Since there are major incompatible changes in nightly builds, I would be very cautious with using them. As an alternative, you could use one of several Eagle to KiCad converters.
If you just need to view an Eagle design rather than modify it, I use the free Eagle version for that.
Thanks, Bob & Rene.
It’s a pretty simple circuit, so just getting a view/print of it is all I need. The board as designed now uses SMD, but at my age, I prefer through-hole components, which is why I want to redesign it for my use.