This package still uses ruby 2.3. Upstream is no longer supporting Ruby 2.3 and security support ends on March 1st, 2019. Ruby 2.3 will be masked for removal as soon as possible but ultimately at this date, along with any packages still depending on ruby23. Please update your package to use a newer ruby slot. Use ruby 2.4 if you can only use one slot and your package is in arch Use ruby 2.5 if you can only use one slot and your package is in ~arch Use as many ruby targets as possible when you can use multiple slots.
Fixed by updating to ruby 2.4.
