* Package:    app-emulation/docker-swarm-1.2.5
 * Repository: gentoo
 * Maintainer: zmedico@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking docker-swarm-1.2.5.tar.gz to /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5
>>> Unpacking gogo-protobuf-0.3.tar.gz to /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5
>>> Unpacking logrus-airbrake-hook-2.1.1.tar.gz to /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5
>>> Unpacking gobrake-2.0.8.tar.gz to /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5
>>> Unpacking logrus-0.11.0.tar.gz to /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5
>>> Source unpacked in /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work
>>> Preparing source in /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5 ...
WORK=/var/tmp/portage/app-emulation/docker-swarm-1.2.5/temp/go-build709354421
failed to initialize build cache at /root/cache/go-build: mkdir /root/cache: permission denied
 * ERROR: app-emulation/docker-swarm-1.2.5::gentoo failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line 124:  Called src_compile
 *   environment, line 409:  Called die
 * The specific snippet of code:
 *       [[ -x ${S}/bin/${PN#docker-} ]] || die
 * 
 * If you need support, post the output of `emerge --info '=app-emulation/docker-swarm-1.2.5::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-emulation/docker-swarm-1.2.5::gentoo'`.
 * The complete build log is located at '/var/log/portage/app-emulation:docker-swarm-1.2.5:20190228-152813.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/app-emulation/docker-swarm-1.2.5/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-emulation/docker-swarm-1.2.5/temp/environment'.
 * Working directory: '/var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5'
 * S: '/var/tmp/portage/app-emulation/docker-swarm-1.2.5/work/docker-swarm-1.2.5'