BREAKING: New Phase of Matter

Great video, hoping for some further clarification though.  A perpetual motion machine of the first kind would violate conservation of energy.  You can’t get work (energy) out of a machine without the machine depleting it’s own energy, unless there is some kind of energy input.

A perpetual motion machine of the second kind would violate the second law of thermodynamics, in a heat engine, it’s impossible to convert the heat (energy) liberated entirely to mechanical work….some energy will always be wasted to the cold sink.
So, if the time crystal is not putting out any useful work….energy is just flip flopping back & forth inside the crystal itself… what is the violation?  Is it that there are no dissipation mechanisms?