Issues with running RVM with Rake

.zshrc

# Which plugins would you like to load? (plugins can be found in ~/.oh-my-zsh/plugins/*)
# Example format: plugins=(rails git textmate ruby lighthouse)                  
plugins=(git) 

source $ZSH/oh-my-zsh.sh                                                        

# Customize to your needs... 
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function

output

rake testRVM
(in /Users/ashish/repos/cs-groupon)
rvm list
Using /Users/ashish/.rvm/gems/ree-1.8.7-2010.02 with gemset cs

rvm rubies

   rbx-head [ x86_64 ]
=> ree-1.8.7-2010.02 [ i686 ]
   ruby-1.8.7-p352 [ i686 ]
   ruby-1.9.2-p290 [ i386 ]
   ruby-1.9.2-p290-patched [ i386 ]
   ruby-1.9.3-rc1 [ x86_64 ]


********************************************************************

gemdir
/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/spec_set.rb:88:in `materialize': Could not find rake-0.8.7 in any of the sources (Bundler::GemNotFound)
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/spec_set.rb:82:in `map!'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/spec_set.rb:82:in `materialize'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/definition.rb:90:in `specs'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/definition.rb:135:in `specs_for'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/definition.rb:124:in `requested_specs'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/environment.rb:23:in `requested_specs'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/runtime.rb:11:in `setup'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler.rb:110:in `setup'
	from /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib/bundler/setup.rb:17
Using /Users/ashish/.rvm/gems/ree-1.8.7-2010.02 with gemset cs

********************************************************************

current
Using /Users/ashish/.rvm/gems/ree-1.8.7-2010.02 with gemset cs
ree-1.8.7-2010.02@cs
********************************************************************

GEM_HOME: /Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs

********************************************************************

rvm info
Using /Users/ashish/.rvm/gems/ree-1.8.7-2010.02 with gemset cs

ree-1.8.7-2010.02@cs:

  system:
    uname:       "Darwin G15442.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64"
    bash:        "/bin/bash => GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin10.0)"
    zsh:         "/bin/zsh => zsh 4.3.9 (i386-apple-darwin10.0)"

  rvm:
    version:      "rvm 1.9.2 by Wayne E. Seguin (wayneeseguin@gmail.com) [https://rvm.beginrescueend.com/]"

  ruby:
    interpreter:  "ruby"
    version:      "1.8.7"
    date:         "2010-04-19"
    platform:     "i686-darwin10.8.0"
    patchlevel:   "2010-04-19 patchlevel 253"
    full_version: "ruby 1.8.7 (2010-04-19 patchlevel 253) [i686-darwin10.8.0], MBARI 0x6770, Ruby Enterprise Edition 2010.02"

  homes:
    gem:          "/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs"
    ruby:         "/Users/ashish/.rvm/rubies/ree-1.8.7-2010.02"

  binaries:
    ruby:         "/Users/ashish/.rvm/rubies/ree-1.8.7-2010.02/bin/ruby"
    irb:          "/Users/ashish/.rvm/rubies/ree-1.8.7-2010.02/bin/irb"
    gem:          "/Users/ashish/.rvm/rubies/ree-1.8.7-2010.02/bin/gem"
    rake:         "/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@global/bin/rake"

  environment:
    PATH:         "/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/bin:/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@global/bin:/Users/ashish/.rvm/rubies/ree-1.8.7-2010.02/bin:/Users/ashish/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin"
    GEM_HOME:     "/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs"
    GEM_PATH:     "/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs:/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@global"
    MY_RUBY_HOME: "/Users/ashish/.rvm/rubies/ree-1.8.7-2010.02"
    IRBRC:        "/Users/ashish/.rvm/rubies/ree-1.8.7-2010.02/.irbrc"
    RUBYOPT:      "-I/Users/ashish/.rvm/gems/ree-1.8.7-2010.02@cs/gems/bundler-1.0.21/lib -rbundler/setup"
    gemset:       "cs"

test.rake

desc "testing to see if rvm is working with Rake correctly"
task :testRVM do
  puts "rvm list"
  puts `rvm list`
  puts 
  puts "********************************************************************"
  puts
  puts "gemdir"
  puts `rvm ree-1.8.7-2010.02@cs do rvm gemdir`
  puts
  puts "********************************************************************"
  puts
  puts "current"
  puts `rvm current`
  puts "********************************************************************"
  puts
  puts "GEM_HOME: #{ENV['GEM_HOME']}"
  puts
  puts "********************************************************************"
  puts
  puts "rvm info"
  puts `rvm info`
end