V8: Make sure infra failures fail overall build

scripts/slave/recipes/v8.expected/full_client_v8_V8_Linux_swarming_collect_failure.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::git]/resources/git_setup.py",
       "--path",
       "[SLAVE_BUILD]/swarming.client",
       "--url",
       "https://chromium.googlesource.com/external/swarming.client.git"
@@ skipping 2662 matching lines @@
       "collect",
       "--swarming",
       "https://chromium-swarm.appspot.com",
       "--decorate",
       "--print-status-updates",
       "--json",
       "{\"base_task_name\": \"Check/Ubuntu-12.04/[dummy has/V8 Linux/571\", \"tasks\": {\"Check/Ubuntu-12.04/[dummy has/V8 Linux/571\": {\"shard_index\": 0, \"task_id\": \"10000\", \"view_url\": \"https://chromium-swarm.appspot.com/user/task/10000\"}}}"
     ],
     "name": "Check",
     "~followup_annotations": [
+      "step returned non-zero exit code: 1",
       "@@@STEP_LOG_LINE@durations@01:01:002 mjsunit/Cool.Test@@@",
       "@@@STEP_LOG_LINE@durations@00:00:101 mjsunit/Cool.Test2@@@",
       "@@@STEP_LOG_LINE@durations@@@@",
       "@@@STEP_LOG_LINE@durations@Details:@@@",
       "@@@STEP_LOG_LINE@durations@@@@",
       "@@@STEP_LOG_LINE@durations@Test: mjsunit/Cool.Test@@@",
       "@@@STEP_LOG_LINE@durations@Flags: -f@@@",
       "@@@STEP_LOG_LINE@durations@Command: d8 -f mjsunit/Cool.Test@@@",
       "@@@STEP_LOG_LINE@durations@Duration: 01:01:002@@@",
       "@@@STEP_LOG_LINE@durations@Test: mjsunit/Cool.Test2@@@",
       "@@@STEP_LOG_LINE@durations@Flags: -f -g@@@",
       "@@@STEP_LOG_LINE@durations@Command: d8 -f mjsunit/Cool.Test2@@@",
       "@@@STEP_LOG_LINE@durations@Duration: 00:00:101@@@",
-      "@@@STEP_LOG_END@durations@@@"
+      "@@@STEP_LOG_END@durations@@@",
+      "@@@STEP_EXCEPTION@@@"
     ]
   },
   {
     "allow_subannotations": true,
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::v8]/resources/collect_v8_task.py",
       "--swarming-client-dir",
       "[SLAVE_BUILD]/swarming.client",
@@ skipping 1039 matching lines @@
       "@@@STEP_LOG_LINE@durations@Duration: 01:01:002@@@",
       "@@@STEP_LOG_LINE@durations@Test: mjsunit/Cool.Test2@@@",
       "@@@STEP_LOG_LINE@durations@Flags: -f -g@@@",
       "@@@STEP_LOG_LINE@durations@Command: d8 -f mjsunit/Cool.Test2@@@",
       "@@@STEP_LOG_LINE@durations@Duration: 00:00:101@@@",
       "@@@STEP_LOG_END@durations@@@"
     ]
   },
   {
     "name": "$result",
+    "reason": "Failures or flakes in build.",
     "recipe_result": null,
-    "status_code": 0
+    "status_code": 1
   }
 ]