[erlang-questions] supervisor not restarting gen_server

[AD]

I have a gen_server that seems to be crashing for some reason and the
supservisor is not restarting it.  The child spec is one_for_one, permanent
and the error log is below.  All i see is the crash report but no attempt
at a restart.  Is there any way to figure out why the supervisor would not
restart it?

2012-05-02 14:54:28.776 [info] <0.889.0>@websocket_pubsubsrv:terminate:198
Shutting down pubsub server...
2012-05-02 14:54:28.776 [error] <0.882.0> Supervisor cowboy_sup had child
{cowboy_listener_sup,my_http_listener} started with
cowboy_listener_sup:start_link(100, cowboy_tcp_transport, [{port,8000}],
cowboy_http_protocol,
[{dispatch,[{'_',[{[<<"multiplex">>,'...'],sockjs_cowboy_handler,{service,"/multiplex",sockjs_multiplex,...}},...]}]}])
at <0.909.0> exit with reason killed in context child_terminated
2012-05-02 14:54:28.785 [error] <0.911.0> gen_server <0.911.0> terminated
with reason: killed
2012-05-02 14:54:28.788 [error] <0.911.0> CRASH REPORT Process <0.911.0>
with 1 neighbours crashed with reason:
{killed,[{gen_server,terminate,6},{proc_lib,init_p_do_apply,3}]}


Thanks
-AD
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