Capistrano Deploy Error - ruby-on-rails

Question

I've recently had to make some updates to an app that I haven't touched in about a year. When attempting to deploy with Capistrano (via Github), I get this error:
[deploy:update_code] exception while rolling back: IOError, closed stream
Full logged error here: https://gist.github.com/2829751
I reinstalled my server's SSH key after the Github SSH security scare. Nothing should have changed on the remote server, and deploying worked fine previously. The only significant change on my local system is moving to RVM.
Any ideas what's causing the error?
Here's my deploy.rb file, if that helps:
default_run_options[:pty] = true
set :domain, 'xxx.xxx.xxx'
set :repository, "XXX MY REPO XXX"
set :branch, 'master'
set :password, 'XXXXXXX'
set :deploy_to, "/var/www/#{domain}"
set :scm, :git
set :repository_cache, "git_cache"
set :deploy_via, :remote_cache
ssh_options[:paranoid] = false
set :user, "XXX"
set :runner, user
set :use_sudo, true
set :rails_env, 'production'
role :app, domain # multiple domains can be added here for parallel deployment (i.e. test_app)
role :web, domain
role :db, domain, :primary => true
namespace :deploy do
task :start, :roles => :app do
run "touch #{release_path}/tmp/restart.txt"
end
task :stop, :roles => :app do
# Do nothing.
end
desc "Restart Application"
task :restart, :roles => :app do
run "touch #{release_path}/tmp/restart.txt"
end
end
deploy.task :cold do
deploy.update
deploy.create_db
deploy.migrate
deploy.restart # Change to start if we're using mongrels
end
after "deploy:update_code", :update_config
after "deploy:restart", "delayed_job:restart"
after "deploy", "deploy:cleanup"
#links config files from shared to the release path and mongrel path after deployment
desc "Create all symlinks and files needed for app activation ofter deployment"
task :update_config, :roles => :web do
run "ln -s -f /var/www/#{domain}/shared/database.yml #{release_path}/config/database.yml"
run "ln -s -f /var/www/#{domain}/shared/app.yml #{release_path}/config/app.yml"
run "ln -s -f /var/www/#{domain}/shared/cache #{release_path}/public/cache"
run "ln -s -f /var/www/#{domain}/shared/survey_cache #{release_path}/public/surveys"
run "ln -s -f /var/www/#{domain}/shared/surveys #{release_path}/surveys"
end
desc "changes ownership to cbdsm:git"
task :update_permissions, :roles => :web do
sudo "chown -R #{user}:git /var/www/#{domain}"
end
namespace :delayed_job do
desc "Start the delayed_job process"
task :start, :roles => :app do
run "cd #{current_path} && RAILS_ENV=#{rails_env} script/delayed_job -n 3 start"
end
desc "Stop the delayed_job process"
task :stop, :roles => :app do
run "cd #{current_path} && RAILS_ENV=#{rails_env} script/delayed_job stop"
end
desc "Restart the delayed_job process"
task :restart, :roles => :app do
delayed_job.stop
delayed_job.start
end
end
UPDATE: This seems to be a problem set :use_sudo, true. Removing that line and any commands which require sudo seemed to fix the problem. It's still not entirely clear to me what changed--that made that line problematic. It worked fine before.
Additionally, I removed the default_run_options[:pty] = true line.

Answer 1

As posted above:
This seems to be a problem set :use_sudo, true. Removing that line and any commands which require sudo seemed to fix the problem. It's still not entirely clear to me what changed--that made that line problematic. It worked fine before.
Additionally, I removed the default_run_options[:pty] = true line.

Answer 2

In these cases post the /config/deploy.rb would help...
BTW, how do you set the :deploy_via setting? Try to change this to :remote_cache (from :copy):
set :deploy_via, :remote_cache
and see what happens.