It seems that the dev-libs/kproperty-3.0.0.ebuild file was deleted in portage tree. Timestamp of repository gentoo: Mon, 14 Nov 2016 22:22:37 +0000 ls -l /usr/portage/dev-libs/kproperty -rw-r--r-- 1 portage portage 381 9. Nov 16:00 Manifest -rw-r--r-- 1 portage portage 249 9. Nov 16:00 metadata.xml
Can't confirm, everything's alright in git and (at least my) rsync copy.
Thank you for checking Andreas. 1) I do not know why the file has disappeared. HDD and filesystem is Ok. 2) I use git to sync tree. But git did not complain at sync that the file is missing, let alone refetch the file. 3) I deleted my tree, and resynchronized the whole tree. Now everything is all right again. Very strange.