Demonstrates an issue with selective core_ext and Time.=== on ActiveSupport 3.2.4-3.2.6

time_ext.rb

ACTIVESUPPORT_SOURCE = ARGV.pop

if ACTIVESUPPORT_SOURCE
  if File.directory?(ACTIVESUPPORT_SOURCE)
    puts "Using ActiveSupport from #{ACTIVESUPPORT_SOURCE}"
    $LOAD_PATH << ACTIVESUPPORT_SOURCE
  else ACTIVESUPPORT_SOURCE
    puts "Using ActiveSupport gem version #{ACTIVESUPPORT_SOURCE}"
    require 'rubygems'
    gem 'activesupport', ACTIVESUPPORT_SOURCE
  end
else
  require 'rubygems' # use whatever's automatically loaded
end

require 'active_support/core_ext/string'

begin
  Time === 'foo'
  puts "No problem"
rescue => e
  puts "Failed.\n#{e.class}: #{e}"
  puts e.backtrace.join("\n  ")
end