SPDY patch and mod_zip crashing workers

[W. Andrew Loe III]

I'm trying to get nginx 1.3.8 to play well with the SPDY patch and
mod_zip. I don't want to move to 1.3.9+ because I rely on the upload
modules that have not yet been modified to handle the chunked uploads.

When initiating a download with mod_zip, things appear to go ok until
mod_zip starts to feed the content of the subrequest into the output
handler (spdy in this case). I get this in my debug log:

[debug] 5244#0: *1 http init upstream, client timer: 0
[notice] 5230#0: signal 20 (SIGCHLD) received

nginx version: nginx/1.3.8
built by clang 4.0 (tags/Apple/clang-421.0.60) (based on LLVM 3.1svn)
TLS SNI support enabled
configure arguments: --prefix=/usr/local/Cellar/nginx/1.3.8
--conf-path=/usr/local/etc/nginx/nginx.conf
--error-log-path=/usr/local/var/nginx/error.log
--http-log-path=/usr/local/var/nginx/access.log
--http-client-body-temp-path=/usr/local/var/cache/nginx/client_temp
--http-proxy-temp-path=/usr/local/var/cache/nginx/proxy_temp
--http-fastcgi-temp-path=/usr/local/var/cache/nginx/fastcgi_temp
--http-uwsgi-temp-path=/usr/local/var/cache/nginx/uwsgi_temp
--http-scgi-temp-path=/usr/local/var/cache/nginx/scgi_temp
--lock-path=/usr/local/var/lock/nginx.lock
--pid-path=/usr/local/var/run/nginx.pid --with-pcre-jit --with-debug
--with-ipv6 --without-http_browser_module
--without-http_empty_gif_module --without-http_fastcgi_module
--without-http_geo_module --without-http_memcached_module
--without-http_referer_module --without-http_scgi_module
--without-http_split_clients_module --without-http_ssi_module
--without-http_userid_module --without-http_uwsgi_module
--without-mail_pop3_module --without-mail_imap_module
--without-mail_smtp_module --with-http_gzip_static_module
--with-http_realip_module --with-http_ssl_module
--with-http_stub_status_module
--add-module=nginx_upload_module-2.0.12c --add-module=mod_zip-1.1.6
--add-module=headers-more-nginx-module-0.19

I've attached the complete debug log.
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