src/Pure/Tools/build_stats.scala

--- a/src/Pure/Tools/build_stats.scala	Sat Oct 08 15:39:42 2016 +0200
+++ b/src/Pure/Tools/build_stats.scala	Sat Oct 08 15:45:47 2016 +0200
@@ -29,7 +29,7 @@
 
     val all_infos =
       Par_List.map((job_info: CI_API.Job_Info) =>
-        (job_info.timestamp / 1000, job_info.read_output.parse_build_info), job_infos)
+        (job_info.timestamp / 1000, job_info.read_main_log.parse_build_info), job_infos)
     val all_sessions =
       (Set.empty[String] /: all_infos)(
         { case (s, (_, info)) => s ++ info.sessions.keySet })