Move the ensure_tmp_directories_exist initializer to the application object

railties/lib/rails/application.rb

@@ -98,5 +98,12 @@ def new
       require 'active_support/dependencies'
       plugin_loader.add_plugin_load_paths
     end
+
+    # Create tmp directories
+    initializer :ensure_tmp_directories_exist do
+      %w(cache pids sessions sockets).each do |dir_to_make|
+        FileUtils.mkdir_p(File.join(configuration.root_path, 'tmp', dir_to_make))
+      end
+    end
   end
 end

railties/lib/rails/initializer.rb

@@ -116,13 +116,6 @@ def self.run(initializer = nil, config = nil)
     end
   end
 
-  # Create tmp directories
-  Initializer.default.add :ensure_tmp_directories_exist do
-    %w(cache pids sessions sockets).each do |dir_to_make|
-      FileUtils.mkdir_p(File.join(configuration.root_path, 'tmp', dir_to_make))
-    end
-  end
-
   # Loads the environment specified by Configuration#environment_path, which
   # is typically one of development, test, or production.
   Initializer.default.add :load_environment do