script/performance/benchmarker should require environment

railties/lib/rails/commands/performance/benchmarker.rb

@@ -12,7 +12,6 @@
 
 require 'benchmark'
 include Benchmark
-Rails.initialize!
 
 # Don't include compilation in the benchmark
 ARGV.each { |expression| eval(expression) }
@@ -21,4 +20,4 @@
   ARGV.each_with_index do |expression, idx|
     x.report("##{idx + 1}") { N.times { eval(expression) } }
   end
-end 
+end

railties/lib/rails/generators/rails/app/templates/script/performance/benchmarker.tt

 <%= shebang %>
-require File.expand_path('../../../config/application',  __FILE__)
+require File.expand_path('../../../config/environment',  __FILE__)
 require 'rails/commands/performance/benchmarker'