ruby on rails - Capistrano error when using git -

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i trying setup capistrano , want test config locally before testing on server, when run cap deploy -n keep getting following error relating git

/users/josh/.rvm/gems/ruby-1.9.3-p448@wgbh/gems/capistrano-2.15.5/lib/capistrano/recipes/deploy/scm/git.rb:234:in `block in query_revision': undefined method `sub' nil:nilclass (nomethoderror)

and leading follows:

  * 2013-08-26 12:12:30 executing `deploy'   * 2013-08-26 12:12:30 executing `deploy:update'  ** transaction: start   * 2013-08-26 12:12:30 executing `deploy:update_code'   * executing locally: "git ls-remote git@github.com:git_repo git_branch" *** [deploy:update_code] rolling   * executing "rm -rf /u/apps/app_name/releases/20130826161230; true"

i have tried trace back, can't seem figure out causing it. deploy.rb looks follows:

require "bundler/capistrano"   set :application, "app_name" set :deply_to, "/the/server/path" set :user, "server_user"  set :repository,  "git@github.com:git_repo_path" set :scm, :git set :scm_username , "git_user_name" #this allows choose branch in command line or default master 'cap -s branch=branchname deploy' set :branch, fetch(:branch, "master")  #tells resuse single remote git clone set :deploy_via, :remote_cache  server "the_server_name", :app, :web, :db, :primary => true  after 'deploy:update_code', 'deploy:migrate'  # if using passenger mod_rails uncomment this: namespace :deploy  task :start ; end  task :stop ; end  task :restart, :roles => :app, :except => { :no_release => true }   run "#{try_sudo} touch #{file.join(current_path,'tmp','restart.txt')}"  end end

has else experienced error? found this post following 1 suggestion not change error @ all.

the issue appears when in dry run mode run_locally function returns array, not expected string.

see https://github.com/capistrano/capistrano/blob/legacy-v2/lib/capistrano/recipes/deploy.rb#l133

not sure if there easy way git recipe figure out in dry run mode. if hack in this:

# in recipes/deploy/scm/git.rb ~line 229 result = yield(command) return "666" if result.class == array  # better be: dry_run?

then -n invocation continues.


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