sidekiq.rb in sidekiq-5.0.1

- old
+ new

@@ -147,11 +147,12 @@
   def self.default_server_middleware
     Middleware::Chain.new
   end
 
   def self.default_worker_options=(hash)
-    @default_worker_options = default_worker_options.merge(hash.stringify_keys)
+    # stringify
+    @default_worker_options = default_worker_options.merge(Hash[hash.map{|k, v| [k.to_s, v]}])
   end
   def self.default_worker_options
     defined?(@default_worker_options) ? @default_worker_options : DEFAULT_WORKER_OPTIONS
   end
 
@@ -220,9 +221,8 @@
   # raised in workers that have not finished within the hard
   # timeout limit.  This is needed to rollback db transactions,
   # otherwise Ruby's Thread#kill will commit.  See #377.
   # DO NOT RESCUE THIS ERROR IN YOUR WORKERS
   class Shutdown < Interrupt; end
-
 end
 
 require 'sidekiq/rails' if defined?(::Rails::Engine)