fails:Marshal.dump with a Time dumps the zone and the offset
fails(travis):Marshal.dump with an Exception dumps the message for the exception
fails:Marshal.dump with a Symbol dumps a binary encoded Symbol
fails:Marshal.dump with an Exception dumps an empty Exception
fails:Marshal.dump with an Exception contains the filename in the backtrace
fails:Marshal.dump with an Object dumps an Object with a non-US-ASCII instance variable
fails:Marshal.dump with an Exception dumps the cause for the exception
fails:Marshal.dump with a Time dumps the zone, but not the offset if zone is UTC
fails:Marshal.dump with an Exception dumps instance variables if they exist
fails:Marshal.dump with a Symbol dumps multiple Symbols sharing the same encoding
