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全部我的延遲作業在服務器上生產沒有明顯原因失敗。我嘗試重新啓動，刪除所有以前的工作，並再次啓動職業工作者，但沒有任何工作。延遲作業在服務器上生產失敗
懷疑它必須是一個Capistrano的問題，我手動通過服務器上的SSH跑rake jobs:work但我得到了同樣的錯誤：
[email protected]:~/apps/instano-api/current$ rake jobs:work
[Worker(host:ip-172-31-35-0 pid:22174)] Starting job worker
[Worker(host:ip-172-31-35-0 pid:22174)] Job InstanoMailer.new_quote (id=73) RUNNING
[Worker(host:ip-172-31-35-0 pid:22174)] Job InstanoMailer.new_quote (id=73) FAILED (3 prior attempts) with NameError: undefined method `error' for class `Class'
我用ExceptionNotifier寶石，從中我得到了下面的堆棧跟蹤（但這些行都不是我的應用程序代碼）：
A NameError occurred in background at 2014-12-17 02:43:21 +0530 :
undefined method `error' for class `Class'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/performable_method.rb:7:in `method'
-------------------------------
Backtrace:
-------------------------------
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/performable_method.rb:7:in `method'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/performable_method.rb:7:in `method'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/backend/base.rb:113:in `hook'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/backend/base.rb:97:in `rescue in block in invoke_job'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/backend/base.rb:101:in `block in invoke_job'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `block in initialize'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `execute'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/backend/base.rb:91:in `invoke_job'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:199:in `block (2 levels) in run'
/home/ubuntu/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/timeout.rb:82:in `block in timeout'
/home/ubuntu/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/timeout.rb:70:in `catch'
/home/ubuntu/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/timeout.rb:70:in `timeout'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:199:in `block in run'
/home/ubuntu/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:198:in `run'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:275:in `block in reserve_and_run_one_job'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `block in initialize'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `execute'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:275:in `reserve_and_run_one_job'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:182:in `block in work_off'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:181:in `times'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:181:in `work_off'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:146:in `block (4 levels) in start'
/home/ubuntu/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:145:in `block (3 levels) in start'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `block in initialize'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `execute'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:144:in `block (2 levels) in start'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:143:in `loop'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:143:in `block in start'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/plugins/clear_locks.rb:7:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/plugins/clear_locks.rb:7:in `block (2 levels) in <class:ClearLocks>'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:79:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:79:in `block (2 levels) in add'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:61:in `block in initialize'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:79:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:79:in `block in add'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:66:in `execute'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/lifecycle.rb:40:in `run_callbacks'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/worker.rb:142:in `start'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/command.rb:124:in `run'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/command.rb:112:in `block in run_process'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/application.rb:255:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/application.rb:255:in `block in start_proc'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/daemonize.rb:82:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/daemonize.rb:82:in `call_as_daemon'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/application.rb:259:in `start_proc'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/application.rb:296:in `start'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/controller.rb:70:in `run'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons.rb:197:in `block in run_proc'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/cmdline.rb:109:in `call'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons/cmdline.rb:109:in `catch_exceptions'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/daemons-1.1.9/lib/daemons.rb:196:in `run_proc'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/command.rb:110:in `run_process'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/command.rb:91:in `block in daemonize'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/command.rb:89:in `times'
/home/ubuntu/.rvm/gems/ruby-2.1.0/gems/delayed_job-4.0.4/lib/delayed/command.rb:89:in `daemonize'
bin/delayed_job:5:in `<main>'
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Data:
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* data: {}