Capistrano 3.4.0 / rbenv and capistrano-rails-console - https://github.com/ydkn/capistrano-rails-console/issues/6

Capfile

# Load DSL and set up stages
require 'capistrano/setup'
require 'capistrano/deploy'

require 'capistrano/git/copy'
require 'capistrano/rbenv'
require 'capistrano/bundler'
require 'capistrano/rails'
require 'capistrano/rails/console'

deploy.rb

set :application, 'foobar'

set :scm,      :git_copy
set :repo_url, '/tmp/repo'

set :format,    :pretty
set :log_level, :debug

set :rbenv_ruby, '2.1.0'

server 'localhost:2222', user: 'vagrant', roles: %w(web app db)
set :deploy_to, '/home/vagrant'


namespace :deploy do

  task :restart

end

Gemfile

source 'https://rubygems.org'

gem 'rails', '4.2.1'
gem 'sqlite3'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
gem 'jquery-rails'
gem 'turbolinks'

group :development do
  gem 'capistrano',               require: false
  gem 'capistrano-git-copy',      require: false
  gem 'capistrano-rbenv',         require: false
  gem 'capistrano-bundler',       require: false
  gem 'capistrano-rails',         require: false
  gem 'capistrano-rails-console', require: false
end