The stable sys-block/btrace-0.0.20071210202527 doesn't build as 2006* and 2007* sources have vanished from http://brick.kernel.dk/snaps/. Consider dropping the affected ebuilds or use a different download source. Reproducible: Always Steps to Reproduce:
I removed the old unstable versions. The stable ebuild needs to stay until 1.0.1-r1 is stabilized.
+ 11 Jan 2014; Pacho Ramos <pacho@gentoo.org> -btrace-0.0.20071210202527.ebuild: + Drop old version that cannot be downloaded (#269121 by Jan Kunzmann) +