tail end of output of `emerge -uavDN @worldD`

* Messages for package sys-devel/gdb-11.2:

 * ERROR: sys-devel/gdb-11.2::core-kit failed (compile phase):
 *   emake failed
 *
 * If you need support, post the output of `emerge --info '=sys-devel/gdb-11.2::core-kit'`,
 * the complete build log and the output of `emerge -pqv '=sys-devel/gdb-11.2::core-kit'`.
 * The complete build log is located at '/var/tmp/portage/sys-devel/gdb-11.2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-devel/gdb-11.2/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-devel/gdb-11.2/work/gdb-11.2'
 * S: '/var/tmp/portage/sys-devel/gdb-11.2/work/gdb-11.2'

 * Regenerating GNU info directory index...
 * Processed 146 info files.

 * IMPORTANT: config file '/etc/portage/package.use' needs updating.
 * See the CONFIGURATION FILES and CONFIGURATION FILES UPDATE TOOLS
 * sections of the emerge man page to learn how to update config files.
 * After world updates, it is important to remove obsolete packages with
 * emerge --depclean. Refer to `man emerge` for more information.