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Rails 6.1.5 fails to launch rails server with config.eager_load = true #44876

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krhitoshi opened this issue Apr 12, 2022 · 4 comments
Closed

Rails 6.1.5 fails to launch rails server with config.eager_load = true #44876

krhitoshi opened this issue Apr 12, 2022 · 4 comments

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@krhitoshi
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krhitoshi commented Apr 12, 2022 •
edited

Steps to reproduce

$ docker run -it --name rails6.1 --rm ruby:3.1.1 bash
# gem install rails -v 6.1.5
# rails new myapp
# cd myapp/

# curl -sL https://deb.nodesource.com/setup_14.x | bash - && wget -O - https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && apt-get update && apt-get install -y --no-install-recommends nodejs yarn
# rails webpacker:install

# rails server -e production

Expected behavior

You can launch rails server in both development and production.
Here is the behavior of Rails 7.0.2.3 with Ruby 3.1.1.

$ docker run -it --name rails7.0 --rm ruby:3.1.1 bash
# gem install rails -v 7.0.2.3
# rails new myapp
# cd myapp/

# rails server
=> Booting Puma
=> Rails 7.0.2.3 application starting in development
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 5.6.4 (ruby 3.1.1-p18) ("Birdie's Version")
*  Min threads: 5
*  Max threads: 5
*  Environment: development
*          PID: 513
* Listening on http://127.0.0.1:3000
Use Ctrl-C to stop

# rails server -e production
=> Booting Puma
=> Rails 7.0.2.3 application starting in production
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 5.6.4 (ruby 3.1.1-p18) ("Birdie's Version")
*  Min threads: 5
*  Max threads: 5
*  Environment: production
*          PID: 525
* Listening on http://0.0.0.0:3000
Use Ctrl-C to stop

Mail.eager_autoload! and Mail.new works well on rails console.

# rails console
Loading development environment (Rails 7.0.2.3)
irb(main):001:0>  Mail.eager_autoload!
=>
{:SMTP=>"mail/network/delivery_methods/smtp",
 :FileDelivery=>"mail/network/delivery_methods/file_delivery",
 :LoggerDelivery=>"mail/network/delivery_methods/logger_delivery",
 :Sendmail=>"mail/network/delivery_methods/sendmail",
 :Exim=>"mail/network/delivery_methods/exim",
 :SMTPConnection=>"mail/network/delivery_methods/smtp_connection",
 :TestMailer=>"mail/network/delivery_methods/test_mailer",
 :POP3=>"mail/network/retriever_methods/pop3",
 :IMAP=>"mail/network/retriever_methods/imap",
 :TestRetriever=>"mail/network/retriever_methods/test_retriever",
 :UnstructuredField=>"mail/fields/unstructured_field",
 :StructuredField=>"mail/fields/structured_field",
 :OptionalField=>"mail/fields/optional_field",
 :BccField=>"mail/fields/bcc_field",
 :CcField=>"mail/fields/cc_field",
 :CommentsField=>"mail/fields/comments_field",
 :ContentDescriptionField=>"mail/fields/content_description_field",
 :ContentDispositionField=>"mail/fields/content_disposition_field",
 :ContentIdField=>"mail/fields/content_id_field",
 :ContentLocationField=>"mail/fields/content_location_field",
 :ContentTransferEncodingField=>"mail/fields/content_transfer_encoding_field",
 :ContentTypeField=>"mail/fields/content_type_field",
 :DateField=>"mail/fields/date_field",
 :FromField=>"mail/fields/from_field",
 :InReplyToField=>"mail/fields/in_reply_to_field",
 :KeywordsField=>"mail/fields/keywords_field",
 :MessageIdField=>"mail/fields/message_id_field",
 :MimeVersionField=>"mail/fields/mime_version_field",
 :ReceivedField=>"mail/fields/received_field",
 :ReferencesField=>"mail/fields/references_field",
 :ReplyToField=>"mail/fields/reply_to_field",
 :ResentBccField=>"mail/fields/resent_bcc_field",
 :ResentCcField=>"mail/fields/resent_cc_field",
 :ResentDateField=>"mail/fields/resent_date_field",
 :ResentFromField=>"mail/fields/resent_from_field",
 :ResentMessageIdField=>"mail/fields/resent_message_id_field",
 :ResentSenderField=>"mail/fields/resent_sender_field",
 :ResentToField=>"mail/fields/resent_to_field",
 :ReturnPathField=>"mail/fields/return_path_field",
 :SenderField=>"mail/fields/sender_field",
 :SubjectField=>"mail/fields/subject_field",
 :ToField=>"mail/fields/to_field",
 :Parsers=>"mail/parsers",
 :Address=>"mail/elements/address",
 :AddressList=>"mail/elements/address_list",
 :ContentDispositionElement=>"mail/elements/content_disposition_element",
 :ContentLocationElement=>"mail/elements/content_location_element",
 :ContentTransferEncodingElement=>"mail/elements/content_transfer_encoding_element",
 :ContentTypeElement=>"mail/elements/content_type_element",
 :DateTimeElement=>"mail/elements/date_time_element",
 :EnvelopeFromElement=>"mail/elements/envelope_from_element",
 :MessageIdsElement=>"mail/elements/message_ids_element",
 :MimeVersionElement=>"mail/elements/mime_version_element",
 :PhraseList=>"mail/elements/phrase_list",
 :ReceivedElement=>"mail/elements/received_element"}
irb(main):002:0> Mail.new
=> #<Mail::Message:29080, Multipart: false, Headers: >

Rails 6.1.5 with Ruby 3.0.3 worked as well, anyway.

Actual behavior

You can launch rails server in development. But not in production.

# rails server
=> Booting Puma
=> Rails 6.1.5 application starting in development
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 5.6.4 (ruby 3.1.1-p18) ("Birdie's Version")
*  Min threads: 5
*  Max threads: 5
*  Environment: development
*          PID: 2956
* Listening on http://127.0.0.1:3000
Use Ctrl-C to stop

# rails server -e production
=> Booting Puma
=> Rails 6.1.5 application starting in production
=> Run `bin/rails server --help` for more startup options
Exiting
/usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer/delivery_methods.rb:42:in `<module:ClassMethods>': uninitialized constant Mail::TestMailer (NameError)

      delegate :deliveries, :deliveries=, to: Mail::TestMailer
                                                  ^^^^^^^^^^^^
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer/delivery_methods.rb:40:in `<module:DeliveryMethods>'
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer/delivery_methods.rb:8:in `<module:ActionMailer>'
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer/delivery_methods.rb:5:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer/base.rb:438:in `<class:Base>'
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer/base.rb:437:in `<module:ActionMailer>'
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer/base.rb:12:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
	from /myapp/app/mailers/application_mailer.rb:1:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:27:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader/helpers.rb:95:in `const_get'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader/helpers.rb:95:in `cget'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader.rb:237:in `block (2 levels) in eager_load'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader/helpers.rb:26:in `block in ls'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader/helpers.rb:18:in `each_child'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader/helpers.rb:18:in `ls'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader.rb:232:in `block in eager_load'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader.rb:217:in `synchronize'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader.rb:217:in `eager_load'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader.rb:317:in `each'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/loader.rb:317:in `eager_load_all'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application/finisher.rb:133:in `block in <module:Finisher>'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:32:in `instance_exec'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:32:in `run'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:61:in `block in run_initializers'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:228:in `block in tsort_each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:431:in `each_strongly_connected_component_from'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:349:in `block in each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `call'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:226:in `tsort_each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:205:in `tsort_each'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:60:in `run_initializers'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application.rb:391:in `initialize!'
	from /myapp/config/environment.rb:5:in `<main>'
	from config.ru:3:in `require_relative'
	from config.ru:3:in `block in <main>'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:116:in `eval'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:116:in `new_from_string'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:312:in `block in start'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:379:in `handle_profiling'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:311:in `start'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:39:in `start'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:144:in `block in perform'
	from <internal:kernel>:90:in `tap'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:135:in `perform'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor/command.rb:27:in `run'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor/invocation.rb:127:in `invoke_command'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor.rb:392:in `dispatch'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/command/base.rb:69:in `perform'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/command.rb:48:in `invoke'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands.rb:18:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /myapp/bin/rails:5:in `<top (required)>'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/rails.rb:30:in `load'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/rails.rb:30:in `call'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/command.rb:7:in `call'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client.rb:30:in `run'
	from /usr/local/bundle/gems/spring-4.0.0/bin/spring:49:in `<top (required)>'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/binstub.rb:11:in `load'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/binstub.rb:11:in `<top (required)>'
	from <internal:/usr/local/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from <internal:/usr/local/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from /myapp/bin/spring:10:in `block in <top (required)>'
	from <internal:kernel>:90:in `tap'
	from /myapp/bin/spring:7:in `<top (required)>'
	from bin/rails:2:in `load'
	from bin/rails:2:in `<main>'

I found that it is possible to launch rails server even in production when I disable config.eager_load.

# apt update
# apt install vim
# vi config/environments/production.rb
  #config.eager_load = true
  config.eager_load = false

# rails server -e production
=> Booting Puma
=> Rails 6.1.5 application starting in production
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 5.6.4 (ruby 3.1.1-p18) ("Birdie's Version")
*  Min threads: 5
*  Max threads: 5
*  Environment: production
*          PID: 2945
* Listening on http://0.0.0.0:3000
Use Ctrl-C to stop

Mail module seems to work strangely.
Either Mail.eager_autoload! or Mail.new does not work well on rails console.

# rails console
Running via Spring preloader in process 2986
Loading development environment (Rails 6.1.5)
irb(main):001:0> Mail.eager_autoload!
(irb):1:in `<main>': undefined method `eager_autoload!' for Mail:Module (NoMethodError)
irb(main):002:0> Mail.new
(irb):2:in `<main>': undefined method `new' for Mail:Module (NoMethodError)

System configuration

Rails version: 6.1.5

Ruby version: 3.1.1
@eileencodes
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This sounds like a problem with Ruby 3.1 and the mail gem. We had to make these changes in #44600 because required changes aren't getting merged into mail. I see you're on 6.1.5 so this should have fixed any issues you were having. Can you try explicitly adding the net-smtp gem to your Gemfile and observe if that fixes the issue? You should be able to test this without deploying to production by changing the config.eager_load in development to true.

@skipkayhil
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Can you try explicitly adding the net-smtp gem to your Gemfile and observe if that fixes the issue?

This is almost definitely the fix. The regex in 6.1.5 swallows the net-smtp LoadError, and was fixed in #44697

@krhitoshi
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Adding net-smtp, net-pop and net-imap in Gemfile fixed this issue. Thank you!

# vi Gemfile
gem 'net-smtp'
gem 'net-pop'
gem 'net-imap'

# bundle install

# vi config/environments/development.rb
  config.eager_load = true

# rails server
=> Booting Puma
=> Rails 6.1.5 application starting in development
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 5.6.4 (ruby 3.1.1-p18) ("Birdie's Version")
*  Min threads: 5
*  Max threads: 5
*  Environment: development
*          PID: 3007
* Listening on http://127.0.0.1:3000
Use Ctrl-C to stop

Here are the errors for net-pop and net-imap.

# rails server
=> Booting Puma
=> Rails 6.1.5 application starting in development
=> Run `bin/rails server --help` for more startup options
Exiting
/usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:15:in `require': cannot load such file -- net/pop (LoadError)
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:15:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail/network/retriever_methods/pop3.rb:36:in `<class:POP3>'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail/network/retriever_methods/pop3.rb:35:in `<module:Mail>'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail/network/retriever_methods/pop3.rb:4:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:54:in `block in eager_autoload!'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:54:in `each'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:54:in `eager_autoload!'
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer.rb:61:in `eager_load!'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application/finisher.rb:134:in `each'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application/finisher.rb:134:in `block in <module:Finisher>'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:32:in `instance_exec'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:32:in `run'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:61:in `block in run_initializers'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:228:in `block in tsort_each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:431:in `each_strongly_connected_component_from'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:349:in `block in each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `call'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:226:in `tsort_each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:205:in `tsort_each'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:60:in `run_initializers'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application.rb:391:in `initialize!'
	from /myapp/config/environment.rb:5:in `<main>'
	from config.ru:3:in `require_relative'
	from config.ru:3:in `block in <main>'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:116:in `eval'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:116:in `new_from_string'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:77:in `log_to_stdout'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:37:in `start'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:144:in `block in perform'
	from <internal:kernel>:90:in `tap'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:135:in `perform'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor/command.rb:27:in `run'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor/invocation.rb:127:in `invoke_command'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor.rb:392:in `dispatch'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/command/base.rb:69:in `perform'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/command.rb:48:in `invoke'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands.rb:18:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /myapp/bin/rails:5:in `<top (required)>'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/rails.rb:30:in `load'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/rails.rb:30:in `call'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/command.rb:7:in `call'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client.rb:30:in `run'
	from /usr/local/bundle/gems/spring-4.0.0/bin/spring:49:in `<top (required)>'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/binstub.rb:11:in `load'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/binstub.rb:11:in `<top (required)>'
	from <internal:/usr/local/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from <internal:/usr/local/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from /myapp/bin/spring:10:in `block in <top (required)>'
	from <internal:kernel>:90:in `tap'
	from /myapp/bin/spring:7:in `<top (required)>'
	from bin/rails:2:in `load'
	from bin/rails:2:in `<main>'

# rails server
=> Booting Puma
=> Rails 6.1.5 application starting in development
=> Run `bin/rails server --help` for more startup options
Exiting
/usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:15:in `require': cannot load such file -- net/imap (LoadError)
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:15:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail/network/retriever_methods/imap.rb:40:in `<class:IMAP>'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail/network/retriever_methods/imap.rb:39:in `<module:Mail>'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail/network/retriever_methods/imap.rb:4:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:54:in `block in eager_autoload!'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:54:in `each'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:54:in `eager_autoload!'
	from /usr/local/bundle/gems/actionmailer-6.1.5/lib/action_mailer.rb:61:in `eager_load!'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application/finisher.rb:134:in `each'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application/finisher.rb:134:in `block in <module:Finisher>'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:32:in `instance_exec'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:32:in `run'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:61:in `block in run_initializers'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:228:in `block in tsort_each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:431:in `each_strongly_connected_component_from'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:349:in `block in each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `call'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:347:in `each_strongly_connected_component'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:226:in `tsort_each'
	from /usr/local/lib/ruby/3.1.0/tsort.rb:205:in `tsort_each'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/initializable.rb:60:in `run_initializers'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/application.rb:391:in `initialize!'
	from /myapp/config/environment.rb:5:in `<main>'
	from config.ru:3:in `require_relative'
	from config.ru:3:in `block in <main>'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:116:in `eval'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:116:in `new_from_string'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
	from /usr/local/bundle/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:77:in `log_to_stdout'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:37:in `start'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:144:in `block in perform'
	from <internal:kernel>:90:in `tap'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands/server/server_command.rb:135:in `perform'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor/command.rb:27:in `run'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor/invocation.rb:127:in `invoke_command'
	from /usr/local/bundle/gems/thor-1.2.1/lib/thor.rb:392:in `dispatch'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/command/base.rb:69:in `perform'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/command.rb:48:in `invoke'
	from /usr/local/bundle/gems/railties-6.1.5/lib/rails/commands.rb:18:in `<main>'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
	from /myapp/bin/rails:5:in `<top (required)>'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/rails.rb:30:in `load'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/rails.rb:30:in `call'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client/command.rb:7:in `call'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/client.rb:30:in `run'
	from /usr/local/bundle/gems/spring-4.0.0/bin/spring:49:in `<top (required)>'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/binstub.rb:11:in `load'
	from /usr/local/bundle/gems/spring-4.0.0/lib/spring/binstub.rb:11:in `<top (required)>'
	from <internal:/usr/local/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from <internal:/usr/local/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from /myapp/bin/spring:10:in `block in <top (required)>'
	from <internal:kernel>:90:in `tap'
	from /myapp/bin/spring:7:in `<top (required)>'
	from bin/rails:2:in `load'
	from bin/rails:2:in `<main>'

@krhitoshi
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krhitoshi commented Apr 13, 2022 •
edited

I tried the branch 6-1-stable including the fix #44697.
I got an expected error like this.
It helps us understand what is wrong.
Thank you again!

# rails server
You don't have net-smtp installed in your application. Please add it to your Gemfile and run bundle install
=> Booting Puma
=> Rails 6.1.5 application starting in development
=> Run `bin/rails server --help` for more startup options
You don't have net-smtp installed in your application. Please add it to your Gemfile and run bundle install
Exiting
/usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:15:in `require': cannot load such file -- net/smtp (LoadError)
	from /usr/local/bundle/gems/bootsnap-1.11.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:15:in `require'
	from /usr/local/bundle/gems/zeitwerk-2.5.4/lib/zeitwerk/kernel.rb:35:in `require'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:9:in `<module:Mail>'
	from /usr/local/bundle/gems/mail-2.7.1/lib/mail.rb:3:in `<main>'

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@krhitoshi @eileencodes @skipkayhil