bootstrap Gentoo prefix gcc error emerge --info '=sys-devel/

user@b70d59ff9703:/tmp/gentoo$ /tmp/gentoo/tmp/usr/bin/emerge --info '=sys-devel/gcc-8.2.0-r4::gentoo'
Portage 2.3.40.3-prefix (python 2.7.3-final-0, default/linux/amd64/17.0/no-multilib/prefix/kernel-3.2+, gcc-8.2.0, unavailable, 4.10.0-37-generic x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-4.10.0-37-generic-x86_64-with-debian-stretch-sid
KiB Mem:    16298732 total,   5131864 free
KiB Swap:   17050620 total,  17050620 free
Timestamp of repository gentoo: Mon, 26 Nov 2018 00:45:01 +0000
Head commit of repository gentoo: ed2d3fb84a3693ce1dc54974f11511ea72a351f5
sh bash 4.4_p23
ld GNU ld (GNU Binutils for Ubuntu) 2.26.1
app-shells/bash:      4.4_p23::gentoo
sys-devel/binutils:   2.31.1-r1::gentoo
sys-devel/gcc:        8.2.0-r4::gentoo
sys-devel/gcc-config: 2.0::gentoo
Repositories:

gentoo
    location: /tmp/gentoo/usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.prefix.bitzolder.nl/gentoo-portage-prefix
    priority: -1000
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-metamanifest: yes
    sync-rsync-extra-opts:
    sync-rsync-verify-max-age: 24

ACCEPT_KEYWORDS="amd64 ~amd64 ~amd64-linux"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/gentoo-release /etc/terminfo"
CXXFLAGS="-O2 -pipe -O2 -pipe"
DISTDIR="/tmp/gentoo/tmp/usr/portage/distfiles"
ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles force-prefix merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sfperms strict unknown-features-warn unmerge-logs unmerge-orphans unprivileged"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j2"
PKGDIR="/tmp/gentoo/tmp/usr/portage/packages"
PORTAGE_CONFIGROOT="/tmp/gentoo/tmp/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/tmp/gentoo/tmp/var/tmp"
USE="acl amd64 berkdb bzip2 cli crypt cxx dri fortran gdbm iconv ipv6 libtirpc ncurses nls nptl openmp pcre prefix readline seccomp ssl tcpd unicode zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon plan sheets stage words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php7-1" POSTGRES_TARGETS="postgres9_5 postgres10" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby23 ruby24" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

=================================================================
                        Package Settings
=================================================================

sys-devel/gcc-8.2.0-r4::gentoo was built with the following:
USE="cxx nptl openmp pch (pie) (prefix) sanitize ssp vtv (-altivec) -debug -doc (-fixed-point) -fortran -go -graphite (-hardened) (-jit) (-libssp) -mpx (-multilib) -nls -objc -objc++ -objc-gc -pgo -regression-test -systemtap (-vanilla)"
LDFLAGS="-L/tmp/gentoo/tmp/usr/lib -Wl,-rpath=/tmp/gentoo/tmp/usr/lib"