DEA backtrace when warden's unix socket fails to accept connections.

warden-connection-error.json

{
   "thread_id" : 16564360,
   "source" : "Staging",
   "file" : "/var/vcap/packages/dea_next/lib/dea/staging/staging_task.rb",
   "fiber_id" : 33189140,
   "data" : {
      "backtrace" : [
         "/var/vcap/packages/dea_next/vendor/bundle/ruby/1.9.1/gems/eventmachine-1.0.3/lib/eventmachine.rb:667:in `connect_unix_server'",
         "/var/vcap/packages/dea_next/vendor/bundle/ruby/1.9.1/gems/eventmachine-1.0.3/lib/eventmachine.rb:667:in `bind_connect'",
         "/var/vcap/packages/dea_next/vendor/bundle/ruby/1.9.1/gems/eventmachine-1.0.3/lib/eventmachine.rb:640:in `connect'",
         "/var/vcap/packages/dea_next/vendor/cache/warden-517d065bfbbb/em-warden-client/lib/em/warden/client.rb:25:in `connect'",
         "/var/vcap/packages/dea_next/lib/container/warden_client_provider.rb:16:in `get'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:215:in `client'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:207:in `call'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:166:in `block in new_container_with_bind_mounts'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:48:in `call'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:48:in `with_em'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:153:in `new_container_with_bind_mounts'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:144:in `block in create_container'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:48:in `call'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:48:in `with_em'",
         "/var/vcap/packages/dea_next/lib/container/container.rb:143:in `create_container'",
         "/var/vcap/packages/dea_next/lib/dea/staging/staging_task.rb:531:in `resolve_staging_setup'",
         "/var/vcap/packages/dea_next/lib/dea/staging/staging_task.rb:47:in `block in start'",
         "/var/vcap/packages/dea_next/lib/dea/promise.rb:80:in `call'",
         "/var/vcap/packages/dea_next/lib/dea/promise.rb:80:in `block in run'"
      ],
      "app_guid" : "67ba7825-6867-4207-a6e4-ffbecfdab6c7",
      "error" : "no connection",
      "task_id" : "1d0fe0cd865345b3b4543f08c69b269e"
   },
   "message" : "staging.task.failed",
   "timestamp" : 1392844164.06946,
   "log_level" : "info",
   "process_id" : 32385,
   "method" : "block in start",
   "lineno" : 55
}