Bug fixes and cleanup

lib/cocoapods/installer.rb

@@ -187,10 +187,8 @@ module Pod
     #
     def clean_sandbox
       sandbox.public_headers.implode!
-      targets.each do |target|
-        target.libraries.each do |library|
-          library.build_headers.implode!
-        end
+      libraries.each do |library|
+        library.build_headers.implode!
       end
 
       unless sandbox_state.deleted.empty?

lib/cocoapods/installer/user_project_integrator/target_integrator.rb

@@ -79,7 +79,7 @@ module Pod
         # @return [String] a string representation suitable for debugging.
         #
         def inspect
-          "#<#{self.class} for target `#{target_definition.label}'>"
+          "#<#{self.class} for target `#{target.label}'>"
         end
 
         #---------------------------------------------------------------------#

lib/cocoapods/validator.rb

@@ -209,7 +209,7 @@ module Pod
       installer = Installer.new(sandbox, podfile)
       installer.install!
 
-      file_accessors = installer.libraries.first.file_accessors
+      file_accessors = installer.targets.first.libraries.first.file_accessors
       @file_accessor = file_accessors.find { |accessor| accessor.spec == spec }
       config.silent
     end