Looks like we have a regression:
Old: https://screenshot.googleplex.com/aFe6Q75LuNb
New: https://screenshot.googleplex.com/pp4tRK2RTMp

Grabbing an alerts-dispatcher snapshot now.

Looks like all of the trees are showing no alerts right now. 

Lots of "Error getting alerts for builder" errors: https://uberchromegw.corp.google.com/i/internal.infra.cron/builders/alerts-dispatcher/builds/19625/steps/run%20alerts_dispatcher/logs/stdio

New CBE version seems to coincide with the onset of errors, lack of alerts: https://pantheon.corp.google.com/appengine/versions?project=chrome-build-extract&moduleId=default 

alert counts: https://viceroy.corp.google.com/chrome_infra/Services/alerts_dispatcher?duration=8d

hinoka@: can we roll back CBE and debug this offline?

Rolled back to 52a

Oh i see

https://chrome-build-extract.appspot.com/get_master/internal.client.clank

I didn't realize CBE could have internal masters...

That master actually is slated to be indexed by Milo... after a restart.

alerts are flowing again.