openwrt trunk build error

--2015-11-26 21:35:30--  http://mirror2.openwrt.org/sources/9fe0518213feddacd1842935dddeb6c8
Resolving mirror2.openwrt.org (mirror2.openwrt.org)... 46.4.11.11
Connecting to mirror2.openwrt.org (mirror2.openwrt.org)|46.4.11.11|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2015-11-26 21:35:31 ERROR 404: Not Found.

Download failed.
--2015-11-26 21:35:31--  http://downloads.openwrt.org/sources/9fe0518213feddacd1842935dddeb6c8
Resolving downloads.openwrt.org (downloads.openwrt.org)... 78.24.191.177
Connecting to downloads.openwrt.org (downloads.openwrt.org)|78.24.191.177|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2015-11-26 21:35:32 ERROR 404: Not Found.

Download failed.
No more mirrors to try - giving up.
Checking out files from the git repository...
Cloning into 'mtd-utils-1.5.1'...
fatal: unable to access 'https://git.infradead.org/mtd-utils.git/': SSL certificate problem: Invalid certificate chain
make[3]: *** [/Volumes/OpenWrt/openwrt/dl/mtd-utils-1.5.1-92686f212c9a4e16891c6a3c57629cbf4f0f8360.tar.gz] Error 128
make[3]: Leaving directory `/Volumes/OpenWrt/openwrt/tools/mtd-utils'
make[2]: *** [tools/mtd-utils/compile] Error 2
make[2]: Leaving directory `/Volumes/OpenWrt/openwrt'
make[1]: *** [/Volumes/OpenWrt/openwrt/staging_dir/target-mips_34kc_musl-1.1.11/stamp/.tools_install_yynyynynynyyyyyyynyyyyyyyyyyyyynyyyyynnyynynyyyynnnyy] Error 2
make[1]: Leaving directory `/Volumes/OpenWrt/openwrt'
make: *** [world] Error 2
alvins-mbp-2:openwrt alvintandejun$