d0b894c4be54ddbb0ea69d5c\"@@@",
      "@@@STEP_LOG_LINE@json.input@  }@@@",
      "@@@STEP_LOG_LINE@json.input@}@@@",
      "@@@STEP_LOG_END@json.input@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "commit",
      "-m",
      "[roll foo.txt] foo\nbar\n\n\nhttps://pigweed.googlesource.com/pigweed/pigweed\nfoo.txt Rolled-Commits: 111111111111111..2d72510e447ab60\n--divider--\nRoller-URL: https://ci.chromium.org/b/8945511751514863184\nCQ-Do-Not-Cancel-Tryjobs: true\nChange-Id: I28135185e8ac8c69d0b894c4be54ddbb0ea69d5c",
      "-a",
      "--author",
      "author <author@pigweed.infra.roller.example.com>"
    ],
    "cwd": "[START_DIR]/co",
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "git commit",
    "timeout": 600.0
  },
  {
    "cmd": [
      "git",
      "push",
      "--push-option",
      "nokeycheck",
      "origin",
      "HEAD:refs/for/main%l=Commit-Queue+2"
    ],
    "cwd": "[START_DIR]/co",
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "git push",
    "timeout": 180.0,
    "~followup_annotations": [
      "@@@STEP_LOG_LINE@stdout@@@@",
      "@@@STEP_LOG_END@stdout@@@",
      "@@@STEP_LINK@gerrit link@https://pigweed-review.googlesource.com/q/pigweed/pigweed~main~I28135185e8ac8c69d0b894c4be54ddbb0ea69d5c@@@"
    ]
  },
  {
    "cmd": [],
    "name": "check for completion"
  },
  {
    "cmd": [
      "[START_DIR]/cipd_tool/path/to/gerrit/version%3Apinned-version/gerrit",
      "change-detail",
      "-host",
      "https://pigweed-review.googlesource.com",
      "-input",
      "{\"change_id\": \"pigweed/pigweed~main~I28135185e8ac8c69d0b894c4be54ddbb0ea69d5c\", \"params\": {\"o\": [\"CURRENT_REVISION\"]}}",
      "-output",
      "/path/to/tmp/json"
    ],
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "check for completion.check if done (0)",
    "timeout": 600,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"current_revision\": \"abc123\", @@@",
      "@@@STEP_LOG_LINE@json.output@  \"labels\": {@@@",
      "@@@STEP_LOG_LINE@json.output@    \"Commit-Queue\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"approved\": {}@@@",
      "@@@STEP_LOG_LINE@json.output@    }@@@",
      "@@@STEP_LOG_LINE@json.output@  }, @@@",
      "@@@STEP_LOG_LINE@json.output@  \"status\": \"MERGED\"@@@",
      "@@@STEP_LOG_LINE@json.output@}@@@",
      "@@@STEP_LOG_END@json.output@@@",
      "@@@STEP_LOG_LINE@json.input@{@@@",
      "@@@STEP_LOG_LINE@json.input@  \"change_id\": \"pigweed/pigweed~main~I28135185e8ac8c69d0b894c4be54ddbb0ea69d5c\", @@@",
      "@@@STEP_LOG_LINE@json.input@  \"params\": {@@@",
      "@@@STEP_LOG_LINE@json.input@    \"o\": [@@@",
      "@@@STEP_LOG_LINE@json.input@      \"CURRENT_REVISION\"@@@",
      "@@@STEP_LOG_LINE@json.input@    ]@@@",
      "@@@STEP_LOG_LINE@json.input@  }@@@",
      "@@@STEP_LOG_LINE@json.input@}@@@",
      "@@@STEP_LOG_END@json.input@@@",
      "@@@STEP_LINK@gerrit link@https://pigweed-review.googlesource.com/q/pigweed/pigweed~main~I28135185e8ac8c69d0b894c4be54ddbb0ea69d5c@@@"
    ]
  },
  {
    "name": "$result"
  }
]