Failed creating handler

[amne]

I'm on 2.1.11 tree f2030ce4053a42c14fe7 (alan commited a fix for a leak
in rlm_detail) but I can't reliably reproduce this. It's a head banger.
I have reset max_requests_per_server to 0 from 400 and now it says
"Error (event.c:3002): Failed to insert event" or something like that.
The cause seems to be the same: fr_event_insert failing and causing this
message to appear with a "panic attack". The load is not dramatic,
100-200 pkt/sec with peak at night of 2-3k pkt/sec.