* Package:    net-p2p/go-ethereum-1.8.15
 * Repository: gentoo
 * Maintainer: mathy@vanvoorden.be proxy-maint@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking go-ethereum-1.8.15.tar.gz to /var/tmp/portage/net-p2p/go-ethereum-1.8.15/work
>>> Source unpacked in /var/tmp/portage/net-p2p/go-ethereum-1.8.15/work
>>> Preparing source in /var/tmp/portage/net-p2p/go-ethereum-1.8.15/work/go-ethereum-1.8.15 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/net-p2p/go-ethereum-1.8.15/work/go-ethereum-1.8.15 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/net-p2p/go-ethereum-1.8.15/work/go-ethereum-1.8.15 ...
make -j1 geth 
build/env.sh go run build/ci.go install ./cmd/geth
failed to initialize build cache at /root/cache/go-build: mkdir /root/cache: permission denied
make: *** [Makefile:15: geth] Error 1
 * ERROR: net-p2p/go-ethereum-1.8.15::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=net-p2p/go-ethereum-1.8.15::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=net-p2p/go-ethereum-1.8.15::gentoo'`.
 * The complete build log is located at '/var/log/portage/net-p2p:go-ethereum-1.8.15:20190228-130530.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/net-p2p/go-ethereum-1.8.15/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-p2p/go-ethereum-1.8.15/temp/environment'.
 * Working directory: '/var/tmp/portage/net-p2p/go-ethereum-1.8.15/work/go-ethereum-1.8.15'
 * S: '/var/tmp/portage/net-p2p/go-ethereum-1.8.15/work/go-ethereum-1.8.15'