Eu instalei o jruby-1.7.16 usando o rvm e tendo o java open jdk versão 1.7.0_75.
bundle install obtém sucesso abaixo estão os erros quando executo o bundle exec rake db: migrate --trace
test@pts00433-vm8:~/Travis/travis-logs$ bundle exec rake db:migrate --trace
Jdbc-Postgres is only for use with JRuby
** Invoke db:migrate (first_time)
** Execute db:migrate
rake aborted!
Sequel::AdapterNotFound: LoadError: cannot load such file -- java
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/adapters/jdbc.rb:1:in 'require'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/adapters/jdbc.rb:1:in '<top (required)>'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/database/connecting.rb:29:in 'require'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/database/connecting.rb:29:in 'adapter_class'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/database/connecting.rb:52:in 'connect'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/core.rb:95:in 'connect'
/home/test/Travis/travis-logs/lib/travis/logs/helpers/database.rb:18:in 'create_sequel'
/home/test/Travis/travis-logs/Rakefile:14:in 'block (2 levels) in <top (required)>'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in 'call'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in 'block in execute'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in 'each'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in 'execute'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:179:in 'block in invoke_with_call_chain'
/usr/lib/ruby/2.1.0/monitor.rb:211:in 'mon_synchronize'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:172:in 'invoke_with_call_chain'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:165:in 'invoke'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:150:in 'invoke_task'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in 'block (2 levels) in top_level'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in 'each'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in 'block in top_level'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:115:in 'run_with_threads'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:100:in 'top_level'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:78:in 'block in run'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:176:in 'standard_exception_handling'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:75:in 'run'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/bin/rake:33:in '<top (required)>'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/bin/rake:23:in 'load'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/bin/rake:23:in '<main>'
LoadError: cannot load such file -- java
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/adapters/jdbc.rb:1:in 'require'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/adapters/jdbc.rb:1:in '<top (required)>'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/database/connecting.rb:29:in 'require'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/database/connecting.rb:29:in 'adapter_class'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/database/connecting.rb:52:in 'connect'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/sequel-4.0.0/lib/sequel/core.rb:95:in 'connect'
/home/test/Travis/travis-logs/lib/travis/logs/helpers/database.rb:18:in 'create_sequel'
/home/test/Travis/travis-logs/Rakefile:14:in 'block (2 levels) in <top (required)>'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in 'call'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in 'block in execute'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in 'each'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in 'execute'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:179:in 'block in invoke_with_call_chain'
/usr/lib/ruby/2.1.0/monitor.rb:211:in 'mon_synchronize'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:172:in 'invoke_with_call_chain'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:165:in 'invoke'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:150:in 'invoke_task'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in 'block (2 levels) in top_level'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in 'each'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in 'block in top_level'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:115:in 'run_with_threads'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:100:in 'top_level'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:78:in 'block in run'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:176:in 'standard_exception_handling'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:75:in 'run'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/gems/rake-10.4.2/bin/rake:33:in '<top (required)>'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/bin/rake:23:in 'load'
/home/test/Travis/travis-logs/vendor/bundle/ruby/2.1.0/bin/rake:23:in '<main>'
Tasks: TOP => db:migrate