CruiseControl problem. Broken Pipe?

[mj]

Hi Friends,

Just happened to catch this err in the CC log:

Build loop failed
BuilderError: Write failed: Broken pipe
../script/../config/../app/models/subversion.rb:98:in
`execute_in_local_copy'
../script/../config/../lib/command_line.rb:86:in `call'
../script/../config/../lib/command_line.rb:86:in `e'
../script/../config/../lib/command_line.rb:84:in `popen'
../script/../config/../lib/command_line.rb:84:in `e'
../script/../config/../lib/command_line.rb:71:in `execute'
../script/../config/../lib/command_line.rb:70:in `chdir'
../script/../config/../lib/command_line.rb:70:in `execute'
../script/../config/../app/models/subversion.rb:89:in
`execute_in_local_copy'
../script/../config/../app/models/subversion.rb:85:in `chdir'
../script/../config/../app/models/subversion.rb:85:in
`execute_in_local_copy'
../script/../config/../app/models/subversion.rb:57:in `update'
../script/../config/../app/models/project.rb:277:in
`update_project_to_revision'
../script/../config/../app/models/project.rb:293:in `build'
../script/../config/../app/models/project.rb:209:in
`build_if_necessary'
../script/../config/../app/models/polling_scheduler.rb:13:in `run'
../script/builder:79
../script/builder:78:in `catch'
../script/builder:78
script/../config/../cruise:14:in `load'
script/../config/../cruise:14:in `builder'
script/../config/../cruise:68:in `send'
script/../config/../cruise:68
/usr/lib/ruby/1.8/fileutils.rb:121:in `chdir'
/usr/lib/ruby/1.8/fileutils.rb:121:in `cd'
script/../config/../cruise:67
[error] Write failed: Broken pipe

Any ideas as to what a broken pipe is referring to? Any help is
appreciated.