just use regular benchmark library

benchs/fog_vs.rb

@@ -1,5 +1,5 @@
 require 'rubygems'
-require 'benchwarmer'
+require 'benchmark'
 require 'right_aws'
 
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))

benchs/headers_split_vs_match.rb

@@ -1,5 +1,4 @@
-require 'rubygems'
-require 'benchwarmer'
+require 'benchmark'
 
 COUNT = 1000
 data = "Content-Length: 100"

benchs/params.rb

@@ -1,5 +1,4 @@
-require 'rubygems'
-require 'benchwarmer'
+require 'benchmark'
 
 def hash(options)
   result = "#{options.delete(:name)}"

benchs/stripping.rb

@@ -1,5 +1,4 @@
-require 'rubygems'
-require 'benchwarmer'
+require 'benchmark'
 
 COUNT = 1_000_000
 data = "Content-Length: 100\r\n"