使用 Sidekiq 时由对等方重置连接
Connection Reset By Peer when using Sidekiq
我最近在我的 Rails 应用程序中安装了 Sidekiq gem 以在后台进程中发送电子邮件。然而，我还没有收到一封要发送的电子邮件，到目前为止，Stack Overflow 搜索让我两手空空。我不太了解 Sidekiq 或 Redis，所以部分问题可能是我真的不知道要搜索什么或如何解释错误消息。在安装 Sidekiq 之前，电子邮件可以使用 .deliver 方法正常发送。
当它尝试再次发送时，我收到一条错误消息 "Connection reset by peer"，后跟 "End of file reached"。还有一条包含 'sysread_nonblock' 并提到 openssl 目录的警告消息。
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: Errno::ECONNRESET: Connection reset by peer
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: .../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/openssl/buffering.rb:182:in `sysread_nonblock'
这是我的代码。它基于 Rails 4.2.3 和 Ruby 2.2.1.
Gemfile
gem 'redis'
gem 'sidekiq'
Application.rb
config.active_job.queue_adapter = :sidekiq
config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
address: 'smtp.office365.com',
port: 587,
authentication: :login,
user_name: ENV['office_email'],
password: ENV['office_pw'],
domain: 'example.com',
enable_starttls_auto: true
}
问题控制器
QuestionMailer.question_email.deliver_later!
问题邮件
default from: "info@example.com"
def question_email
mail(to: "example@gmail.com", subject: 'Question Email')
end
当我启动本地服务器时，我执行以下操作：
启动Redis服务器
redis-server /usr/local/etc/redis.conf
启动 Sidekiq
bundle exec sidekiq -q default -q mailers
启动Rails服务器（带工头）
foreman run rails server
这是我的完整日志：
2015-09-13T01:59:17.861Z 1400 TID-owidkv8b8 ActionMailer::DeliveryJob JID-2fb2df2aac71bb896b05c7f1 INFO: start
2015-09-13T01:59:23.750Z 1400 TID-owidkv8b8 ActionMailer::DeliveryJob JID-2fb2df2aac71bb896b05c7f1 INFO: fail: 5.889 sec
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: {"class"=>"ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper", "wrapped"=>"ActionMailer::DeliveryJob", "queue"=>"mailers", "args"=>[{"job_class"=>"ActionMailer::DeliveryJob", "job_id"=>"708d1ee4-7d66-493e-8b9f-0fefa7838262", "queue_name"=>"mailers", "arguments"=>["QuestionMailer", "question_email", "deliver_now!"]}], "retry"=>true, "jid"=>"2fb2df2aac71bb896b05c7f1", "created_at"=>1442109557.85662, "enqueued_at"=>1442109557.8567731, "error_message"=>"Connection reset by peer", "error_class"=>"Errno::ECONNRESET", "failed_at"=>1442109563.749469, "retry_count"=>0}
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: Errno::ECONNRESET: Connection reset by peer
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: .../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/openssl/buffering.rb:182:in `sysread_nonblock'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/openssl/buffering.rb:182:in `read_nonblock'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/protocol.rb:153:in `rbuf_fill'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/protocol.rb:134:in `readuntil'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/protocol.rb:144:in `readline'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:945:in `recv_response'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:931:in `block in getok'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:955:in `critical'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:929:in `getok'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:923:in `quit'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:616:in `do_finish'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:523:in `ensure in start'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:523:in `start'
.../.rvm/gems/ruby-2.2.1/gems/mail-2.6.3/lib/mail/network/delivery_methods/smtp.rb:112:in `deliver!'
.../.rvm/gems/ruby-2.2.1/gems/mail-2.6.3/lib/mail/message.rb:252:in `deliver!'
.../.rvm/gems/ruby-2.2.1/gems/actionmailer-4.2.3/lib/action_mailer/message_delivery.rb:77:in `deliver_now!'
.../.rvm/gems/ruby-2.2.1/gems/actionmailer-4.2.3/lib/action_mailer/delivery_job.rb:10:in `perform'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/execution.rb:32:in `block in perform_now'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:553:in `block (2 levels) in compile'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:496:in `block (2 levels) in around'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:341:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:341:in `block (2 levels) in simple'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:23:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:23:in `block (4 levels) in <module:Logging>'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `block in instrument'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `instrument'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:22:in `block (3 levels) in <module:Logging>'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:43:in `block in tag_logger'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `block in tagged'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:26:in `tagged'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `tagged'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:43:in `tag_logger'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:19:in `block (2 levels) in <module:Logging>'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:439:in `instance_exec'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:439:in `block in make_lambda'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:340:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:340:in `block in simple'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:495:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:495:in `block in around'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:88:in `run_callbacks'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/execution.rb:31:in `perform_now'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/execution.rb:21:in `execute'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/queue_adapters/sidekiq_adapter.rb:42:in `perform'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:75:in `execute_job'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:52:in `block (2 levels) in process'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:127:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/active_record.rb:6:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/retry_jobs.rb:74:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/logging.rb:11:in `block in call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/logging.rb:30:in `with_context'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/logging.rb:7:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:132:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:132:in `invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:51:in `block in process'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:98:in `stats'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:50:in `process'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/calls.rb:28:in `public_send'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/calls.rb:28:in `dispatch'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/call/async.rb:7:in `dispatch'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/cell.rb:50:in `block in dispatch'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/cell.rb:76:in `block in task'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/actor.rb:339:in `block in task'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/task.rb:44:in `block in initialize'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/task/fibered.rb:14:in `block in create'
非常感谢您提供的任何见解！
对于遇到类似问题的任何人，我通过简单地将此行添加到 config/environments/development.rb
来修复错误
config.action_mailer.perform_deliveries = true
这默认设置为 false，因为通常您不想在开发模式下实际发送电子邮件。我不确定为什么 deliver_now 即使设置为 false 也能正常工作，但你能做什么...
我最近在我的 Rails 应用程序中安装了 Sidekiq gem 以在后台进程中发送电子邮件。然而，我还没有收到一封要发送的电子邮件，到目前为止，Stack Overflow 搜索让我两手空空。我不太了解 Sidekiq 或 Redis，所以部分问题可能是我真的不知道要搜索什么或如何解释错误消息。在安装 Sidekiq 之前，电子邮件可以使用 .deliver 方法正常发送。
当它尝试再次发送时，我收到一条错误消息 "Connection reset by peer"，后跟 "End of file reached"。还有一条包含 'sysread_nonblock' 并提到 openssl 目录的警告消息。
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: Errno::ECONNRESET: Connection reset by peer
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: .../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/openssl/buffering.rb:182:in `sysread_nonblock'
这是我的代码。它基于 Rails 4.2.3 和 Ruby 2.2.1.
Gemfile
gem 'redis'
gem 'sidekiq'
Application.rb
config.active_job.queue_adapter = :sidekiq
config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
address: 'smtp.office365.com',
port: 587,
authentication: :login,
user_name: ENV['office_email'],
password: ENV['office_pw'],
domain: 'example.com',
enable_starttls_auto: true
}
问题控制器
QuestionMailer.question_email.deliver_later!
问题邮件
default from: "info@example.com"
def question_email
mail(to: "example@gmail.com", subject: 'Question Email')
end
当我启动本地服务器时，我执行以下操作：
启动Redis服务器
redis-server /usr/local/etc/redis.conf
启动 Sidekiq
bundle exec sidekiq -q default -q mailers
启动Rails服务器（带工头）
foreman run rails server
这是我的完整日志：
2015-09-13T01:59:17.861Z 1400 TID-owidkv8b8 ActionMailer::DeliveryJob JID-2fb2df2aac71bb896b05c7f1 INFO: start
2015-09-13T01:59:23.750Z 1400 TID-owidkv8b8 ActionMailer::DeliveryJob JID-2fb2df2aac71bb896b05c7f1 INFO: fail: 5.889 sec
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: {"class"=>"ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper", "wrapped"=>"ActionMailer::DeliveryJob", "queue"=>"mailers", "args"=>[{"job_class"=>"ActionMailer::DeliveryJob", "job_id"=>"708d1ee4-7d66-493e-8b9f-0fefa7838262", "queue_name"=>"mailers", "arguments"=>["QuestionMailer", "question_email", "deliver_now!"]}], "retry"=>true, "jid"=>"2fb2df2aac71bb896b05c7f1", "created_at"=>1442109557.85662, "enqueued_at"=>1442109557.8567731, "error_message"=>"Connection reset by peer", "error_class"=>"Errno::ECONNRESET", "failed_at"=>1442109563.749469, "retry_count"=>0}
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: Errno::ECONNRESET: Connection reset by peer
2015-09-13T01:59:23.751Z 1400 TID-owidkv8b8 WARN: .../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/openssl/buffering.rb:182:in `sysread_nonblock'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/openssl/buffering.rb:182:in `read_nonblock'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/protocol.rb:153:in `rbuf_fill'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/protocol.rb:134:in `readuntil'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/protocol.rb:144:in `readline'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:945:in `recv_response'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:931:in `block in getok'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:955:in `critical'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:929:in `getok'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:923:in `quit'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:616:in `do_finish'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:523:in `ensure in start'
.../.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/net/smtp.rb:523:in `start'
.../.rvm/gems/ruby-2.2.1/gems/mail-2.6.3/lib/mail/network/delivery_methods/smtp.rb:112:in `deliver!'
.../.rvm/gems/ruby-2.2.1/gems/mail-2.6.3/lib/mail/message.rb:252:in `deliver!'
.../.rvm/gems/ruby-2.2.1/gems/actionmailer-4.2.3/lib/action_mailer/message_delivery.rb:77:in `deliver_now!'
.../.rvm/gems/ruby-2.2.1/gems/actionmailer-4.2.3/lib/action_mailer/delivery_job.rb:10:in `perform'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/execution.rb:32:in `block in perform_now'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:115:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:553:in `block (2 levels) in compile'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:496:in `block (2 levels) in around'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:341:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:341:in `block (2 levels) in simple'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:23:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:23:in `block (4 levels) in <module:Logging>'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `block in instrument'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/notifications.rb:164:in `instrument'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:22:in `block (3 levels) in <module:Logging>'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:43:in `block in tag_logger'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `block in tagged'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:26:in `tagged'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/tagged_logging.rb:68:in `tagged'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:43:in `tag_logger'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/logging.rb:19:in `block (2 levels) in <module:Logging>'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:439:in `instance_exec'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:439:in `block in make_lambda'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:340:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:340:in `block in simple'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:495:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:495:in `block in around'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:503:in `call'
.../.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.3/lib/active_support/callbacks.rb:88:in `run_callbacks'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/execution.rb:31:in `perform_now'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/execution.rb:21:in `execute'
.../.rvm/gems/ruby-2.2.1/gems/activejob-4.2.3/lib/active_job/queue_adapters/sidekiq_adapter.rb:42:in `perform'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:75:in `execute_job'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:52:in `block (2 levels) in process'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:127:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/active_record.rb:6:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/retry_jobs.rb:74:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/logging.rb:11:in `block in call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/logging.rb:30:in `with_context'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/server/logging.rb:7:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:132:in `call'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/middleware/chain.rb:132:in `invoke'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:51:in `block in process'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:98:in `stats'
.../.rvm/gems/ruby-2.2.1/gems/sidekiq-3.5.0/lib/sidekiq/processor.rb:50:in `process'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/calls.rb:28:in `public_send'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/calls.rb:28:in `dispatch'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/call/async.rb:7:in `dispatch'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/cell.rb:50:in `block in dispatch'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/cell.rb:76:in `block in task'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/actor.rb:339:in `block in task'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/task.rb:44:in `block in initialize'
.../.rvm/gems/ruby-2.2.1/gems/celluloid-0.17.1.2/lib/celluloid/task/fibered.rb:14:in `block in create'
非常感谢您提供的任何见解！
对于遇到类似问题的任何人，我通过简单地将此行添加到 config/environments/development.rb
来修复错误config.action_mailer.perform_deliveries = true
这默认设置为 false，因为通常您不想在开发模式下实际发送电子邮件。我不确定为什么 deliver_now 即使设置为 false 也能正常工作，但你能做什么...