anchor.diff:  //called to set a mob's antag icon state
   /datum/game_mode/proc/set_antag_hud(var/mob/living/M, var/new_icon_state)
   	if(!istype(M))
  -		ERROR("set_antag_hud(): [M] ([M.type]) is not a living mob!")
  +		CRASH("set_antag_hud(): [M] ([M.type]) is not a living mob!")
   	var/image/holder = M.hud_list[ANTAG_HUD]
   	holder.icon_state = new_icon_state
   	M.mind.antag_hud_icon_state = new_icon_state
  
positive.code: 
  /datum/atom_hud/antag/proc/leave_hud(var/mob/living/M)
  	if(!istype(M))
  		ERROR("leave_hud(): [M] ([M.type]) is not a living mob!")
  	remove_from_hud(M)
  	remove_hud_from(M)
  	M.mind.antag_hud = null
  
negative.code: 
  /datum/atom_hud/antag/proc/join_hud(var/mob/living/M)
  	if(!istype(M))
  		CRASH("join_hud(): [M] ([M.type]) is not a living mob!")
  	if(M.mind.antag_hud)
  		var/datum/atom_hud/antag/oldhud = M.mind.antag_hud
  		oldhud.leave_hud(M)
  