>>> Downloading 'https://dev.gentoo.org/~xarthisius/distfiles/eselect-opencl-1.1.0-r1.tar.xz' --2018-05-13 12:52:27-- https://dev.gentoo.org/~xarthisius/distfiles/eselect-opencl-1.1.0-r1.tar.xz Resolving dev.gentoo.org (dev.gentoo.org)... 2001:470:ea4a:1:5054:ff:fec7:86e4, 140.211.166.183 Connecting to dev.gentoo.org (dev.gentoo.org)|2001:470:ea4a:1:5054:ff:fec7:86e4|:443... connected. HTTP request sent, awaiting response... 404 Not Found 2018-05-13 12:52:28 ERROR 404: Not Found. The user "xarthisius" cannot be found at all.
Created attachment 532230 [details] The build.log I have the same problem with the same package. The URLs are different but I also have a 404 Not Found.
I could solve that by adding more mirrors to the GENTOO_MIRRORS in /etc/portage/make.conf. That was my configuration before solving the error: GENTOO_MIRRORS="rsync://de-mirror.org/gentoo/" That's my new configuration: GENTOO_MIRRORS="rsync://de-mirror.org/gentoo/ rsync://ftp-stud.hs-esslingen.de/gentoo/ http://gentoo-euetib.upc.es/mirror/gentoo/ http://mirror.usu.edu/mirrors/gentoo/" Hope it helps. It seems to be a problem in the server side, it's not a Gentoo bug.
Issue is at the mirror. Specifying a different or more mirrors works.