* Package:    app-emulation/img-0.5.6
 * Repository: gentoo
 * Maintainer: mrueg@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux seccomp userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Source unpacked in /var/tmp/portage/app-emulation/img-0.5.6/work
>>> Preparing source in /var/tmp/portage/app-emulation/img-0.5.6/work/img-0.5.6 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/app-emulation/img-0.5.6/work/img-0.5.6 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/app-emulation/img-0.5.6/work/img-0.5.6 ...
/var/tmp/portage/app-emulation/img-0.5.6/work/img-0.5.6/src/github.com/genuinetools/img /var/tmp/portage/app-emulation/img-0.5.6/work/img-0.5.6
failed to initialize build cache at /root/cache/go-build: mkdir /root/cache: permission denied
 * ERROR: app-emulation/img-0.5.6::gentoo failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line 124:  Called src_compile
 *   environment, line 475:  Called die
 * The specific snippet of code:
 *       GOPATH="${S}" go build -tags "noembed ${TAGS}" -v -ldflags "-X ${EGO_PN}/version.GITCOMMIT=${GIT_COMMIT} -X ${EGO_PN}/version.VERSION=${PV}" -o "${S}"/bin/img . || die;
 * 
 * If you need support, post the output of `emerge --info '=app-emulation/img-0.5.6::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-emulation/img-0.5.6::gentoo'`.
 * The complete build log is located at '/var/log/portage/app-emulation:img-0.5.6:20190302-215340.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/app-emulation/img-0.5.6/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-emulation/img-0.5.6/temp/environment'.
 * Working directory: '/var/tmp/portage/app-emulation/img-0.5.6/work/img-0.5.6/src/github.com/genuinetools/img'
 * S: '/var/tmp/portage/app-emulation/img-0.5.6/work/img-0.5.6'