Here are three examples in evaluation 102697 (the latest) of packages that aborted because the garbage collector deleted their .drv files. These builds cannot be restarted.
http://hydra.gnu.org/build/237336 http://hydra.gnu.org/build/237342 http://hydra.gnu.org/build/237338 In all three cases, the error output looks like this: --8<---------------cut here---------------start------------->8--- these derivations will be built: /gnu/store/ayjvjvmpaiwlj36vvfygdfbl48ql3gcb-wicd-1.7.3.tar.xz.drv /gnu/store/v88dz8vic2qj1jkv1a38s7x583klv3rq-wicd-1.7.3.drv waiting for the big garbage collector lock... cannot build missing derivation `/gnu/store/v88dz8vic2qj1jkv1a38s7x583klv3rq-wicd-1.7.3.drv' error: build of `/gnu/store/v88dz8vic2qj1jkv1a38s7x583klv3rq-wicd-1.7.3.drv' failed --8<---------------cut here---------------end--------------->8--- Mark
