Seg fault in ngx_http_run_posted_requests

Sergey, I'm double-checking with the customer to confirm that they are using the latest patches that you sent me, but also wanted to capture this in case it's new:

ab -c 100 -n 10000 "http://localhost:8061/cb?cmd=set&key=foo&val=bar"

I get following:

Program terminated with signal 11, Segmentation fault.
#0 0x08077953 in ngx_http_run_posted_requests (c=0x9ea2df8) at
src/http/ngx_http_request.c:1893
1893 pr = r->main->posted_requests;
(gdb) bt
#0 0x08077953 in ngx_http_run_posted_requests (c=0x9ea2df8) at
src/http/ngx_http_request.c:1893
#1 0x080b30a3 in ngx_lcb_finalize_request (r=0x9e81090, rc=<optimized
out>) at
../nginx-couchbase-module-0.2.0-6-g9d6c0d3/src/ngx_lcb_callbacks.c:85
#2 0x080b33eb in ngx_lcb_store_callback (instance=0x9d3c188,
cookie=0x9e81090, operation=LCB_SET, error=LCB_SUCCESS, item=0xbfbdb948)
at
../nginx-couchbase-module-0.2.0-6-g9d6c0d3/src/ngx_lcb_callbacks.c:229
#3 0xb76df957 in store_response_handler (server=0x9e74008,
packet=0x9ea0100, res=0x9e83080) at src/handler.c:512
#4 0xb76e045c in lcb_dispatch_response (serv=0x9e74008, pkt=0x9ea0100,
res=0x9e83080) at src/handler.c:960
#5 0xb76dd355 in parse_single (c=0x9e74008, stop=1369943658990891000)
at src/event.c:142
#6 0xb76dd51b in do_read_data (c=0x9e74008, allow_read=0) at
src/event.c:208
#7 0xb76dd73a in lcb_server_event_handler (sock=165931668, which=4,
arg=0x9e74008) at src/event.c:283
#8 0x080b2395 in ngx_lcb_handler_thunk (ev=0x9d6ec38) at
../nginx-couchbase-module-0.2.0-6-g9d6c0d3/src/ngx_lcb_plugin.c:127
#9 0x0806a858 in ngx_epoll_process_events (cycle=0x9d36978, timer=2500,
flags=1) at src/event/modules/ngx_epoll_module.c:714
#10 0x080615c2 in ngx_process_events_and_timers (cycle=0x9d36978) at
src/event/ngx_event.c:247
#11 0x08069fb9 in ngx_single_process_cycle (cycle=0x9d36978) at
src/os/unix/ngx_process_cycle.c:316
#12 0x0804b8ae in main (argc=1, argv=0xbfbdbd64) at src/core/nginx.c:407