below is the full trace.
We are using Rails 3.2.2, delayed_job (3.0.1),
delayed_job_active_record (0.3.2), thinking-sphinx (2.0.9), ts-delayed-
delta (1.1.3)
Thanks
** Invoke jobs:work (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute jobs:work
[Worker(host:prismaV2 pid:18396)] Starting job worker
rake aborted!
undefined method `join' for nil:NilClass
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/ts-delayed-
delta-1.1.3/lib/thinking_sphinx/deltas/delayed_delta/delta_job.rb:
17:in `display_name'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/backend/base.rb:72:in `name'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:210:in `handle_failed_job'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:171:in `block in run'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `block in initialize'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `execute'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:38:in `run_callbacks'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:171:in `rescue in run'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:161:in `run'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:218:in `block in reserve_and_run_one_job'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `block in initialize'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `execute'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:38:in `run_callbacks'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:218:in `reserve_and_run_one_job'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:146:in `block in work_off'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:145:in `times'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:145:in `work_off'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:117:in `block (4 levels) in start'
/home/v2/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/benchmark.rb:
310:in `realtime'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:116:in `block (3 levels) in start'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `block in initialize'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `execute'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:38:in `run_callbacks'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:113:in `block (2 levels) in start'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:112:in `loop'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:112:in `block in start'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/plugins/clear_locks.rb:7:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/plugins/clear_locks.rb:7:in `block (2 levels) in
<class:ClearLocks>'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:78:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:78:in `block (2 levels) in add'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:60:in `block in initialize'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:78:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:78:in `block in add'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:65:in `execute'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/lifecycle.rb:38:in `run_callbacks'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/worker.rb:111:in `start'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/delayed_job-3.0.1/
lib/delayed/tasks.rb:9:in `block (2 levels) in <top (required)>'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/task.rb:205:in `call'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/task.rb:205:in `block in execute'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/task.rb:200:in `each'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/task.rb:200:in `execute'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/task.rb:158:in `block in invoke_with_call_chain'
/home/v2/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in
`mon_synchronize'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/task.rb:151:in `invoke_with_call_chain'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/task.rb:144:in `invoke'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:116:in `invoke_task'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:94:in `block (2 levels) in top_level'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:94:in `each'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:94:in `block in top_level'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:133:in `standard_exception_handling'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:88:in `top_level'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:66:in `block in run'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:133:in `standard_exception_handling'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/lib/
rake/application.rb:63:in `run'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/gems/rake-0.9.2.2/bin/
rake:33:in `<top (required)>'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/bin/rake:19:in `load'
/home/v2/.rvm/gems/ruby-1.9.2-p290@pixpalace/bin/rake:19:in `<main>'
Tasks: TOP => jobs:work