[client] issuing public ares_query_dnsrec() to blackhole DNS peer 127.0.0.1:40232
[client] ares_query_dnsrec rc=0 (Successful completion) qid=1930
[server] received UDP DNS query bytes=64 qid=1930; intentionally withholding response to drive process_timeouts()
[callback] entry #1 status=12 (Timeout while contacting DNS servers) timeouts=1 cancel_called=0
[callback] reentering public ares_cancel(channel) from timeout callback
[callback] entry #2 status=24 (DNS query cancelled) timeouts=0 cancel_called=1
[callback] returned from reentrant ares_cancel(channel)
free(): double free detected in tcache 2