>>> Source unpacked in /var/tmp/portage/app-emulation/libvirt-0.9.13/work >>> Preparing source in /var/tmp/portage/app-emulation/libvirt-0.9.13/work/libvirt-0.9.13 ... * Applying libvirt-0.9.13-qemu-add-rbd-to-whitelist-of-migration-safe-formats.patch ... * Failed Patch: libvirt-0.9.13-qemu-add-rbd-to-whitelist-of-migration-safe-formats.patch ! Said patch contains email headers and body. I tried ripping the email part out of the patch but it still didn't apply. Finally I removed the .mailmap diff (It doesn't exist in the tarball. I think that's .gitignor'ed) and that worked.
I have the same problem and the same workaround.
Fixed in cvs.