If rules are specified plugin aborts after cleartool update:

.cleartool: Error: Errors were encountered in loading "/vobs/vvproject".

Done loading "/vobs/vvproject" (172 objects, copied 0 KB).
FATAL: Base ClearCase failed. exit code=1
FATAL: java.io.IOException: cleartool did not return the expected exit code. Command line="update -force -overwrite -log NUL -add_loadrules vobs/vvv_dev vobs/vvproject", actual exit code=1
ERROR: null
Sending e-mails to: username@........com
Finished: FAILURE

Without rules it completes successfully:

.cleartool: Error: Errors were encountered in loading "/vobs/vvproject".

Done loading "/vobs/vvproject" (172 objects, copied 0 KB).
Log has been written to "/somepath/workspace/viewname_jenkins01/update.2011-10-18T22:38:38+04:00.updt".
[workspace] $ /bin/sh -xe /tmp/hudson5388193271192598790.sh
+ date
Sending e-mails to: username@......com
Finished: SUCCESS

Is this a bug? Are there any workarounds for it?