Automatically deal with stuck buildds

[Max Bowsher]

https://launchpad.net/ubuntu/+source/ardour/1:2.7.1-2ubuntu1/+build/867461 started on kohnen at 2009-02-14 00:42:41 GMT, and was still going 2 days later, needing manual aborting.

Celso asked me on IRC to file a bug suggesting some sort of automated handling of stuck builds based on build-time estimates - i.e. reset if the build has no activity and is past a certain percentage leeway over the estimated time.

For reference, the live console output webpage was showing "Session terminated, killing shell... ...killed." at the end, for the specific stuck build I'm mentioning, suggesting that perhaps the buildd infrastructure had already tried to terminate the build but got stuck doing so?

[Celso Providelo (cprov)]

Note that this implementation depends on proper 'abort' support on launchpad-buildd. See more information at bug #54730.