hydra build service stopped

[William Stevenson]

Last finished build was from 8/8/2011, error message from

http://hydra.nixos.org/jobset/gnu/emacs-trunk

Evaluation errors

Error pulling latest change bazaar branch at 
`bzr://bzr.savannah.gnu.org/emacs/trunk':
Unable to obtain lock 
file:///home/hydra/data/scm/756313532f0ed4fd1e3bb490e760963e8ab8fcef1e50b7b37ae82efe63dd2b30/
 held by hydra
at lucifer [process #1453], acquired 306 hours, 56 minutes ago.
Will continue to try until 19:24:40, unless you press Ctrl-C.
See "bzr help break-lock" for more.
bzr: ERROR: Could not acquire lock "(local)": 
file:///home/hydra/data/scm/756313532f0ed4fd1e3bb490e760963e8ab8fcef1e50b7b37ae82efe63dd2b30/