Stefan reported this on the irc.  I (the sheriff) am not even aware of these builders.

https://uberchromegw.corp.google.com/i/chromeos.branch/builders/leon%20firmware%20firmware-leon-4389.61.B/builds/133

************************************************************
** Start Stage ManifestVersionedSync - 05:44:14
** 
** Stage that generates a unique manifest file, and sync's to it.
************************************************************
05:44:14: INFO: RunCommand: 'repo' 'manifest' in /b/cbuild/shared_internal
05:44:14: INFO: RunCommand: 'repo' 'selfupdate' in /b/cbuild/shared_internal
repo version v1.12.16-cr1 is current
05:44:15: INFO: RunCommand: 'repo' 'init' '--repo-url' 'http://git.chromium.org/git/external/repo' '--manifest-url' 'ssh://gerrit-int.chromium.org:29419/chromeos/manifest-internal' '--manifest-name' 'default.xml' '--manifest-branch' 'firmware-leon-4389.61.B' in /b/cbuild/shared_internal
ssh: connect to host gerrit-int.chromium.org port 29419: Connection refused
ssh: connect to host gerrit-int.chromium.org port 29419: Connection refused
fatal: Could not read from remote repository.