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      "describe",
      "pigweed/host_tools/linux-amd64",
      "-version",
      "latest",
      "-json-output",
      "/path/to/tmp/json"
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    "luci_context": {
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      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "cipd describe pigweed/host_tools/linux-amd64",
    "~followup_annotations": [
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
      "@@@STEP_LOG_LINE@json.output@    \"pin\": {@@@",
      "@@@STEP_LOG_LINE@json.output@      \"instance_id\": \"resolved-instance_id-of-latest----------\", @@@",
      "@@@STEP_LOG_LINE@json.output@      \"package\": \"pigweed/host_tools/linux-amd64\"@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"refs\": [@@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-latest----------\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"modified_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"modified_ts\": 1446574210, @@@",
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      "@@@STEP_LOG_LINE@json.output@      }@@@",
      "@@@STEP_LOG_LINE@json.output@    ], @@@",
      "@@@STEP_LOG_LINE@json.output@    \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"registered_ts\": 1446574210, @@@",
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      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"buildbot_build:some.waterfall/builder/1234\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"git_repository:https://chromium.googlesource.com/some/repo\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"git_revision:397a2597cdc237f3026e6143b683be4b9ab60540\"@@@",
      "@@@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@@@"
    ]
  },
  {
    "cmd": [
      "cipd",
      "describe",
      "pigweed/host_tools/windows-amd64",
      "-version",
      "latest",
      "-json-output",
      "/path/to/tmp/json"
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    "luci_context": {
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          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "cipd describe pigweed/host_tools/windows-amd64",
    "~followup_annotations": [
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
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      "@@@STEP_LOG_LINE@json.output@      \"instance_id\": \"resolved-instance_id-of-latest----------\", @@@",
      "@@@STEP_LOG_LINE@json.output@      \"package\": \"pigweed/host_tools/windows-amd64\"@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"refs\": [@@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-latest----------\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"modified_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"modified_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"ref\": \"latest\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }@@@",
      "@@@STEP_LOG_LINE@json.output@    ], @@@",
      "@@@STEP_LOG_LINE@json.output@    \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@    \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"tags\": [@@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"buildbot_build:some.waterfall/builder/1234\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"git_repository:https://chromium.googlesource.com/some/repo\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"git_revision:397a2597cdc237f3026e6143b683be4b9ab60540\"@@@",
      "@@@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@@@"
    ]
  },
  {
    "cmd": [],
    "name": "common tags",
    "~followup_annotations": [
      "@@@STEP_SUMMARY_TEXT@git_revision:397a2597cdc237f3026e6143b683be4b9ab60540@@@"
    ]
  },
  {
    "cmd": [],
    "name": "check number of instances"
  },
  {
    "cmd": [
      "cipd",
      "describe",
      "pigweed/host_tools/linux-amd64",
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      "git_revision:397a2597cdc237f3026e6143b683be4b9ab60540",
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          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "check number of instances.cipd describe pigweed/host_tools/linux-amd64",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
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      "@@@STEP_LOG_LINE@json.output@      \"package\": \"pigweed/host_tools/linux-amd64\"@@@",
      "@@@STEP_LOG_LINE@json.output@    }, @@@",
      "@@@STEP_LOG_LINE@json.output@    \"refs\": [@@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
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      "@@@STEP_LOG_LINE@json.output@        \"modified_ts\": 1446574210, @@@",
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      "@@@STEP_LOG_LINE@json.output@    \"registered_ts\": 1446574210, @@@",
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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@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"git_repository:https://chromium.googlesource.com/some/repo\"@@@",
      "@@@STEP_LOG_LINE@json.output@      }, @@@",
      "@@@STEP_LOG_LINE@json.output@      {@@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_by\": \"user:44-blablbla@developer.gserviceaccount.com\", @@@",
      "@@@STEP_LOG_LINE@json.output@        \"registered_ts\": 1446574210, @@@",
      "@@@STEP_LOG_LINE@json.output@        \"tag\": \"git_revision:397a2597cdc237f3026e6143b683be4b9ab60540\"@@@",
      "@@@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@@@"
    ]
  },
  {
    "cmd": [
      "cipd",
      "describe",
      "pigweed/host_tools/windows-amd64",
      "-version",
      "git_revision:397a2597cdc237f3026e6143b683be4b9ab60540",
      "-json-output",
      "/path/to/tmp/json"
    ],
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          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "check number of instances.cipd describe pigweed/host_tools/windows-amd64",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
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      "@@@STEP_LOG_LINE@json.output@  }@@@",
      "@@@STEP_LOG_LINE@json.output@}@@@",
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    "cmd": [],
    "name": "new_version",
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  },
  {
    "cmd": [
      "vpython",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "copy",
      "{\n  \"packages\": [\n    {\n      \"_comment\": \"comments should be preserved\",\n      \"path\": \"pigweed/host_tools/${platform}\",\n      \"platforms\": [\n        \"linux-amd64\",\n        \"windows-amd64\"\n      ],\n      \"tags\": [\n        \"git_revision:397a2597cdc237f3026e6143b683be4b9ab60540\"\n      ]\n    }\n  ]\n}\n",
      "[START_DIR]/checkout/pw_env_setup/py/pw_env_setup/cipd_setup/pigweed.json"
    ],
    "infra_step": true,
    "luci_context": {
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    "name": "write pigweed.json",
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      "@@@STEP_LOG_LINE@pigweed.json@      \"_comment\": \"comments should be preserved\",@@@",
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      "@@@STEP_LOG_LINE@pigweed.json@        \"linux-amd64\",@@@",
      "@@@STEP_LOG_LINE@pigweed.json@        \"windows-amd64\"@@@",
      "@@@STEP_LOG_LINE@pigweed.json@      ],@@@",
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      "@@@STEP_LOG_LINE@pigweed.json@}@@@",
      "@@@STEP_LOG_END@pigweed.json@@@"
    ]
  },
  {
    "cmd": [
      "git",
      "ls-files",
      "--modified",
      "--deleted",
      "--exclude-standard"
    ],
    "cwd": "[START_DIR]/checkout/pw_env_setup/py/pw_env_setup/cipd_setup",
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    "name": "check for no-op commit",
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      "--update"
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    "cwd": "[START_DIR]/checkout/pw_env_setup/py/pw_env_setup/cipd_setup",
    "infra_step": true,
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    "name": "git add",
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  {
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    "cwd": "[START_DIR]/checkout/pw_env_setup/py/pw_env_setup/cipd_setup",
    "infra_step": true,
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    "name": "git rev-parse",
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  {
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  },
  {
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    },
    "name": "calculate Change-Id.git diff",
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      "@@@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@@@",
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      "@@@STEP_LOG_LINE@diff (without hashes)@@@ -5 +5 @@@@@",
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      "@@@STEP_LOG_LINE@diff (without hashes)@@@@",
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    ]
  },
  {
    "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####dry-run####"
    ],
    "cwd": "[START_DIR]/checkout/pw_env_setup/py/pw_env_setup/cipd_setup",
    "infra_step": true,
    "luci_context": {
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    },
    "name": "calculate Change-Id.git hash-object",
    "timeout": 60.0,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@"
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  },
  {
    "cmd": [],
    "name": "ensure gerrit"
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  {
    "cmd": [
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      "--json-output",
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