tools/android/loading Add timestamps to backend logs.

tools/android/loading/cloud/backend/worker.py

Index: tools/android/loading/cloud/backend/worker.py
diff --git a/tools/android/loading/cloud/backend/worker.py b/tools/android/loading/cloud/backend/worker.py
index 11bc744e3eb6291b570d1ea85efcdc6fee4272cb..0ee52a11a39540369a697e4ea5a98be3c005bfca 100644
--- a/tools/android/loading/cloud/backend/worker.py
+++ b/tools/android/loading/cloud/backend/worker.py
@@ -205,7 +205,9 @@ if __name__ == '__main__':
   args = parser.parse_args()
 
   # Configure logging.
-  logging.basicConfig(level=logging.WARNING)
+  logging.basicConfig(level=logging.WARNING,
+                      format='[%(asctime)s][%(levelname)s] %(message)s',

[mattcary, 2016/06/06 14:50:23]

Do you know if this ends up matching the same time zone as reported in the
appengine logging?

[droger, 2016/06/06 15:25:24]

It seems it is the same, but this is probably by chance.
Looking at the doc, it says that logging uses the local time by default.

Lets explicitly use UTC.

+                      datefmt='%y-%m-%d %H:%M:%S')
   worker_logger = logging.getLogger('worker')
   worker_logger.setLevel(logging.INFO)