/usr/lib/ruby/vendor_ruby/Ice/ is in ruby-zeroc-ice 3.5.1-6.4ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/Ice/BuiltinSequences.rb
/usr/lib/ruby/vendor_ruby/Ice/Communicator.rb
/usr/lib/ruby/vendor_ruby/Ice/CommunicatorF.rb
/usr/lib/ruby/vendor_ruby/Ice/Connection.rb
/usr/lib/ruby/vendor_ruby/Ice/ConnectionF.rb
/usr/lib/ruby/vendor_ruby/Ice/Current.rb
/usr/lib/ruby/vendor_ruby/Ice/Endpoint.rb
/usr/lib/ruby/vendor_ruby/Ice/EndpointF.rb
/usr/lib/ruby/vendor_ruby/Ice/EndpointTypes.rb
/usr/lib/ruby/vendor_ruby/Ice/FacetMap.rb
/usr/lib/ruby/vendor_ruby/Ice/Identity.rb
/usr/lib/ruby/vendor_ruby/Ice/ImplicitContext.rb
/usr/lib/ruby/vendor_ruby/Ice/ImplicitContextF.rb
/usr/lib/ruby/vendor_ruby/Ice/Instrumentation.rb
/usr/lib/ruby/vendor_ruby/Ice/InstrumentationF.rb
/usr/lib/ruby/vendor_ruby/Ice/LocalException.rb
/usr/lib/ruby/vendor_ruby/Ice/Locator.rb
/usr/lib/ruby/vendor_ruby/Ice/LocatorF.rb
/usr/lib/ruby/vendor_ruby/Ice/Logger.rb
/usr/lib/ruby/vendor_ruby/Ice/LoggerF.rb
/usr/lib/ruby/vendor_ruby/Ice/Metrics.rb
/usr/lib/ruby/vendor_ruby/Ice/ObjectAdapterF.rb
/usr/lib/ruby/vendor_ruby/Ice/ObjectFactory.rb
/usr/lib/ruby/vendor_ruby/Ice/ObjectFactoryF.rb
/usr/lib/ruby/vendor_ruby/Ice/Plugin.rb
/usr/lib/ruby/vendor_ruby/Ice/PluginF.rb
/usr/lib/ruby/vendor_ruby/Ice/Process.rb
/usr/lib/ruby/vendor_ruby/Ice/ProcessF.rb
/usr/lib/ruby/vendor_ruby/Ice/Properties.rb
/usr/lib/ruby/vendor_ruby/Ice/PropertiesAdmin.rb
/usr/lib/ruby/vendor_ruby/Ice/PropertiesF.rb
/usr/lib/ruby/vendor_ruby/Ice/Router.rb
/usr/lib/ruby/vendor_ruby/Ice/RouterF.rb
/usr/lib/ruby/vendor_ruby/Ice/SliceChecksumDict.rb
/usr/lib/ruby/vendor_ruby/Ice/Stats.rb
/usr/lib/ruby/vendor_ruby/Ice/StatsF.rb
/usr/lib/ruby/vendor_ruby/Ice/Version.rb
/usr/lib/ruby/vendor_ruby/IceBox/IceBox.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Admin.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Descriptor.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Exception.rb
/usr/lib/ruby/vendor_ruby/IceGrid/FileParser.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Locator.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Observer.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Query.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Registry.rb
/usr/lib/ruby/vendor_ruby/IceGrid/Session.rb
/usr/lib/ruby/vendor_ruby/IceGrid/UserAccountMapper.rb
/usr/lib/ruby/vendor_ruby/IcePatch2/FileInfo.rb
/usr/lib/ruby/vendor_ruby/IcePatch2/FileServer.rb
/usr/lib/ruby/vendor_ruby/IceStorm/IceStorm.rb
/usr/lib/ruby/vendor_ruby/IceStorm/Metrics.rb