Use buildbucket to assess build failure.

scripts/slave/recipe_modules/auto_bisect/example.expected/failed_build_test.json

Index: scripts/slave/recipe_modules/auto_bisect/example.expected/failed_build_test.json
diff --git a/scripts/slave/recipe_modules/auto_bisect/example.expected/failed_build_test.json b/scripts/slave/recipe_modules/auto_bisect/example.expected/failed_build_test.json
index b1f84e181c4870aefca5bf888b10970d11e63723..eed3fc5b860a0d7ac7ec72691a314c5c8f27ddec 100644
--- a/scripts/slave/recipe_modules/auto_bisect/example.expected/failed_build_test.json
+++ b/scripts/slave/recipe_modules/auto_bisect/example.expected/failed_build_test.json
@@ -178,8 +178,16 @@
     "name": "buildbucket.put",
     "stdout": "/path/to/tmp/json",
     "~followup_annotations": [
-      "@@@STEP_LOG_LINE@json.output (invalid)@null@@@",
-      "@@@STEP_LOG_END@json.output (invalid)@@@"
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"results\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"build\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"id\": \"1201331270\"@@@",
+      "@@@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@@@"
     ]
   },
   {
@@ -211,8 +219,16 @@
     "name": "buildbucket.put (2)",
     "stdout": "/path/to/tmp/json",
     "~followup_annotations": [
-      "@@@STEP_LOG_LINE@json.output (invalid)@null@@@",
-      "@@@STEP_LOG_END@json.output (invalid)@@@"
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"results\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"build\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"id\": \"1201331270\"@@@",
+      "@@@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@@@"
     ]
   },
   {
@@ -233,25 +249,27 @@
   },
   {
     "cmd": [
-      "python",
-      "-u",
-      "RECIPE_PACKAGE_REPO[build]/scripts/tools/pycurl.py",
-      "https://build.chromium.org/p/tryserver.chromium.perfjson/builders/linux_perf_bisect_builder?as_text=1",
-      "--outfile",
-      "/path/to/tmp/"
-    ],
-    "name": "fetch builder state"
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "RECIPE_PACKAGE_REPO[build]/scripts/tools/pycurl.py",
-      "https://build.chromium.org/p/tryserver.chromium.perfjson/builders/linux_perf_bisect_builder/builds/2106?as_text=1",
-      "--outfile",
-      "/path/to/tmp/"
+      "/opt/infra-tools/buildbucket",
+      "get",
+      "--host",
+      "cr-buildbucket.appspot.com",
+      "1201331270"
     ],
-    "name": "fetch build details"
+    "name": "buildbucket.get",
+    "stdout": "/path/to/tmp/json",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"results\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"build\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"result\": \"FAILED\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"status\": \"COMPLETED\"@@@",
+      "@@@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": [