[Rails] year too big to marshal: 1865 UTC

Hello there,

I have an issue when putting an ActiveRecord model into the Rails.cache.  The issue seems to be caused by the published_on column, which is a MySQL datetime column and supports dates between  '1000-01-01 00:00:00' and '9999-12-31 23:59:59'.  However Rails appears to load this into a class which can't support a similar range of dates:

> p = Product.find_by_gtin("9781418133399")

> p.published_on

=> Sun, 01 Jan 1899 00:00:00 EST +10:00

> Rails.cache.write("test", p)

ArgumentError: year too big to marshal: 1898 UTC

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/core_ext/time/marshal.rb:54:in `_dump'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/core_ext/time/marshal.rb:54:in `_dump'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/cache.rb:561:in `dump'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/cache.rb:561:in `initialize'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/cache.rb:363:in `new'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/cache.rb:363:in `block in write'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/cache.rb:520:in `instrument'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/activesupport-3.2.2/lib/active_support/cache.rb:362:in `write'

from (irb):141

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/railties-3.2.2/lib/rails/commands/console.rb:47:in `start'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/railties-3.2.2/lib/rails/commands/console.rb:8:in `start'

from /Users/dkam/Development/Booko/mysql2/ruby/1.9.1/gems/railties-3.2.2/lib/rails/commands.rb:41:in `<top (required)>'

from script/rails:6:in `require'

from script/rails:6:in `<main>'

Is this a bug or am I doing something wrong? 

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