root@ubuntu:/usr/share/ruby-rvm/log/ruby-1.9.3# rvm install 1.9.3
Installing Ruby from source to: /usr/share/ruby-rvm/rubies/ruby-1.9.3, this may take a while depending on your cpu(s)...

ruby-1.9.3 - #fetching
ruby-1.9.3 - #extracted to /usr/share/ruby-rvm/src/ruby-1.9.3 (already extracted)
ruby-1.9.3 - #configuring
ruby-1.9.3 - #compiling
ruby-1.9.3 - #installing
Removing old Rubygems files...
-e:1: Use RbConfig instead of obsolete and deprecated Config.
Installing rubygems dedicated to ruby-1.9.3...
Installing rubygems for /usr/share/ruby-rvm/rubies/ruby-1.9.3/bin/ruby
ERROR: Error running 'GEM_PATH="/usr/share/ruby-rvm/gems/ruby-1.9.3:/usr/share/ruby-rvm/gems/ruby-1.9.3@global:/usr/share/ruby-rvm/gems/ruby-1.9.3:/usr/share/ruby-rvm/gems/ruby-1.9.3@global" GEM_HOME="/usr/share/ruby-rvm/gems/ruby-1.9.3" "/usr/share/ruby-rvm/rubies/ruby-1.9.3/bin/ruby" "/usr/share/ruby-rvm/src/rubygems-1.6.2/setup.rb"', please read /usr/share/ruby-rvm/log/ruby-1.9.3/rubygems.install.log
WARN: Installation of rubygems did not complete successfully.
ruby-1.9.3 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.9.3 - #importing default gemsets (/usr/share/ruby-rvm/gemsets/)
Install of ruby-1.9.3 - #complete


root@ubuntu:/usr/share/ruby-rvm/log/ruby-1.9.3# cat rubygems.install.log

[2012-02-01 13:52:36] GEM_PATH="/usr/share/ruby-rvm/gems/ruby-1.9.3:/usr/share/ruby-rvm/gems/ruby-1.9.3@global:/usr/share/ruby-rvm/gems/ruby-1.9.3:/usr/share/ruby-rvm/gems/ruby-1.9.3@global" GEM_HOME="/usr/share/ruby-rvm/gems/ruby-1.9.3" "/usr/share/ruby-rvm/rubies/ruby-1.9.3/bin/ruby" "/usr/share/ruby-rvm/src/rubygems-1.6.2/setup.rb"
/usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems.rb:480:in `find_files': undefined method `map' for Gem::Specification:Class (NoMethodError)
	from /usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems.rb:1087:in `load_plugins'
	from /var/cache/ruby-rvm/src/rubygems-1.6.2/lib/rubygems/gem_runner.rb:84:in `<top (required)>'
	from /usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
	from /usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
	from /usr/share/ruby-rvm/src/rubygems-1.6.2/setup.rb:25:in `<main>'
[2012-02-01 13:58:09] GEM_PATH="/usr/share/ruby-rvm/gems/ruby-1.9.3:/usr/share/ruby-rvm/gems/ruby-1.9.3@global:/usr/share/ruby-rvm/gems/ruby-1.9.3:/usr/share/ruby-rvm/gems/ruby-1.9.3@global" GEM_HOME="/usr/share/ruby-rvm/gems/ruby-1.9.3" "/usr/share/ruby-rvm/rubies/ruby-1.9.3/bin/ruby" "/usr/share/ruby-rvm/src/rubygems-1.6.2/setup.rb"
/usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems.rb:480:in `find_files': undefined method `map' for Gem::Specification:Class (NoMethodError)
	from /usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems.rb:1087:in `load_plugins'
	from /var/cache/ruby-rvm/src/rubygems-1.6.2/lib/rubygems/gem_runner.rb:84:in `<top (required)>'
	from /usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
	from /usr/share/ruby-rvm/rubies/ruby-1.9.3/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
	from /usr/share/ruby-rvm/src/rubygems-1.6.2/setup.rb:25:in `<main>'
root@ubuntu:/usr/share/ruby-rvm/log/ruby-1.9.3#