I tried to make emerge -DuNv world, just after syncing and that problem occured. My emerge --info : http://greyer.wafel.com/gentoo/emerge_info.txt (sorry for url, but I have problems with pasteing under console). Full compilation log of my coreutils: http://greyer.wafel.com/gentoo/kompilacja.txt
Why don't you attach (not paste) the files here? This really makes searching for duplicate bugs completely useless. Did you downgrade glibc? If not, run `MAKEOPTS=-j1 emerge coreutils >& emerge.log` and *attach* the log here. If yes, then don't do it next time. ;)