anchor.diff:  
       %% Kill the node
       rpc:call(N1,erlang,halt,[]),
  -    [] = cover:which_nodes(),
  +    cover_which_nodes([]),
   
       check_f_calls(1,0), % only the first call - before the flush
   
  
positive.code:     {ok,N1} = ?t:start_node(NodeName,peer,
  			    [{args," -pa " ++ DataDir},{start_cover,false}]),
      timer:sleep(300),
      [] = cover:which_nodes(),
      Beam = rpc:call(N1,code,which,[f]),
      false = (Beam==cover_compiled),
  
  
negative.code:     rpc:cast(N1,f,call_f2_when_isolated,[]),
  
      %% Disconnect and check that node is removed from main cover node
      true = net_kernel:disconnect(N1),
      timer:sleep(500), % allow some to detect disconnect and for f:f2() call
      cover_which_nodes([]),
  
      %% Do some add one module (b) and remove one module (a)
      code:purge(a),
  