Many Ruby 1.8‘s tempfile libraries have a bug that can cause the #close method to raise an exception. Subclass it and fix it.
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# File lib/phusion_passenger/utils/rewindable_input.rb, line 72 72: def _close 73: @tmpfile.close if @tmpfile 74: @data[1] = nil if @data 75: @tmpfile = nil 76: end