OE Core Build error

While doing the following step

bitbake -k angstrom-lxde-image

I Got following error

> WARNING: Failed to fetch URL
> http://xorg.freedesktop.org/releases/individual/data/xkeyboard-config/xkeyboard-config-2.15.tar.bz2, attempting MIRRORS if available
> WARNING: Failed to fetch URL
> http://ftp.gnome.org/pub/GNOME/sources/gnome-common/3.14/gnome-common-3.14.0.tar.xz;name=archive,
> attempting MIRRORS if available ERROR:
> Fetcher failure: Fetch command failed
> with exit code 4, output: wget: unable
> to resolve host address 'www.x.org'
> 
> ERROR: Function failed: Fetcher
> failure for URL:
> 'http://xorg.freedesktop.org/releases/individual/data/xkeyboard-config/xkeyboard-config-2.15.tar.bz2'.
> Unable to fetch URL from any source.
> ERROR: Logfile of failure stored in:
> /home/naveen/oe-core/build/tmp-glibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/xkeyboard-config/2.15-r0/temp/log.do_fetch.10989
> ERROR: Task 4525
> (/home/naveen/oe-core/build/../layers/openembedded-core/meta/recipes-graphics/xorg-lib/xkeyboard-config_2.15.bb,
> do_fetch) failed with exit code '1'
> WARNING: QA Issue: gcc-runtime:
> Files/directories were installed but
> not shipped in any package:  
> /usr/lib/libstdc++fs.la  
> /usr/lib/libstdc++fs.a Please set
> FILES such that these items are
> packaged. Alternatively if they are
> unneeded, avoid installing them or
> delete them within do_install.
> gcc-runtime: 2 installed and not
> shipped files. [installed-vs-shipped]

How can I solve this issue, I used following repo command

repo init -u http://git.toradex.com/toradex-bsp-platform.git -b LinuxImageV2.6.1

Please check your internet connection and retry again. “Unable to resolve host address” is generally an issue with DNS and points to a problem with internet connection.

Thank you, But still what about that last warning

WARNING: QA Issue: gcc-runtime:
 > Files/directories were installed but
 > not shipped in any package:  
 > /usr/lib/libstdc++fs.la  
 > /usr/lib/libstdc++fs.a Please set
 > FILES such that these items are
 > packaged. Alternatively if they are
 > unneeded, avoid installing them or
 > delete them within do_install.
 > gcc-runtime: 2 installed and not
 > shipped files. [installed-vs-shipped]

How can we override this

The warning should not result in any issues.