Creature is immune to non-magic weapons and in antimagic field=impossible to damage?

@JeremyECrawford @mikemearls Creature is immune to non-magic weapons and in antimagic field=impossible to damage? Or does it lose immunity?

— Ken Walter (@redkatartist) May 5, 2016

Antimagic field has no effect on a creature's immunities, unless those immunities are sustained by magic. #DnD https://t.co/VvJgNVcNg7

— Jeremy Crawford (@JeremyECrawford) May 9, 2016