During kernel-devsrc-1.0-r0:do_install ERROR: [Errno 2] No such file or directory: 'TOPDIR/tmp/kernel-scripts.lock' Full logs at http://errors.yoctoproject.org/Errors/Details/537939/
Richard thinks this is due to a staged change to BitBake, see 'build: defer processing of [dirs] and [cleandirs] until after lockfiles are acquired' on the bitbake list.
This was caused by a patch that was only in master-next and has never been merged to master. The patch has been dropped so closing the defect.