ruby on rails - What is causing these errors in my Heroku app? -

i getting following errors when heroku worker runs delayed_job , cannot work out why. first error seems related evernote gem, though don't have code @ uses yet in entire project. have is

gem 'evernote', "~> 0.9.0" 

in gemfile.

the second 1 seems related newrelic heroku addon, application monitoring service. monitor application have no idea causing error.

what causing these errors?

1st

2011-05-11t03:31:22+00:00 heroku[worker.3]: stopping process sigterm 2011-05-11t03:31:22+00:00 app[worker.3]: rake aborted! 2011-05-11t03:31:22+00:00 app[worker.3]: sigterm 2011-05-11t03:31:22+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in `require' 2011-05-11t03:31:22+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in `block in require' 2011-05-11t03:31:22+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:225:in `block in load_dependency' 2011-05-11t03:31:22+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:591:in `new_constants_in' 2011-05-11t03:31:22+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:225:in `load_dependency' 2011-05-11t03:31:22+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in `require' 2011-05-11t03:31:22+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/evernote-0.9.0/vendor/gen-rb/evernote.rb:5:in `<top (required)>' 2011-05-11t03:31:22+00:00 heroku[worker.3]: process exited 2011-05-10t20:31:23-07:00 heroku[worker.2]: state changed stopping 

2nd

2011-05-11t03:31:25+00:00 heroku[worker.2]: stopping process sigterm 2011-05-11t03:31:25+00:00 app[worker.2]: rake aborted! 2011-05-11t03:31:25+00:00 app[worker.2]: sigterm 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching/pages.rb:38:in `extend' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching/pages.rb:38:in `<module:pages>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching/pages.rb:37:in `<module:caching>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching/pages.rb:6:in `<module:actioncontroller>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching/pages.rb:5:in `<top (required)>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching.rb:60:in `<module:caching>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching.rb:31:in `<module:actioncontroller>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/caching.rb:5:in `<top (required)>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/base.rb:192:in `<class:base>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/base.rb:167:in `<module:actioncontroller>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.0.1/lib/action_controller/base.rb:3:in `<top (required)>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/vendor/plugins/rpm/lib/new_relic/control/frameworks/rails.rb:127:in `install_shim' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/vendor/plugins/rpm/lib/new_relic/control.rb:137:in `init_plugin' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/vendor/plugins/rpm/init.rb:26:in `block in <class:plugin>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/plugin.rb:81:in `eval' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/plugin.rb:81:in `block in <class:plugin>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/initializable.rb:25:in `instance_exec' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/initializable.rb:25:in `run' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/initializable.rb:50:in `block in run_initializers' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/initializable.rb:49:in `each' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/initializable.rb:49:in `run_initializers' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/application.rb:134:in `initialize!' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/config/environment.rb:5:in `<top (required)>' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:225:in `block in load_dependency' 2011-05-11t03:31:25+00:00 app[worker.2]: /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in `require' 2011-05-11t03:31:25+00:00 app[worker.2]: /usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 2011-05-11t03:31:25+00:00 app[worker.2]: /usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2041:in `invoke_task' 2011-05-11t03:31:25+00:00 heroku[worker.2]: process exited 

edit:

here stack info:

stack: bamboo-mri-1.9.2 

edit 2:

here one:

2011-05-19t02:07:07+00:00 app[worker.1]: "success - end" 2011-05-19t02:07:07+00:00 app[worker.1]: [worker(host:9c66d1f3-82a1-4489-b20b-b8460a467223 pid:1)] mixpanel completed after 1.7464 2011-05-19t02:07:07+00:00 app[worker.1]: [worker(host:9c66d1f3-82a1-4489-b20b-b8460a467223 pid:1)] 2 jobs processed @ 0.1720 j/s, 0 failed ... 2011-05-19t02:07:07+00:00 app[worker.3]: rake aborted! 2011-05-19t02:07:07+00:00 app[worker.3]: sigterm 2011-05-19t02:07:07+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/builder-2.1.2/lib/blankslate.rb:107:in `append_features' 2011-05-19t02:07:07+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/devise-1.1.5/lib/devise/orm/active_record.rb:35:in `include' 2011-05-19t02:07:07+00:00 app[worker.3]: /app/.bundle/gems/ruby/1.9.1/gems/railties-3.0.1/lib/rails/engine.rb:200:in `block in <class:engine>' 2011-05-19t02:07:07+00:00 heroku[worker.3]: process exited 2011-05-18t19:07:08-07:00 heroku[worker.2]: state changed created starting 2011-05-19t02:07:08+00:00 app[worker.2]: [worker(host:df710df0-7b32-42b7-b477-b810485b5dc7 pid:1)] rpm monitoring dj worker host:df710df0-7b32-42b7-b477-b810485b5dc7 pid:1 2011-05-19t02:07:08+00:00 app[worker.2]: starting new relic agent. 2011-05-19t02:07:08+00:00 app[worker.2]: [worker(host:df710df0-7b32-42b7-b477-b810485b5dc7 pid:1)] starting job worker 2011-05-19t02:07:09+00:00 heroku[worker.2]: stopping process sigterm 2011-05-19t02:07:09+00:00 app[worker.2]: [worker(host:df710df0-7b32-42b7-b477-b810485b5dc7 pid:1)] exiting... 2011-05-19t02:07:11+00:00 heroku[worker.2]: starting process command: `rake jobs:work` 2011-05-19t02:07:14+00:00 heroku[worker.2]: process exited 2011-05-19t02:07:20+00:00 app[worker.2]: [worker(host:5d665233-0dc4-4151-aab2-a64b7656df07 pid:1)] rpm monitoring dj worker host:5d665233-0dc4-4151-aab2-a64b7656df07 pid:1 2011-05-19t02:07:20+00:00 app[worker.2]: starting new relic agent. 2011-05-19t02:07:20+00:00 app[worker.2]: [worker(host:5d665233-0dc4-4151-aab2-a64b7656df07 pid:1)] starting job worker 

the time i've ever got message "stopping process sigterm" has been when have terminated process manually - eg when running script/server , hit ctrl-c

this operating system message saying process terminated on purpose. not internal failure.

i suggest have chat heroku people whether process doing silly , terminated it.