Rakefile in mailbox-0.1.3 vs Rakefile in mailbox-0.1.4

@@ -7,15 +7,17 @@
 
 Rake::TestTask.new do |t|
   t.libs << "test"
   t.test_files = FileList['test/**/*_test.rb']
   t.verbose = true
+  t.warning = true
 end
 
 Rake::TestTask.new("example") do |t|
   t.libs << "example"
   t.test_files = FileList['example/**/*_example.rb']
   t.verbose = true
+  t.warning = true
 end
 
 Jeweler::Tasks.new do |gemspec|
   gemspec.name = "mailbox"
   gemspec.summary = "Mailbox is a JRuby module that simplifies concurrency and is backed by JVM threads."