Bugzilla Bug 152597

Here the build output:

>>> Emerging (1 of 411) dev-java/avalon-logkit-1.2-r1 to /
 * LogKit-1.2-src.tar.gz MD5 ;-) ...                                      [ ok
]
 * LogKit-1.2-src.tar.gz RMD160 ;-) ...                                   [ ok
]
 * LogKit-1.2-src.tar.gz SHA1 ;-) ...                                     [ ok
]
 * LogKit-1.2-src.tar.gz SHA256 ;-) ...                                   [ ok
]
 * LogKit-1.2-src.tar.gz size ;-) ...                                     [ ok
]
 * checking ebuild checksums ;-) ...                                      [ ok
]
 * checking auxfile checksums ;-) ...                                     [ ok
]
 * checking miscfile checksums ;-) ...                                    [ ok
]
 * checking LogKit-1.2-src.tar.gz ;-) ...                                 [ ok
]
 * Using: sun-jdk-1.5
>>> Unpacking source...
>>> Unpacking LogKit-1.2-src.tar.gz to /var/tmp/portage/dev-java/avalon-logkit-1.2-r1/work
tar: A lone zero block at 4846
!!! ERROR: Package jms was not found!

!!! ERROR: dev-java/avalon-logkit-1.2-r1 failed.
Call stack:
  ebuild.sh, line 1568:   Called dyn_unpack
  ebuild.sh, line 708:   Called src_unpack
  avalon-logkit-1.2-r1.ebuild, line 61:   Called java-pkg_jar-from 'jms'
  java-utils-2.eclass, line 715:   Called die

!!! There was a problem getting the classpath for jms.
!!! If you need support, post the topmost build error, and the call stack if
relevant.

!!! When you file a bug report, please include the following information:
GENTOO_VM=sun-jdk-1.5  CLASSPATH="" JAVA_HOME="/opt/sun-jdk-1.5.0.08"
JAVACFLAGS="-source 1.3 -target 1.3" COMPILER=""
and of course, the output of emerge --info

emerge --info:

h0486tux distfiles # emerge --info
Portage 2.1.2_pre3-r7 (default-linux/x86/2006.0, gcc-3.4.6, glibc-2.4-r3,
2.6.16-gentoo-r8 i686)
=================================================================
System uname: 2.6.16-gentoo-r8 i686 Intel(R) Pentium(R) 4 CPU 1.80GHz
Gentoo Base System version 1.12.5
Last Sync: Mon, 23 Oct 2006 01:47:01 +0000
app-admin/eselect-compiler: [Not Present]
dev-java/java-config: 1.3.7, 2.0.30
dev-lang/python:     2.3.5, 2.4.3-r4
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     [Not Present]
dev-util/confcache:  [Not Present]
sys-apps/sandbox:    1.2.18.1
sys-devel/autoconf:  2.13, 2.60
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils:  2.17
sys-devel/gcc-config: 1.3.14
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.17-r1
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=pentium4 -O3 -pipe -funroll-loops -fomit-frame-pointer
-fprefetch-loop-arrays"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /opt/openjms/config /usr/kde/3.4/env
/usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3.5/env
/usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/lib/mozilla/defaults/pref
/usr/share/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/eselect/compiler
/etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo
/etc/texmf/web2c"
CXXFLAGS="-march=pentium4 -O3 -pipe -funroll-loops -fomit-frame-pointer
-fprefetch-loop-arrays"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict"
GENTOO_MIRRORS="http://gentoo.osuosl.org/"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://ssvsdev.hlyw.pvt/portage"
USE="X Xaw3d a52 aac aalib acl aclpi acpi adns aim alsa apache2 apm arts
artworkextra atlas audiofile avalon avi bash-completion bcmath berkdb
bitmap-fonts bl bonobo browserplugin bzip2 bzlib cairo calendar cdb cddb cdr
chroot cli cluster cpdflib cracklib crypt cscope ctype cups curl curlwrappers
dba dbase dbm dbus dbx dedicated dga dio directfb divx4linux dlloader dmacs dri
dts dv dvb dvd dvdr dvdread dynagraph edl eds elibc_glibc emacs-w3 emboss
encode esd ethereal evo examples exif extraengine fam fastcgi fbcon fdftk
ffmpeg fftw filepro firebird firefox flac flash flatfile font-server foomaticdb
fortran fpx freetds ftp gb gcj gd gdbm geometry ggi gif gimpprint ginac glitz
glut gmp gnome gnomedb gnustep gnutls gphoto2 gpm graphviz gstreamer gtk gtk2
gtkhtml guile hal icq imagemagick imap imlib inifile innodb input_devices_evdev
input_devices_keyboard input_devices_mouse insecure-savers isdnlog ithreads
jabber jack java javamail javascript jbig jikes jms jmx jpeg jpeg2k junit
jython kerberos kernel_linux krb4 ladcca lcms ldap leim libcaca libg++ libgda
libwrap libwww live mad maildir mailwrapper mcal mdb memlimit mhash mikmod
milter mime ming mmap mmx mmxext mng mono motif mozcalendar mozdevelop mozilla
mozsvg mozxmlterm mp3 mpeg mpi msn mssql mysql mysqli nas ncurses netcdf
nethack network new-login nis nls nntp nocd nodrm nptl nptlonly objc oci8 odbc
ofc offensive ogg oggvorbis openal opengl oracle oscar oss pam pascal pcntl
pcre pda pdflib perl perlsuid php plotutils png portaudio posix postgres ppds
pppd python qdbm qt qt3 qt4 quicktime raid readline real recode reflection
rhino rplay ruby samba sasl sdk sdl server session shared sharedmem silc
silverxp simplexml slang slp sndfile snmp soap sockets socks5 source sox speex
spell spl sql sqlite sse sse2 ssl stroke subversion svg svga sysvipc szip tcltk
tcpd tetex tga theora threads tidy tiff tokenizer toolbar truetype
truetype-fonts type1-fonts udev unicode usb userland_GNU v4l v4l2 vcd vhosts
video_cards_ati128 video_cards_r128 video_cards_rage128 videos vorbis wddx
win32codecs winbind wmf wxwindows x86 xanim xface xine xinerama xml xml2 xmlrpc
xorg xosd xpm xprint xrandr xsl xv xvid xvmc yahoo yaz zeo zlib"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS,
LINGUAS, PORTAGE_RSYNC_EXTRA_OPTS

Thanks,
Jason

Fixed in avalon-logkit-1.2-r2, thanks for reporting!