Really fix the build status

endpoints/api/build.py

@@ -49,15 +49,17 @@ def trigger_view(trigger):
 
 
 def build_status_view(build_obj, can_write=False):
+  phase = build_obj.phase
   try:
     status = build_logs.get_status(build_obj.uuid)
   except BuildStatusRetrievalError:
-    status = None
+    status = {}
+    phase = 'cannot_load'
 
   logger.debug('Can write: %s job_config: %s', can_write, build_obj.job_config)
   resp = {
     'id': build_obj.uuid,
-    'phase': build_obj.phase if status else 'cannot_load',
+    'phase': phase,
     'started': format_date(build_obj.started),
     'display_name': build_obj.display_name,
     'status': status or {},