[yocto] Some nightly build failures on autobuilder (on commit b9a97e07, namely, "Revert part of the unpack change...")

[Cui, Dexuan]

Cui, Dexuan wrote:
> 1)	Building qemumips meta-toolchain-sdk failed:
> http://autobuilder.pokylinux.org:8010/builders/nightly-external/builds/35/steps/shell_26/logs/stdio
> eglibc's do_package failed:
> ERROR: Error executing a python function in
> /srv/home/pokybuild/poky-slave/nightly-external/build/meta/recipes-core/eglibc/eglibc_2.12.bb:
> CopyFailed: Command tar -cf - -C
> /srv/home/pokybuild/poky-slave/nightly-external/build/build/tmp/work/mips-poky-linux/eglibc-2.12-r13/sstate-install-package///package
> -ps . | tar -xf - -C
> /srv/home/pokybuild/poky-slave/nightly-external/build/build/tmp/work/mips-poky-linux/eglibc-2.12-r13/package
> failed with return value 2    
> 
> Looks it's related to Mark's recent commit 3e6d91ec, but what's odd
> is: qemumips failed here while qemux86 and qemuarm are ok... BTW:
> MACHINE routerstationpro and atom-pc also have the same failure as
> qemumips.   
> 
> First I'm trying to reproduce issue 1 now. Mark, do you have any
> quick thought?  :-) 
hmmm, I can't reproduce the issue in my local ppc build with the same commit... 
 
Thanks,
-- Dexuan