# emerge udev Calculating dependencies... done! >>> Emerging (1 of 1) sys-fs/udev-087-r1 to / !!! Manifest file not found: '/usr/local/portage/sys-fs/udev/Manifest'
This is not a portage bug - that is an ebuild you have in an overlay. :)
Nope. I don't have any overlays. It would appear that an errant udev update transiently appeared on the mirrors and was later removed.