>>> Downloading 'http://mirror.qubenet.net/mirror/gentoo/distfiles/opencl10.zip' --2018-06-14 15:17:32-- http://mirror.qubenet.net/mirror/gentoo/distfiles/opencl10.zip Resolving mirror.qubenet.net... 81.91.242.10, 2a01:90:0:7::10 Connecting to mirror.qubenet.net|81.91.242.10|:80... failed: Connection timed out. Connecting to mirror.qubenet.net|2a01:90:0:7::10|:80... failed: Network is unreachable. >>> Downloading 'https://github.com/KhronosGroup/OpenCL-Headers/archive/opencl10.zip' --2018-06-14 15:18:32-- https://github.com/KhronosGroup/OpenCL-Headers/archive/opencl10.zip Resolving github.com... 192.30.253.112, 192.30.253.113 Connecting to github.com|192.30.253.112|:443... connected. HTTP request sent, awaiting response... 302 Found Location: https://codeload.github.com/KhronosGroup/OpenCL-Headers/zip/opencl10 [following] --2018-06-14 15:18:32-- https://codeload.github.com/KhronosGroup/OpenCL-Headers/zip/opencl10 Resolving codeload.github.com... 192.30.253.121, 192.30.253.120 Connecting to codeload.github.com|192.30.253.121|:443... connected. HTTP request sent, awaiting response... 404 Not Found 2018-06-14 15:18:33 ERROR 404: Not Found. !!! Couldn't download 'opencl10.zip'. Aborting.
$ GENTOO_MIRRORS="" ebuild eselect-opencl-1.1.0-r4.ebuild fetch [..] HTTP request sent, awaiting response... 404 Not Found 2018-07-05 03:28:15 ERROR 404: Not Found. !!! Couldn't download 'opencl10.zip'. Aborting.
We can mirror those files, so no treecleaning need here.