(chroot) Microknoppix /usr/portage/distfiles # emerge --info
--- Invalid atom in /etc/portage/package.mask/app-text/docbook-xml-dtd: =app-text/docbook-xml-dtd-4.2-r3 ~amd64
Portage 2.3.76 (python 3.6.9-final-0, default/linux/amd64/17.1, gcc-8.3.0, glibc-2.29-r2, 5.2.5-64 x86_64)
=================================================================
System uname: Linux-5.2.5-64-x86_64-Intel-R-_Xeon-R-_CPU_E5-2643_v2_@_3.50GHz-with-gentoo-2.6
KiB Mem:    65791636 total,  59170260 free
KiB Swap:   71303160 total,  71303160 free
Timestamp of repository gentoo: Mon, 28 Oct 2019 10:30:01 +0000
Head commit of repository gentoo: f1c2166be1ac171e45c1c4299ecb853485db0135
sh bash 4.4_p23-r1
ld GNU ld (Gentoo 2.32 p2) 2.32.0
app-shells/bash:          4.4_p23-r1::gentoo
dev-lang/perl:            5.28.2-r1::gentoo
dev-lang/python:          2.7.16::gentoo, 3.6.9::gentoo
sys-apps/baselayout:      2.6-r1::gentoo
sys-apps/openrc:          0.41.2::gentoo
sys-apps/sandbox:         2.13::gentoo
sys-devel/autoconf:       2.69-r4::gentoo
sys-devel/automake:       1.16.1-r1::gentoo
sys-devel/binutils:       2.32-r1::gentoo
sys-devel/gcc:            8.3.0-r1::gentoo
sys-devel/gcc-config:     2.0::gentoo
sys-devel/libtool:        2.4.6-r3::gentoo
sys-devel/make:           4.2.1-r4::gentoo
sys-kernel/linux-headers: 4.19::gentoo (virtual/os-headers)
sys-libs/glibc:           2.29-r2::gentoo
Repositories:

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

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="@FREE skype-4.0.0.7-copyright skype-eula RTCW-ETEULA AdobeFlash-10.1 AdobeFlash-10.3 AdobeFlash-11.x LOKI-EULA Q3AEULA FraunhoferFDK"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=sandybridge -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/polkit-1/actions /var/bind"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=sandybridge -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--autounmask=n"
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-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="ftp://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/"
LANG="de_DE.utf8"
LC_ALL="de_DE.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="de en"
MAKEOPTS="-j25"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
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="/var/tmp"
USE="X a52 aac acl acpi adns alsa amd64 ao apm arts audiofile avi bash-completion berkdb bitmap-fonts bzip2 cairo cdda cdparanoia cdr cgi cli cracklib crypt cscope css curl curlwrappers custom-optimization cxx dbus dga directfb divx dri dts dvd dvdr emacs encode enscript exif expat fam fbcon fbcondecor ffmpeg flac fltk fortran ftp gd gdbm geoip ghoto gif gimp glut gmp gnutls gphoto2 gpm gstreamer gtk guile gzip hal hddtemp iconv icq icu ieee1394 imagemagick imap injection ipv6 irc jack javascript jbig jpeg jpeg2k lame libcaca libffi libgphoto2 libmng libnotify libsamplerate libsndfile libtirpc lm_sensors lzma lzo mad mailwrapper mhash midi mikmod mmx mng modplug mp3 mp4 mpeg mplayer mptov msn multilib musepack mysqli ncurses nfs nls nntp nptl nptlonly nvidia objc ogg oggvorbis openal opengl openmp oss pam pcre pdf pdo perl php plasma png portaudio posix qt3 qt3support qt5 quicktime readline realmedia recode rss sdl seccomp shorten shout sid smp sockets socks5 sound sox speex split-usr sse sse2 sse3 ssl sslv3 subversion svg syslog szip tcl tcpd timidity truetype unicode v4l v4l2 vcd vhosts vorbis wavpack win32codecs winbind wma wmf wxwidgets x264 xattr xcomposite xml xpm xvid zblib zeroconf zlib zsh-completion" ABI_X86="64" ADA_TARGET="gnat_2018" 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 sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" L10N="de" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-1" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby24 ruby25" USERLAND="GNU" VIDEO_CARDS="intel" 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, INSTALL_MASK, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS