https://uberchromegw.corp.google.com/i/chromeos/builders/kefka-release/builds/729/steps/BuildPackages%20%5Bafdo_use%5D/logs/stdio

Snippet:

Pending 3/660, Building 1/1, [Time 01:49:21 | Elapsed 416m17.5s | Load 0.0 0.01 0.05]
Still building autotest-tests-cheets-0.0.1-r308 (275m37.2s). Logs in /tmp/autotest-tests-cheets-0.0.1-r308-wMfd89

@@@STEP_FAILURE@@@
01:50:42: ERROR: Timeout occurred- waited 27177 seconds, failing. Timeout reason: This build has reached the timeout deadline set by the master. Either this stage or a previous one took too long (see stage timing historical summary in ReportStage) or the build failed to start on time.

It would be interesting to see what it got stuck on.  There is a path to a log file, but I cannot find the builder name.  Would it be possible to add it to this log?