678 bytes added,
18:03, 20 April 2015 Mozmill tests where re-written using Marionette ([[Auto-tools/Projects/m21s|m21s project)]].
The update testing was also ported and it is being integrated as part of the automated release process ({{bug|1148546}}).
The tests are being integrated inside of [https://github.com/mozilla/build-tools/blob/master/release/updates/verify.sh verify.sh] (not yet).
= Failure modes =
== AUS is temporarily unavailable ==
Update not available.
A 503 message can be found in the gecko.log
== FTP/stage/S3 is temporarily ==
Update not available.
== Socket 2828 is unavailable ==
The socket for Marionette was left open.
Harness does not run.
This can also be caused if Firefox crashes.