betty-paladin-tryjob has been failing VMTest since mid Oct:
https://cros-goldeneye.corp.google.com/chromeos/legoland/builderSummary?buildBranch=&builderGroups=tryjob&limit=&email=&buildConfig=betty-paladin-tryjob

Here's the most recent build:
https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8927392105480430672

Fails with "cros_generate_test_payloads.py - ERROR   : Could not find PREGENERATED_UPDATE in log:"