Bundler error inside deploy_revision before_migrate

deploy_revision before_migrate

 before_migrate do
      if app['main']['uses_bundler']
        link "#{release_path}/vendor/bundle" do
          to "#{app['main']['deploy_to']}/shared/vendor_bundle"
        end
        common_groups = %w{development test cucumber staging production}
        execute "LANG=en_US.UTF-8 LC_ALL='en_US.UTF-8' bundle install --deployment --without #{(common_groups -([app['main']['rails_env']])).join(' ')}" do
          ignore_failure true
          cwd release_path
          environment ({'LANG' => 'en_US.UTF-8'})
        end
      end

    end

error in DEBUG

[Fri, 27 Jan 2012 18:20:24 +0000] INFO: Processing execute[bundle install --deployment --without development test cucumber staging] action run (/var/cache/chef/cookbooks/agi_application/recipes/rails.rb line 221)
[Fri, 27 Jan 2012 18:20:24 +0000] INFO: execute[bundle install --deployment --without development test cucumber staging] sh(bundle install --deployment --without development test cucumber staging)
[Fri, 27 Jan 2012 18:21:03 +0000] ERROR: execute[bundle install --deployment --without development test cucumber staging] (/var/cache/chef/cookbooks/agi_application/recipes/rails.rb line 221) had an error: Expected process to exit with [0], but received '5'
---- Begin output of bundle install --deployment --without development test cucumber staging ----
STDOUT: Fetching source index for http://rubygems.org/
Installing rake (0.9.2.2) 
Installing multi_json (1.0.4) 
Installing activesupport (3.1.3) 
Installing builder (3.0.0) 
Installing i18n (0.6.0) 
Installing activemodel (3.1.3) 
Installing erubis (2.7.0) 
Installing rack (1.3.6) 
Installing rack-cache (1.1) 
Installing rack-mount (0.8.3) 
Installing rack-test (0.6.1) 
Installing hike (1.2.1) 
Installing tilt (1.3.3) 
Installing sprockets (2.0.3) 
Installing actionpack (3.1.3) 
Installing mime-types (1.17.2) 
Installing polyglot (0.3.3) 
Installing treetop (1.4.10) 
Installing mail (2.3.0) 
Installing actionmailer (3.1.3) 
Installing arel (2.2.1) 
Installing tzinfo (0.3.31) 
Installing activerecord (3.1.3) 
Installing activeresource (3.1.3) 
Installing coffee-script-source (1.2.0) 
Installing execjs (1.3.0) 
Installing coffee-script (2.2.0) 
Installing rack-ssl (1.3.2) 
Installing json (1.6.5) with native extensions 
Installing rdoc (3.12) 
Installing thor (0.14.6) 
Installing railties (3.1.3) 
Installing coffee-rails (3.1.1) 

ArgumentError: invalid byte sequence in US-ASCII
An error occured while installing jquery-rails (1.0.19), and Bundler cannot continue.
Make sure that `gem install jquery-rails -v '1.0.19'` succeeds before bundling.
STDERR: 
---- End output of bundle install --deployment --without development test cucumber staging ----
Ran bundle install --deployment --without development test cucumber staging returned 5

error in debug using export LANG

[Fri, 27 Jan 2012 18:39:52 +0000] INFO: Processing execute[export LANG=en_US.UTF-8; bundle install --deployment --without development test cucumber staging] action run (/var/cache/chef/cookbooks/agi_application/recipes/rails.rb line 221)
[Fri, 27 Jan 2012 18:39:52 +0000] INFO: execute[export LANG=en_US.UTF-8; bundle install --deployment --without development test cucumber staging] sh(export LANG=en_US.UTF-8; bundle install --deployment --without development test cucumber staging)
[Fri, 27 Jan 2012 18:40:25 +0000] ERROR: execute[export LANG=en_US.UTF-8; bundle install --deployment --without development test cucumber staging] (/var/cache/chef/cookbooks/agi_application/recipes/rails.rb line 221) had an error: Expected process to exit with [0], but received '5'
---- Begin output of export LANG=en_US.UTF-8; bundle install --deployment --without development test cucumber staging ----
STDOUT: Fetching source index for http://rubygems.org/
Installing rake (0.9.2.2) 
Installing multi_json (1.0.4) 
Installing activesupport (3.1.3) 
Installing builder (3.0.0) 
Installing i18n (0.6.0) 
Installing activemodel (3.1.3) 
Installing erubis (2.7.0) 
Installing rack (1.3.6) 
Installing rack-cache (1.1) 
Installing rack-mount (0.8.3) 
Installing rack-test (0.6.1) 
Installing hike (1.2.1) 
Installing tilt (1.3.3) 
Installing sprockets (2.0.3) 
Installing actionpack (3.1.3) 
Installing mime-types (1.17.2) 
Installing polyglot (0.3.3) 
Installing treetop (1.4.10) 
Installing mail (2.3.0) 
Installing actionmailer (3.1.3) 
Installing arel (2.2.1) 
Installing tzinfo (0.3.31) 
Installing activerecord (3.1.3) 
Installing activeresource (3.1.3) 
Installing coffee-script-source (1.2.0) 
Installing execjs (1.3.0) 
Installing coffee-script (2.2.0) 
Installing rack-ssl (1.3.2) 
Installing json (1.6.5) with native extensions 
Installing rdoc (3.12) 
Installing thor (0.14.6) 
Installing railties (3.1.3) 
Installing coffee-rails (3.1.1) 

ArgumentError: invalid byte sequence in US-ASCII
An error occured while installing jquery-rails (1.0.19), and Bundler cannot continue.
Make sure that `gem install jquery-rails -v '1.0.19'` succeeds before bundling.
STDERR: 
---- End output of export LANG=en_US.UTF-8; bundle install --deployment --without development test cucumber staging ----
Ran export LANG=en_US.UTF-8; bundle install --deployment --without development test cucumber staging returned 5

locale output

root@machinename:/mnt# locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
root@machinename:/mnt# sudo su - medidata

it's a Unix system, I know this

medidata@machinename:~$ locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
medidata@machinename:~$ exit
logout
root@machinename:/mnt# su medidata
medidata@machinename:/mnt$ locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
medidata@machinename:/mnt$