Calculating dependencies... done!
[ebuild     U  ] sys-apps/busybox-1.23.0 [1.21.0] USE="ipv6 pam static systemd -debug% -livecd -make-symlinks -math -mdev -savedconfig (-selinux) -sep-usr -syslog" 2,201 KiB
[ebuild     U  ] sys-apps/kmod-19 [18-r1] USE="tools zlib -debug -doc -lzma -python -static-libs" PYTHON_TARGETS="python2_7 python3_3 -python3_4" 1,440 KiB
[ebuild     U  ] sys-fs/udev-init-scripts-27 [26-r2] 4 KiB
[ebuild     U  ] sys-apps/openrc-0.13.7 [0.12.4] USE="ncurses netifrc pam unicode -debug -newnet (-prefix) (-selinux) -static-libs -tools" 148 KiB
[blocks b      ] <sys-apps/openrc-0.13 ("<sys-apps/openrc-0.13" is blocking sys-fs/udev-init-scripts-27, sys-apps/kmod-19)
[blocks B      ] <sys-apps/systemd-217 ("<sys-apps/systemd-217" is blocking sys-apps/kmod-19)

Total: 4 packages (4 upgrades), Size of downloads: 3,791 KiB
Conflict: 2 blocks (1 unsatisfied)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.