Traceback (most recent call last):
  File "/usr/bin/evmgr", line 514, in ?
    main()
  File "/usr/bin/evmgr", line 496, in main
    o.update(cron)
  File "/usr/bin/evmgr", line 209, in update
    svn.update(overlay_var)
pysvn._pysvn.ClientError: Working copy '/var/emission' locked