Capistrano Deployment: a Task before `deploy:finalize_update` Is not Executed - deployment

Question

I'm using Capistrano v2.13.4 for deployment.
A Capistrano task (deploy:special_treats) before deploy:finalize_update is not executed.
The task deploy:special_treats does some preparation (setup the internet access) for bundle:install, otherwise, bundle:install will not be able to reach the Internet ([out :: servername] Could not reach https://rubygems.org/
In config/deploy.rb
before 'deploy:finalize_update', 'deploy:special_treats'
and
namespace :deploy do
task :special_treats do
run "echo 'something special treats: setup the Internet access'"
end
end
The result for cap deploy:update
$ cap deploy:update
* executing `deploy:update'
** transaction: start
* executing `deploy:update_code'
executing locally: "svn info https://svnlinks --username username --password password --no-auth-cache -rHEAD"
command finished in 10336ms
* getting (via export) revision 33268 to /tmp/20120927171608
executing locally: svn export -q --username username --password password --no-auth-cache -r33268 https://svnlinks /tmp/20120927171608
command finished in 79314ms
* processing exclusions...
* Compressing /tmp/20120927171608 to /tmp/20120927171608.tar.gz
executing locally: tar czf 20120927171608.tar.gz 20120927171608
command finished in 1401ms
servers: ["servername"]
** sftp upload /tmp/20120927171608.tar.gz -> /tmp/20120927171608.tar.gz
[servername] /tmp/20120927171608.tar.gz
[servername] done
* sftp upload complete
* executing "cd /usr/website/rr/releases && tar xzf /tmp/20120927171608.tar.gz && rm /tmp/20120927171608.tar.gz"
servers: ["servername"]
[servername] executing command
command finished in 774ms
* executing `deploy:finalize_update'
triggering before callbacks for `deploy:finalize_update'
* executing `bundle:install'
* executing "cd /usr/website/rr/releases/20120927171608 && bundle install --gemfile /usr/website/rr/releases/20120927171608/Gemfile --path /usr/website/rr/shared/bundle --deployment --quiet --without development
test"
servers: ["servername"]
[servername] executing command
** [out :: servername] Could not reach https://rubygems.org/
command finished in 1403ms
*** [deploy:update_code] rolling back
* executing "rm -rf /usr/website/rr/releases/20120927171608; true"
servers: ["servername"]
[servername] executing command
command finished in 344ms
failed: "rvm_path=$HOME/.rvm/ $HOME/.rvm/bin/rvm-shell '1.9.3-p194' -c 'cd /usr/website/rr/releases/20120927171608 && bundle install --gemfile /usr/website/rr/releases/20120927171608/Gemfile --path
/usr/website/rr/shared/bundle --deployment --quiet --without development test'" on servername

Answer 1

I just had the same issue but in the after deploy:finalize_update trigger. The difference is that my script works in another machine for a long time.
I don't have capistrano locked as a gem in the Gemfile, so I tried reverting to the same version of the working machine which is 2.6.0 but that did not fix it.
After some research and several trials, I have found some issues at the github project like this that leads to that but looks like folks can't fully reproduce it.
I have then headed to the docs and browsing I found that Capistrano behaviors have been affected by recent changes on the 0.9.x versions of rake that have to do with namespace conflicts as you can see in this brief and tiny note that can be found at the deploy:create_symlink section of Capistrano Tasks wiki page
I did not have time to fix the script to work with latest versions of both rake and capistrano but I was able to have it back working on a different machine by reverting rake to version 0.8.7.
I hope this can get you going and provide some clues towards the solution.