/usr/lib/ruby/1.8/mcollective/ is in mcollective-common 1.2.1+dfsg-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/1.8/mcollective/agents.rb
/usr/lib/ruby/1.8/mcollective/application.rb
/usr/lib/ruby/1.8/mcollective/applications.rb
/usr/lib/ruby/1.8/mcollective/client.rb
/usr/lib/ruby/1.8/mcollective/config.rb
/usr/lib/ruby/1.8/mcollective/connector/
/usr/lib/ruby/1.8/mcollective/connector.rb
/usr/lib/ruby/1.8/mcollective/connector/base.rb
/usr/lib/ruby/1.8/mcollective/facts/
/usr/lib/ruby/1.8/mcollective/facts.rb
/usr/lib/ruby/1.8/mcollective/facts/base.rb
/usr/lib/ruby/1.8/mcollective/log.rb
/usr/lib/ruby/1.8/mcollective/logger/
/usr/lib/ruby/1.8/mcollective/logger.rb
/usr/lib/ruby/1.8/mcollective/logger/base.rb
/usr/lib/ruby/1.8/mcollective/logger/console_logger.rb
/usr/lib/ruby/1.8/mcollective/logger/file_logger.rb
/usr/lib/ruby/1.8/mcollective/logger/syslog_logger.rb
/usr/lib/ruby/1.8/mcollective/monkey_patches.rb
/usr/lib/ruby/1.8/mcollective/optionparser.rb
/usr/lib/ruby/1.8/mcollective/pluginmanager.rb
/usr/lib/ruby/1.8/mcollective/registration/
/usr/lib/ruby/1.8/mcollective/registration.rb
/usr/lib/ruby/1.8/mcollective/registration/base.rb
/usr/lib/ruby/1.8/mcollective/request.rb
/usr/lib/ruby/1.8/mcollective/rpc/
/usr/lib/ruby/1.8/mcollective/rpc.rb
/usr/lib/ruby/1.8/mcollective/rpc/actionrunner.rb
/usr/lib/ruby/1.8/mcollective/rpc/agent.rb
/usr/lib/ruby/1.8/mcollective/rpc/audit.rb
/usr/lib/ruby/1.8/mcollective/rpc/client.rb
/usr/lib/ruby/1.8/mcollective/rpc/ddl.rb
/usr/lib/ruby/1.8/mcollective/rpc/helpers.rb
/usr/lib/ruby/1.8/mcollective/rpc/progress.rb
/usr/lib/ruby/1.8/mcollective/rpc/reply.rb
/usr/lib/ruby/1.8/mcollective/rpc/request.rb
/usr/lib/ruby/1.8/mcollective/rpc/result.rb
/usr/lib/ruby/1.8/mcollective/rpc/stats.rb
/usr/lib/ruby/1.8/mcollective/runner.rb
/usr/lib/ruby/1.8/mcollective/runnerstats.rb
/usr/lib/ruby/1.8/mcollective/security/
/usr/lib/ruby/1.8/mcollective/security.rb
/usr/lib/ruby/1.8/mcollective/security/base.rb
/usr/lib/ruby/1.8/mcollective/shell.rb
/usr/lib/ruby/1.8/mcollective/ssl.rb
/usr/lib/ruby/1.8/mcollective/util.rb
/usr/lib/ruby/1.8/mcollective/vendor/
/usr/lib/ruby/1.8/mcollective/vendor.rb
/usr/lib/ruby/1.8/mcollective/vendor/require_vendored.rb