Attempting to update to Ruby 2.0 and Rails 4.0. Currently a fail

Gemfile

@@ -1,6 +1,7 @@
 source 'https://rubygems.org'
+ruby '2.0.0'
 
-gem 'rails', '3.2.12'
+gem 'rails', '3.2.13'
 gem 'unicorn'
 gem 'sqlite3', groups: [:development, :test]
 gem 'pg', groups: [:production]

Gemfile.lock

@@ -14,32 +14,32 @@ GEM
       Platform (>= 0.4.0)
       open4
     Platform (0.4.0)
-    actionmailer (3.2.12)
-      actionpack (= 3.2.12)
-      mail (~> 2.4.4)
-    actionpack (3.2.12)
-      activemodel (= 3.2.12)
-      activesupport (= 3.2.12)
+    actionmailer (3.2.13)
+      actionpack (= 3.2.13)
+      mail (~> 2.5.3)
+    actionpack (3.2.13)
+      activemodel (= 3.2.13)
+      activesupport (= 3.2.13)
       builder (~> 3.0.0)
       erubis (~> 2.7.0)
       journey (~> 1.0.4)
       rack (~> 1.4.5)
       rack-cache (~> 1.2)
       rack-test (~> 0.6.1)
       sprockets (~> 2.2.1)
-    activemodel (3.2.12)
-      activesupport (= 3.2.12)
+    activemodel (3.2.13)
+      activesupport (= 3.2.13)
       builder (~> 3.0.0)
-    activerecord (3.2.12)
-      activemodel (= 3.2.12)
-      activesupport (= 3.2.12)
+    activerecord (3.2.13)
+      activemodel (= 3.2.13)
+      activesupport (= 3.2.13)
       arel (~> 3.0.2)
       tzinfo (~> 0.3.29)
-    activeresource (3.2.12)
-      activemodel (= 3.2.12)
-      activesupport (= 3.2.12)
-    activesupport (3.2.12)
-      i18n (~> 0.6)
+    activeresource (3.2.13)
+      activemodel (= 3.2.13)
+      activesupport (= 3.2.13)
+    activesupport (3.2.13)
+      i18n (= 0.6.1)
       multi_json (~> 1.0)
     arel (3.0.2)
     builder (3.0.4)
@@ -78,12 +78,12 @@ GEM
       actionpack (>= 3.1)
       less (~> 2.2.0)
     libv8 (3.11.8.4)
-    mail (2.4.4)
+    mail (2.5.3)
       i18n (>= 0.4.0)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.21)
-    multi_json (1.6.0)
+    multi_json (1.7.1)
     newrelic_rpm (3.5.3.25)
     open4 (1.3.0)
     pg (0.14.1)
@@ -95,24 +95,24 @@ GEM
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
-    rails (3.2.12)
-      actionmailer (= 3.2.12)
-      actionpack (= 3.2.12)
-      activerecord (= 3.2.12)
-      activeresource (= 3.2.12)
-      activesupport (= 3.2.12)
+    rails (3.2.13)
+      actionmailer (= 3.2.13)
+      actionpack (= 3.2.13)
+      activerecord (= 3.2.13)
+      activeresource (= 3.2.13)
+      activesupport (= 3.2.13)
       bundler (~> 1.0)
-      railties (= 3.2.12)
-    railties (3.2.12)
-      actionpack (= 3.2.12)
-      activesupport (= 3.2.12)
+      railties (= 3.2.13)
+    railties (3.2.13)
+      actionpack (= 3.2.13)
+      activesupport (= 3.2.13)
       rack-ssl (~> 1.3.2)
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (>= 0.14.6, < 2.0)
     raindrops (0.10.0)
     rake (10.0.3)
-    rdoc (3.12.1)
+    rdoc (3.12.2)
       json (~> 1.4)
     ref (1.0.2)
     sass (3.2.3)
@@ -129,11 +129,11 @@ GEM
     therubyracer (0.11.0)
       ref
     thor (0.17.0)
-    tilt (1.3.3)
+    tilt (1.3.6)
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.35)
+    tzinfo (0.3.37)
     uglifier (1.3.0)
       execjs (>= 0.3.0)
       multi_json (~> 1.0, >= 1.0.2)
@@ -159,7 +159,7 @@ DEPENDENCIES
   libv8 (~> 3.11.8)
   newrelic_rpm
   pg
-  rails (= 3.2.12)
+  rails (= 3.2.13)
   sass-rails (~> 3.2.3)
   sqlite3
   therubyracer

app/controllers/whores_controller.rb

@@ -4,7 +4,9 @@ class WhoresController < ApplicationController
   def index
     @whore = Whore.new
     @whores = Whore.order("id DESC").page params[:page]
-    @whore_count = Whore.count
+    @whore_count = Rails.cache.fetch([:whore_count], expires_in: 30.minutes) do
+      Whore.count
+    end
   end
 
   def create