/usr/lib/ruby/vendor_ruby/ is in capistrano 2.12.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/capistrano.rb
/usr/lib/ruby/vendor_ruby/capistrano/
/usr/lib/ruby/vendor_ruby/capistrano/configuration.rb
/usr/lib/ruby/vendor_ruby/capistrano/ssh.rb
/usr/lib/ruby/vendor_ruby/capistrano/command.rb
/usr/lib/ruby/vendor_ruby/capistrano/errors.rb
/usr/lib/ruby/vendor_ruby/capistrano/role.rb
/usr/lib/ruby/vendor_ruby/capistrano/version.rb
/usr/lib/ruby/vendor_ruby/capistrano/fix_rake_deprecated_dsl.rb
/usr/lib/ruby/vendor_ruby/capistrano/shell.rb
/usr/lib/ruby/vendor_ruby/capistrano/cli.rb
/usr/lib/ruby/vendor_ruby/capistrano/processable.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/
/usr/lib/ruby/vendor_ruby/capistrano/configuration/alias_task.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/roles.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/execution.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/actions/
/usr/lib/ruby/vendor_ruby/capistrano/configuration/actions/file_transfer.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/actions/invocation.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/actions/inspect.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/servers.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/callbacks.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/variables.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/namespaces.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/connections.rb
/usr/lib/ruby/vendor_ruby/capistrano/configuration/loading.rb
/usr/lib/ruby/vendor_ruby/capistrano/task_definition.rb
/usr/lib/ruby/vendor_ruby/capistrano/logger.rb
/usr/lib/ruby/vendor_ruby/capistrano/server_definition.rb
/usr/lib/ruby/vendor_ruby/capistrano/cli/
/usr/lib/ruby/vendor_ruby/capistrano/cli/help.rb
/usr/lib/ruby/vendor_ruby/capistrano/cli/execute.rb
/usr/lib/ruby/vendor_ruby/capistrano/cli/options.rb
/usr/lib/ruby/vendor_ruby/capistrano/cli/ui.rb
/usr/lib/ruby/vendor_ruby/capistrano/cli/help.txt
/usr/lib/ruby/vendor_ruby/capistrano/callback.rb
/usr/lib/ruby/vendor_ruby/capistrano/extensions.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/
/usr/lib/ruby/vendor_ruby/capistrano/recipes/standard.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/templates/
/usr/lib/ruby/vendor_ruby/capistrano/recipes/templates/maintenance.rhtml
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/unshared_remote_cache.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/export.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/checkout.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/base.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/remote.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/remote_cache.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy/copy.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/local_dependency.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/templates/
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/templates/maintenance.rhtml
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/strategy.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/remote_dependency.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/bzr.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/mercurial.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/git.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/subversion.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/accurev.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/darcs.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/base.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/perforce.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/none.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm/cvs.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/scm.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/dependencies.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy/assets.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/deploy.rb
/usr/lib/ruby/vendor_ruby/capistrano/recipes/compat.rb
/usr/lib/ruby/vendor_ruby/capistrano/ext/
/usr/lib/ruby/vendor_ruby/capistrano/ext/string.rb
/usr/lib/ruby/vendor_ruby/capistrano/ext/multistage.rb
/usr/lib/ruby/vendor_ruby/capistrano/transfer.rb