[root@sith rubygems-0.8.11]# ruby setup.rb
---> bin
<--- bin
---> lib
---> lib/rubygems
<--- lib/rubygems
<--- lib
---> bin
adjusting shebang: gem_mirror
<--- bin
---> lib
---> lib/rubygems
<--- lib/rubygems
<--- lib
rm -f InstalledFiles
---> bin
mkdir -p /usr/local/bin/
install gem /usr/local/bin/
install update_rubygems /usr/local/bin/
install gem_mirror /usr/local/bin/
install gemwhich /usr/local/bin/
install gem_server /usr/local/bin/
install generate_yaml_index.rb /usr/local/bin/
<--- bin
---> lib
mkdir -p /usr/local/lib/ruby/site_ruby/1.8/
install ubygems.rb /usr/local/lib/ruby/site_ruby/1.8/
install rubygems.rb /usr/local/lib/ruby/site_ruby/1.8/
install gemconfigure.rb /usr/local/lib/ruby/site_ruby/1.8/
---> lib/rubygems
mkdir -p /usr/local/lib/ruby/site_ruby/1.8/rubygems
install config_file.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install builder.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install user_interaction.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install custom_require.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install open-uri.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install command.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install format.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install remote_installer.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install doc_manager.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install cmd_manager.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install validator.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install installer.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install loadpath_manager.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install deployment.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install source_index.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install version.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install package.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install timer.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install old_format.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install security.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install gem_openssl.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install gem_runner.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install specification.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install dependency_list.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install rubygems_version.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
install gem_commands.rb /usr/local/lib/ruby/site_ruby/1.8/rubygems
<--- lib/rubygems
<--- lib

As of RubyGems 0.8.0, library stubs are no longer needed.
Searching $LOAD_PATH for stubs to optionally delete (may take a while)...
...done.
No library stubs found.

/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require__': no such file to load -- zlib (LoadError)
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/package.rb:9
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require__'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/builder.rb:1
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require__'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:61:in `manage_gems'
        from /usr/local/src/rubygems-0.8.11/./post-install.rb:64:in `install_sources'
        from /usr/local/src/rubygems-0.8.11/./post-install.rb:75:in `try_run_hook'
        from setup.rb:577:in `run_hook'
        from setup.rb:1315:in `exec_task_traverse'
        from setup.rb:1168:in `exec_install'
        from setup.rb:887:in `exec_install'
        from setup.rb:705:in `invoke'
        from setup.rb:674:in `invoke'
        from setup.rb:1352