Envfile in newrelic_rpm-3.9.5.251

- old
+ new

@@ -1,14 +1,21 @@
 suite_condition("SideKiq requires MRI 1.9.3 or JRuby 1.6 in 1.9 mode") do
   RUBY_VERSION >= '1.9.3' || (RUBY_PLATFORM == 'java' && RUBY_VERSION >= '1.9')
 end
 
-gemfile <<-RB
-  gem 'json'
-  gem 'sidekiq', '~> 3.0.0'
-  gem 'rack'
-  gem 'newrelic_rpm', :require => false, :path => File.expand_path('../../../../')
-RB
+# Sidekiq 3.x does not support MRI 1.9.x
+if RUBY_VERSION >= '2.0.0' || (RUBY_PLATFORM == 'java')
+  gemfile <<-RB
+    gem 'json'
+    gem 'sidekiq', '~> 3.0.0'
+    gem 'rack'
+
+    # Work around for https://github.com/celluloid/celluloid/issues/457
+    gem 'celluloid', '0.15.2'
+
+    gem 'newrelic_rpm', :require => false, :path => File.expand_path('../../../../')
+  RB
+end
 
 gemfile <<-RB
   gem 'json'
   gem 'sidekiq', '~> 2.17.7'
   gem 'rack'