JRuby / Warbler does not load such a file - bundler / dep_proxy

Question

I have a large rails application that has been successfully converted to use JRuby and it runs locally without any problems bundle exec rails s -b 0.0.0.0 .

Now I am trying to create a deployable WAR file using the following:

bundle exec warble executable war

This succeeds without error, but when started with:

java -jar application.war

It loads, and then after a few seconds it spits out this error:

 2016-06-28 11:48:16.544:INFO::main: Logging initialized @228ms 2016-06-28 11:48:16.553:INFO:oejr.Runner:main: Runner 2016-06-28 11:48:16.698:INFO:oejs.Server:main: jetty-9.2.9.v20150224 2016-06-28 11:48:32.680:WARN:oeja.AnnotationConfiguration:main: ServletContainerInitializers: detected. Class hierarchy: empty 2016-06-28 11:48:33.692:INFO:/:main: INFO: jruby 9.1.2.0 (2.3.0) 2016-05-26 7357c8f Java HotSpot(TM) 64-Bit Server VM 25.45-b02 on 1.8.0_45-b14 +jit [darwin-x86_64] 2016-06-28 11:48:33.694:INFO:/:main: INFO: using a shared (threadsafe!) runtime org.jruby.exceptions.RaiseException: (LoadError) no such file to load -- bundler/dep_proxy at RUBY.block in expand_dependencies(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:630) at org.jruby.RubyArray.each(org/jruby/RubyArray.java:1593) at RUBY.block in expand_dependencies(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:629) at org.jruby.RubyArray.each(org/jruby/RubyArray.java:1593) at RUBY.expand_dependencies(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:626) at RUBY.converge_locked_specs(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:594) at RUBY.resolve(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:195) at RUBY.specs(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:140) at RUBY.specs_for(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:185) at RUBY.requested_specs(uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:174) at RUBY.requested_specs(uri:classloader:/gems/bundler-1.12.5/lib/bundler/environment.rb:19) at RUBY.setup(uri:classloader:/gems/bundler-1.12.5/lib/bundler/runtime.rb:14) at RUBY.setup(uri:classloader:/gems/bundler-1.12.5/lib/bundler.rb:95) at RUBY.<top>(uri:classloader:/gems/bundler-1.12.5/lib/bundler/setup.rb:9) at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:944) at RUBY.(root)(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:1) at RUBY.<top>(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:133) at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:944) at RUBY.(root)(/private/var/folders/9v/9b6v35h55nl94trls0l52h4c0000gn/T/jetty-0.0.0.0-8080-application.war-_-any-4553071680754868493.dir/webapp/WEB-INF/config/boot.rb:3) at RUBY.(root)(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:1) at RUBY.require(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:55) at RUBY.<top>(uri:classloader:/jruby/rack/rails/environment3.rb:23) 

It gets stuck, unable to download bundler / dep_proxy, and Google does not lead to the search for similar problems. I changed the warbler configuration file, but the result was the same problem.

Ruby JRuby was installed with rbenv .

Stack Information:

 $ jruby -v jruby 9.1.2.0 (2.3.0) 2016-05-26 7357c8f Java HotSpot(TM) 64-Bit Server VM 25.45-b02 on 1.8.0_45-b14 +jit [darwin-x86_64] $ bundle env Environment Bundler 1.12.5 Rubygems 2.6.4 Ruby 2.3.0p0 (2016-05-26 revision 52539) [java] Git 2.9.0 Gemfile source 'https://rubygems.org' ruby '2.3.0', :engine => 'jruby', :engine_version => '9.1.2.0' gem 'rails', '4.2.6' gem 'sass-rails', '~> 5.0' gem 'bourbon' gem 'font-awesome-sass' gem 'uglifier', '>= 1.3.0' gem 'jquery-rails' gem 'jquery-turbolinks' gem 'turbolinks' gem 'jbuilder', '~> 2.0' gem 'country_select' gem 'devise', '3.5.3' gem 'devise-i18n-views' gem 'devise-encryptable' gem 'devise_security_extension' gem 'cancancan' gem 'rolify' gem 'carrierwave' gem 'carrierwave-bombshelter' gem 'mini_magick' gem 'file_validators', '2.0.2' gem 'gretel' gem 'font-awesome-rails' gem 'kaminari' gem 'pg_search' gem 'responders' gem 'date_validator' gem 'validates_timeliness', '~> 4.0' gem 'roo', '~> 2.3.2' gem 'lipsum', :require => false gem 'faker', :require => false gem 'pushmeup', :require => false gem 'rack-attack' gem 'barby', :require => false gem 'prawn', :require => false gem 'rest-client', :require => false gem 'geokit', :require => false gem 'text', :require => false gem 'savon', :require => false gem 'plugg' gem 'postmark-rails', '~> 0.12.0' gem 'breadcrumbs_on_rails' platforms :ruby do gem 'pg' gem 'therubyracer' end platforms :jruby do gem 'jruby-jars' gem 'jruby-openssl' gem 'jruby-rack' gem 'activerecord-jdbcpostgresql-adapter' gem 'puma' gem 'therubyrhino' group :development, :test do gem 'warbler' end end group :development, :test do #gem 'spring' gem 'randumb' gem "activerecord-import", ">= 0.4.0", :require => false gem 'factory_girl' gem 'require_all' gem 'rails_real_favicon' gem 'i18n-tasks', '~> 0.9.4' gem 'i18n_generators' # Code Assessment Tools gem 'i15r', '~> 0.5.1' gem 'brakeman', :require => false gem 'bundler-audit' gem 'flog' gem 'rails_best_practices' end group :production do gem 'activerecord_url_connections' gem 'le' gem 'redis-rails' gem 'rack-timeout' gem 'rack-throttle' gem 'rack-cache', :require => 'rack/cache' end group :doc do gem 'sdoc', '~> 0.4.0' end Gemfile.lock GEM remote: https://rubygems.org/ specs: actionmailer (4.2.6) actionpack (= 4.2.6) actionview (= 4.2.6) activejob (= 4.2.6) mail (~> 2.5, >= 2.5.4) rails-dom-testing (~> 1.0, >= 1.0.5) actionpack (4.2.6) actionview (= 4.2.6) activesupport (= 4.2.6) rack (~> 1.6) rack-test (~> 0.6.2) rails-dom-testing (~> 1.0, >= 1.0.5) rails-html-sanitizer (~> 1.0, >= 1.0.2) actionview (4.2.6) activesupport (= 4.2.6) builder (~> 3.1) erubis (~> 2.7.0) rails-dom-testing (~> 1.0, >= 1.0.5) rails-html-sanitizer (~> 1.0, >= 1.0.2) activejob (4.2.6) activesupport (= 4.2.6) globalid (>= 0.3.0) activemodel (4.2.6) activesupport (= 4.2.6) builder (~> 3.1) activerecord (4.2.6) activemodel (= 4.2.6) activesupport (= 4.2.6) arel (~> 6.0) activerecord-import (0.14.1) activerecord (>= 3.2) activerecord-jdbc-adapter (1.3.20) activerecord (>= 2.2) activerecord-jdbcpostgresql-adapter (1.3.20) activerecord-jdbc-adapter (~> 1.3.20) jdbc-postgres (>= 9.1) activerecord_url_connections (0.0.7) activerecord activesupport (4.2.6) i18n (~> 0.7) json (~> 1.7, >= 1.7.7) minitest (~> 5.1) thread_safe (~> 0.3, >= 0.3.4) tzinfo (~> 1.1) addressable (2.4.0) akami (1.3.1) gyoku (>= 0.4.0) nokogiri arel (6.0.3) ast (2.3.0) barby (0.6.4) bcrypt (3.1.11-java) bourbon (4.2.7) sass (~> 3.4) thor (~> 0.19) brakeman (3.3.2) breadcrumbs_on_rails (2.3.1) builder (3.2.2) bundler-audit (0.5.0) bundler (~> 1.2) thor (~> 0.18) cancancan (1.15.0) carrierwave (0.11.2) activemodel (>= 3.2.0) activesupport (>= 3.2.0) json (>= 1.7) mime-types (>= 1.16) mimemagic (>= 0.3.0) carrierwave-bombshelter (0.2.2) activesupport (>= 3.2.0) carrierwave fastimage code_analyzer (0.4.5) sexp_processor coffee-rails (4.1.1) coffee-script (>= 2.2.0) railties (>= 4.0.0, < 5.1.x) coffee-script (2.4.1) coffee-script-source execjs coffee-script-source (1.10.0) concurrent-ruby (1.0.2-java) countries (1.2.5) currencies (~> 0.4.2) i18n_data (~> 0.7.0) country_select (2.5.2) countries (~> 1.2.0) sort_alphabetical (~> 1.0) currencies (0.4.2) date_validator (0.9.0) activemodel activesupport devise (3.5.3) bcrypt (~> 3.0) orm_adapter (~> 0.1) railties (>= 3.2.6, < 5) responders thread_safe (~> 0.1) warden (~> 1.2.3) devise-encryptable (0.2.0) devise (>= 2.1.0) devise-i18n-views (0.3.7) devise_security_extension (0.10.0) devise (>= 3.0.0, < 4.0) railties (>= 3.2.6, < 5.0) domain_name (0.5.20160615) unf (>= 0.0.5, < 1.0.0) easy_translate (0.5.0) json thread thread_safe erubis (2.7.0) execjs (2.7.0) factory_girl (4.7.0) activesupport (>= 3.0.0) faker (1.6.3) i18n (~> 0.5) fastimage (2.0.0) addressable (~> 2) file_validators (2.0.2) activemodel (>= 3.0) mime-types (>= 1.0) flog (4.4.0) path_expander (~> 1.0) ruby_parser (~> 3.1, > 3.1.0) sexp_processor (~> 4.4) font-awesome-rails (4.6.3.1) railties (>= 3.2, < 5.1) font-awesome-sass (4.6.2) sass (>= 3.2) geokit (1.10.0) globalid (0.3.6) activesupport (>= 4.1.0) gretel (3.0.8) rails (>= 3.2.0) gyoku (1.3.1) builder (>= 2.1.2) highline (1.7.8) http-cookie (1.0.2) domain_name (~> 0.5) httparty (0.13.7) json (~> 1.8) multi_xml (>= 0.5.2) httpi (2.4.2) rack socksify i15r (0.5.5) i18n (0.7.0) i18n-tasks (0.9.5) activesupport (>= 4.0.2) ast (>= 2.1.0) easy_translate (>= 0.5.0) erubis highline (>= 1.7.3) i18n parser (>= 2.2.3.0) term-ansicolor (>= 1.3.2) terminal-table (>= 1.5.1) i18n_data (0.7.0) i18n_generators (2.1.1) rails (>= 3.0.0) jbuilder (2.5.0) activesupport (>= 3.0.0, < 5.1) multi_json (~> 1.2) jdbc-postgres (9.4.1206) jquery-rails (4.1.1) rails-dom-testing (>= 1, < 3) railties (>= 4.2.0) thor (>= 0.14, < 2.0) jquery-turbolinks (2.1.0) railties (>= 3.1.0) turbolinks jruby-jars (9.1.2.0) jruby-openssl (0.9.17-java) jruby-rack (1.1.20) json (1.8.3-java) kaminari (0.17.0) actionpack (>= 3.0.0) activesupport (>= 3.0.0) le (2.7.2) lipsum (1.2.0) nokogiri loofah (2.0.3) nokogiri (>= 1.5.9) mail (2.6.4) mime-types (>= 1.16, < 4) mime-types (2.99.2) mimemagic (0.3.1) mini_magick (4.5.1) minitest (5.9.0) multi_json (1.12.1) multi_xml (0.5.5) netrc (0.11.0) nokogiri (1.6.8-java) nori (2.6.0) orm_adapter (0.5.0) parser (2.3.1.2) ast (~> 2.2) path_expander (1.0.0) pdf-core (0.6.1) pg_search (1.0.6) activerecord (>= 3.1) activesupport (>= 3.1) arel plugg (0.0.4) postmark (1.7.1) json rake postmark-rails (0.12.0) actionmailer (>= 3.0.0) postmark (~> 1.7.0) prawn (2.1.0) pdf-core (~> 0.6.1) ttfunk (~> 1.4.0) puma (3.4.0-java) pushmeup (0.3.0) httparty json rack (1.6.4) rack-attack (4.4.1) rack rack-cache (1.6.1) rack (>= 0.4) rack-test (0.6.3) rack (>= 1.0) rack-throttle (0.4.0) rack (>= 1.0.0) rack-timeout (0.4.2) rails (4.2.6) actionmailer (= 4.2.6) actionpack (= 4.2.6) actionview (= 4.2.6) activejob (= 4.2.6) activemodel (= 4.2.6) activerecord (= 4.2.6) activesupport (= 4.2.6) bundler (>= 1.3.0, < 2.0) railties (= 4.2.6) sprockets-rails rails-deprecated_sanitizer (1.0.3) activesupport (>= 4.2.0.alpha) rails-dom-testing (1.0.7) activesupport (>= 4.2.0.beta, < 5.0) nokogiri (~> 1.6.0) rails-deprecated_sanitizer (>= 1.0.1) rails-html-sanitizer (1.0.3) loofah (~> 2.0) rails_best_practices (1.16.0) activesupport code_analyzer (>= 0.4.3) erubis i18n json require_all ruby-progressbar rails_real_favicon (0.0.3) json (~> 1.7) rails (>= 3.1, < 5) rest-client (~> 1.8) rubyzip (~> 1) railties (4.2.6) actionpack (= 4.2.6) activesupport (= 4.2.6) rake (>= 0.8.7) thor (>= 0.18.1, < 2.0) rake (11.2.2) randumb (0.5.0) activerecord (>= 3.0.0) activesupport (>= 3.0.0) rake rdoc (4.2.2) json (~> 1.4) redis (3.3.0) redis-actionpack (4.0.1) actionpack (~> 4) redis-rack (~> 1.5.0) redis-store (~> 1.1.0) redis-activesupport (4.1.5) activesupport (>= 3, < 5) redis-store (~> 1.1.0) redis-rack (1.5.0) rack (~> 1.5) redis-store (~> 1.1.0) redis-rails (4.0.0) redis-actionpack (~> 4) redis-activesupport (~> 4) redis-store (~> 1.1.0) redis-store (1.1.7) redis (>= 2.2) require_all (1.3.3) responders (2.2.0) railties (>= 4.2.0, < 5.1) rest-client (1.8.0) http-cookie (>= 1.0.2, < 2.0) mime-types (>= 1.16, < 3.0) netrc (~> 0.7) rolify (5.1.0) roo (2.3.2) nokogiri (~> 1) rubyzip (~> 1.1, < 2.0.0) ruby-progressbar (1.8.1) ruby_parser (3.8.2) sexp_processor (~> 4.1) rubyzip (1.2.0) sass (3.4.22) sass-rails (5.0.4) railties (>= 4.0.0, < 5.0) sass (~> 3.1) sprockets (>= 2.8, < 4.0) sprockets-rails (>= 2.0, < 4.0) tilt (>= 1.1, < 3) savon (2.11.1) akami (~> 1.2) builder (>= 2.1.2) gyoku (~> 1.2) httpi (~> 2.3) nokogiri (>= 1.4.0) nori (~> 2.4) wasabi (~> 3.4) sdoc (0.4.1) json (~> 1.7, >= 1.7.7) rdoc (~> 4.0) sexp_processor (4.7.0) socksify (1.7.0) sort_alphabetical (1.0.2) unicode_utils (>= 1.2.2) sprockets (3.6.2) concurrent-ruby (~> 1.0) rack (> 1, < 3) sprockets-rails (3.1.0) actionpack (>= 4.0) activesupport (>= 4.0) sprockets (>= 3.0.0) term-ansicolor (1.3.2) tins (~> 1.0) terminal-table (1.6.0) text (1.3.1) therubyrhino (2.0.4) therubyrhino_jar (>= 1.7.3) therubyrhino_jar (1.7.6) thor (0.19.1) thread (0.2.2) thread_safe (0.3.5-java) tilt (2.0.5) timeliness (0.3.8) tins (1.10.2) ttfunk (1.4.0) turbolinks (2.5.3) coffee-rails tzinfo (1.2.2) thread_safe (~> 0.1) uglifier (3.0.0) execjs (>= 0.3.0, < 3) unf (0.1.4-java) unicode_utils (1.4.0) validates_timeliness (4.0.2) timeliness (~> 0.3.7) warbler (2.0.3) jruby-jars (>= 9.0.0.0) jruby-rack (>= 1.1.1, < 1.3) rake (>= 10.1.0) rubyzip (~> 1.0, < 1.4) warden (1.2.6) rack (>= 1.0) wasabi (3.5.0) httpi (~> 2.0) nokogiri (>= 1.4.2) PLATFORMS java DEPENDENCIES activerecord-import (>= 0.4.0) activerecord-jdbcpostgresql-adapter activerecord_url_connections barby bourbon brakeman breadcrumbs_on_rails bundler-audit cancancan carrierwave carrierwave-bombshelter country_select date_validator devise (= 3.5.3) devise-encryptable devise-i18n-views devise_security_extension factory_girl faker file_validators (= 2.0.2) flog font-awesome-rails font-awesome-sass geokit gretel i15r (~> 0.5.1) i18n-tasks (~> 0.9.4) i18n_generators jbuilder (~> 2.0) jquery-rails jquery-turbolinks jruby-jars jruby-openssl jruby-rack kaminari le lipsum mini_magick pg pg_search plugg postmark-rails (~> 0.12.0) prawn puma pushmeup rack-attack rack-cache rack-throttle rack-timeout rails (= 4.2.6) rails_best_practices rails_real_favicon randumb redis-rails require_all responders rest-client rolify roo (~> 2.3.2) sass-rails (~> 5.0) savon sdoc (~> 0.4.0) text therubyracer therubyrhino turbolinks uglifier (>= 1.3.0) validates_timeliness (~> 4.0) warbler RUBY VERSION ruby 2.3.0p0 (jruby 9.1.2.0) BUNDLED WITH 1.12.5 

Warble configuration file:

 Warbler::Config.new do |config| config.webxml.rails.env = 'development' config.features = %w(gemjar executable) config.dirs = %w(app config db lib log vendor tmp modules public) config.includes = FileList['Rakefile', 'lib/tasks/generate_ident.rake'] config.excludes = FileList["test/*"] config.bundle_without = ["development", "test", "assets", "doc"] config.jar_name = "application" end 

The Warbler configuration extension I used:

 Warbler::Config.new do |config| config.features = %w(gemjar compiled executable) config.dirs = %w(app config db lib log vendor tmp modules public) config.includes = FileList['Rakefile', 'lib/tasks/generate_ident.rake'] config.excludes = FileList["test/*", '.DS_Store'] config.java_libs += FileList["lib/*.jar"] config.bundler = true config.bundle_without = ["development", "test", "assets", "doc"] config.gem_dependencies = true config.gem_excludes = [/^(test|spec)\//, /_test.rb/, /rails_generator/] config.jar_name = "application" config.compiled_ruby_files = FileList['app/**/*.rb', 'config/*.rb', 'config/**/*.rb', 'lib/*.rb', 'lib/**/*.rb', 'modules/*.rb', 'modules/**/*.rb'] config.override_gem_home = true config.move_jars_to_webinf_lib = true config.webxml.rails.env = ENV['RAILS_ENV'] || 'development' config.webxml.jruby.min.runtimes = 2 config.webxml.jruby.max.runtimes = 8 end 

Is there a configuration or something else that I am missing?

Update:

Running a standalone WAR in Tomcat (7) spits out the same error and additional information:

 --- System jruby 9.1.2.0 (2.3.0) 2016-05-26 7357c8f Java HotSpot(TM) 64-Bit Server VM 25.91-b14 on 1.8.0_91-b14 +jit [linux-x86_64] Time: 2016-06-30 10:06:49 +0000 Server: Apache Tomcat/7.0.52 (Ubuntu) jruby.home: uri:classloader://META-INF/jruby.home --- Context Init Parameters: jruby.max.runtimes = 8 jruby.min.runtimes = 2 public.root = / rails.env = development --- Backtrace LoadError: no such file to load -- bundler/dep_proxy block in expand_dependencies at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:630 each at org/jruby/RubyArray.java:1593 block in expand_dependencies at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:629 each at org/jruby/RubyArray.java:1593 expand_dependencies at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:626 converge_locked_specs at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:594 resolve at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:195 specs at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:140 specs_for at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:185 requested_specs at uri:classloader:/gems/bundler-1.12.5/lib/bundler/definition.rb:174 requested_specs at uri:classloader:/gems/bundler-1.12.5/lib/bundler/environment.rb:19 setup at uri:classloader:/gems/bundler-1.12.5/lib/bundler/runtime.rb:14 setup at uri:classloader:/gems/bundler-1.12.5/lib/bundler.rb:95 <top> at uri:classloader:/gems/bundler-1.12.5/lib/bundler/setup.rb:19 require at org/jruby/RubyKernel.java:944 (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:1 <top> at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:133 load at org/jruby/RubyKernel.java:962 <top> at /var/lib/tomcat7/webapps/application/WEB-INF/config/boot.class:3 require at org/jruby/RubyKernel.java:944 (root) at /var/lib/tomcat7/webapps/application/WEB-INF/config/boot.rb:1 (root) at /var/lib/tomcat7/webapps/application/WEB-INF/config/boot.rb:1 (root) at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:1 <top> at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:55 --- RubyGems Gem.dir: /var/lib/tomcat7/webapps/application/WEB-INF/gems Gem.path: /usr/share/tomcat7/.gem/jruby/2.3.0 uri:classloader:/META-INF/jruby.home/lib/ruby/gems/shared /var/lib/tomcat7/webapps/application/WEB-INF/gems Activated gems: bundler-1.12.5 --- Bundler Bundler.bundle_path: /var/lib/tomcat7/webapps/application/WEB-INF/gems Bundler.root: /var/lib/tomcat7/webapps/application/WEB-INF Gemfile: /var/lib/tomcat7/webapps/application/WEB-INF/Gemfile Settings: gemfile = /var/lib/tomcat7/webapps/application/WEB-INF/Gemfile without = development:test:assets:doc orig_path = /bin:/usr/bin:/sbin:/usr/sbin --- JRuby-Rack Config compat_version = default_logger = org.jruby.rack.logging.StandardOutLogger@5b18447d equals = <error: > err = org.apache.tomcat.util.log.SystemLogHandler@d610b4f filter_adds_html = true filter_verifies_resource = false ignore_environment = false initial_memory_buffer_size = initial_runtimes = 2 jms_connection_factory = jms_jndi_properties = logger = org.jruby.rack.logging.ServletContextLogger@5be8fe29 logger_class_name = servlet_context logger_name = jruby.rack maximum_memory_buffer_size = maximum_runtimes = 8 num_initializer_threads = out = org.apache.tomcat.util.log.SystemLogHandler@3b4aedd8 rackup = rackup_path = rewindable = true runtime_arguments = runtime_environment = runtime_timeout_seconds = serial_initialization = false servlet_context = org.apache.catalina.core.ApplicationContextFacade@1097ea05 throw_init_exception = false --- $LOAD_PATH: uri:classloader:/META-INF/jruby.home/lib/ruby/2.3/site_ruby uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib 

Update 2:

I tried every version of bundler from the latest up to 1.10 with exactly the same result.

I also downgraded JRuby to 1.7.25, the same.

Answer 1

The problem is the line of functions:

config.features = %w(gemjar compiled executable)

The problem disappears if I change it to:

config.features = %w(compiled executable)

I assume this is a bug, as the documentation for Warbler states the following:

gemjar: this combines all the gems into a single gem file to reduce the number of files in .war. This is mainly useful for Google AppEngine, where the number of files per application is limited. (Note: not applicable for jar based applications.)