Make bisect not break when buildbucket.get fails.

scripts/slave/recipe_modules/auto_bisect_staging/test_api.py

Index: scripts/slave/recipe_modules/auto_bisect_staging/test_api.py
diff --git a/scripts/slave/recipe_modules/auto_bisect_staging/test_api.py b/scripts/slave/recipe_modules/auto_bisect_staging/test_api.py
index 3b3d49a6dffcf6c65aa55ef0370722ce0f491b6b..034a769175ac8fe4f6ec0a2230a4aca5b90fc241 100644
--- a/scripts/slave/recipe_modules/auto_bisect_staging/test_api.py
+++ b/scripts/slave/recipe_modules/auto_bisect_staging/test_api.py
@@ -188,7 +188,12 @@ index 029be3b..2b3ea0a 100644
       if 'build_status' in item:
         result[item['hash']] = []
         for entry in item['build_status']:
-          result[item['hash']].append(self.m.json.output_stream(entry))
+          if type(entry) == type(dict()):
+            result[item['hash']].append(self.m.json.output_stream(entry))
+          else:
+            result[item['hash']].append(
+                self.m.json.output(entry, retcode=1) +
+                self.m.json.output_stream(entry, retcode=1))
     return result
 
   def __call__(self, config_items):