If a player is wearing Adamantine armor, do they still take critical damage while incapacitated?

@JeremyECrawford If a player is wearing Adamantine armor, do they still take critical damage while incapacitated? (Stunned, paralyzed?) pic.twitter.com/263TdLp3KR

— DropTheDie (@DropTheDie) November 23, 2016

@DropTheDie The specific (the armor) beats the general (the combat rules).

— Jeremy Crawford (@JeremyECrawford) November 23, 2016