When I try to "darcs pull" an existing cl-variates checkout, I get this: Waiting for lock /home/quicklisp/quicklisp-controller/vcs-cache/cl-variates/8fdba34f923f1697c9fc5cfe92edcdac/_darcs/lock Couldn't get lock /home/quicklisp/quicklisp-controller/vcs-cache/cl-variates/8fdba34f923f1697c9fc5cfe92edcdac/_darcs/lock What should I do? Thanks, Zach