* Package:    net-misc/mikutter-3.2.7
 * Repository: gentoo
 * Maintainer: naota@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux libnotify ruby_targets_ruby20 ruby_targets_ruby21 userland_GNU
 * FEATURES:   preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
 * Running unpack phase for all ...
>>> Unpacking mikutter.3.2.7.tar.gz to /var/tmp/portage/net-misc/mikutter-3.2.7/work/all
>>> Source unpacked in /var/tmp/portage/net-misc/mikutter-3.2.7/work
>>> Preparing source in /var/tmp/portage/net-misc/mikutter-3.2.7/work ...
 * Running prepare phase for all ...
 * Running source copy phase for ruby20 ...
 * Running source copy phase for ruby21 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/net-misc/mikutter-3.2.7/work ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/net-misc/mikutter-3.2.7/work ...
>>> Source compiled.
>>> Test phase [not enabled]: net-misc/mikutter-3.2.7

>>> Install mikutter-3.2.7 into /var/tmp/portage/net-misc/mikutter-3.2.7/image/ category net-misc
 * Running install phase for ruby20 ...
 * ERROR: net-misc/mikutter-3.2.7::gentoo failed (install phase):
 *   USE Flag 'ruby_targets_ruby22' not in IUSE for net-misc/mikutter-3.2.7
 * 
 * Call stack:
 *          ebuild.sh, line   93:  Called src_install
 *        environment, line 4122:  Called ruby-ng_src_install
 *        environment, line 3928:  Called _ruby_each_implementation 'each_ruby_install'
 *        environment, line  488:  Called _ruby_invoke_environment 'ruby20' 'each_ruby_install'
 *        environment, line  583:  Called each_ruby_install
 *        environment, line  760:  Called use 'ruby_targets_ruby22'
 *   phase-helpers.sh, line  200:  Called die
 * The specific snippet of code:
 *   				die "USE Flag '${u}' not in IUSE for ${CATEGORY}/${PF}"
 * 
 * If you need support, post the output of `emerge --info '=net-misc/mikutter-3.2.7::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=net-misc/mikutter-3.2.7::gentoo'`.
!!! When you file a bug report, please include the following information:
GENTOO_VM=  CLASSPATH="" JAVA_HOME="/etc/java-config-2/current-system-vm"
JAVACFLAGS="" COMPILER=""
and of course, the output of emerge --info =mikutter-3.2.7
 * The complete build log is located at '/var/log/portage/net-misc:mikutter-3.2.7:20150917-001338.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/net-misc/mikutter-3.2.7/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-misc/mikutter-3.2.7/temp/environment'.
 * Working directory: '/var/tmp/portage/net-misc/mikutter-3.2.7/work/ruby20/mikutter'
 * S: '/var/tmp/portage/net-misc/mikutter-3.2.7/work/ruby20/mikutter'