* Package:    app-admin/mtail-3.0.0_rc5
 * 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...
 * Vendoring golang.org/x/tools github.com-golang-tools-a4ae70923768403983fdab4e1d612d79c08ba465.tar.gz
 * Vendoring github.com/fsnotify/fsnotify github.com-fsnotify-fsnotify-c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9.tar.gz
 * Vendoring github.com/golang/glog github.com-golang-glog-23def4e6c14b4da8ac2ed8007337bc5eb5007998.tar.gz
 * Vendoring github.com/pkg/errors github.com-pkg-errors-30136e27e2ac8d167177e8a583aa4c3fea5be833.tar.gz
 * Vendoring github.com/spf13/afero github.com-spf13-afero-bbf41cb36dffe15dff5bf7e18c447801e7ffe163.tar.gz
 * Vendoring golang.org/x/sys github.com-golang-sys-37707fdb30a5b38865cfb95e5aab41707daec7fd.tar.gz
 * Vendoring golang.org/x/text github.com-golang-text-4e4a3210bb54bb31f6ab2cdca2edcc0b50c420c1.tar.gz
>>> Source unpacked in /var/tmp/portage/app-admin/mtail-3.0.0_rc5/work
>>> Preparing source in /var/tmp/portage/app-admin/mtail-3.0.0_rc5/work/mtail-3.0.0_rc5 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/app-admin/mtail-3.0.0_rc5/work/mtail-3.0.0_rc5 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/app-admin/mtail-3.0.0_rc5/work/mtail-3.0.0_rc5 ...
WORK=/var/tmp/portage/app-admin/mtail-3.0.0_rc5/temp/go-build138587409
failed to initialize build cache at /root/cache/go-build: mkdir /root/cache: permission denied
 * ERROR: app-admin/mtail-3.0.0_rc5::gentoo failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line 124:  Called src_compile
 *   environment, line 457:  Called die
 * The specific snippet of code:
 *       go install -v -work -x ${EGO_BUILD_FLAGS} "${EGO_PN}/vendor/golang.org/x/tools/cmd/goyacc" || die;
 * 
 * If you need support, post the output of `emerge --info '=app-admin/mtail-3.0.0_rc5::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-admin/mtail-3.0.0_rc5::gentoo'`.
 * The complete build log is located at '/var/log/portage/app-admin:mtail-3.0.0_rc5:20190228-180447.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/app-admin/mtail-3.0.0_rc5/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-admin/mtail-3.0.0_rc5/temp/environment'.
 * Working directory: '/var/tmp/portage/app-admin/mtail-3.0.0_rc5/work/mtail-3.0.0_rc5'
 * S: '/var/tmp/portage/app-admin/mtail-3.0.0_rc5/work/mtail-3.0.0_rc5'