Error: "remote query result rowtype does not match the specified FROM clause rowtype," on remote function call

[Antonio Gomez]

This is my remote function:
CREATE OR REPLACE FUNCTION public._test1()
RETURNS record
LANGUAGE plpgsql
AS $function$
DECLARE
rec record;
BEGIN
  select 1,2 into rec;
  return rec;
END $function$;

This is my local function call:
SELECT x.a, x.b
FROM dblink('conn_str', 'select public._test1();')
as x(a int ,b int);

This is the error thrown:
ERROR: remote query result rowtype does not match the specified FROM clause 
rowtype

Question:
Since DBLINK requires that I define a schema to place the function's return 
items, how do I make the call to recognize a record type being returned by the 
function.

Thanks!