I think the polling log for the build provides the real reason here:
Polling Log View as plain text This page captures the polling log that triggered this build. Started on Jun 11, 2012 10:42:17 AM No workspace is available, so can't check for updates. Scheduling a new build to get a workspace. Done. Took 10 ms Changes found although "Changes found" is incorrect - it didn't have a workspace to compare against, so I think it couldn't determine whether changes had in fact occurred. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1011707 Title: Unnecessary rebuild triggered To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jenkins/+bug/1011707/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs