class Minitest::ServerReporter

def sanitize failures
  failures.map! { |e|
    case e
    when Minitest::UnexpectedError then
      # embedded exception might not be able to be marshaled.
      bt = e.exception.backtrace
      ex = RuntimeError.new(e.exception.message)
      e.exception = ex
      ex.set_backtrace bt
      e = Minitest::UnexpectedError.new ex # ugh. some rails plugin. ugh.
      if ex.instance_variables.include? :@bindings then # web-console is Evil
        ex.instance_variable_set :@bindings, nil
        e.instance_variable_set  :@bindings, nil
      end
    when Minitest::Assertion then
      bt = e.backtrace
      e = e.class.new(e.message)
      e.set_backtrace bt
    when Minitest::Skip then
      # do nothing
    else
      warn "Unhandled exception type: #{e.class}\n\n#{e.inspect}"
    end
    e
  }
end