jruby-launcher spec failure

gistfile1.txt

kingtim@tumult:~/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java$ ~/workspace/jruby/bin/jruby -S rspec ./spec/launcher_spec.rb  
*** glibc detected *** /home/kingtim/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java/build/home/bin/jruby: free(): invalid pointer: 0x0930a4d0 ***
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(+0x6ebc2)[0xb755ebc2]
/lib/i386-linux-gnu/libc.so.6(+0x6f862)[0xb755f862]
/lib/i386-linux-gnu/libc.so.6(cfree+0x6d)[0xb756294d]
/usr/lib/i386-linux-gnu/libstdc++.so.6(_ZdlPv+0x1f)[0xb773880f]
/usr/lib/i386-linux-gnu/libstdc++.so.6(_ZNSs4_Rep10_M_destroyERKSaIcE+0x1b)[0xb771fc4b]
/home/kingtim/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java/build/home/bin/jruby[0x804b9df]
/home/kingtim/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java/build/home/bin/jruby[0x80496f3]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb7509113]
/home/kingtim/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java/build/home/bin/jruby[0x8049731]
======= Memory map: ========
08048000-08053000 r-xp 00000000 08:01 3166325    /home/kingtim/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java/build/home/bin/jruby
08053000-08054000 r-xp 0000a000 08:01 3166325    /home/kingtim/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java/build/home/bin/jruby
08054000-08055000 rwxp 0000b000 08:01 3166325    /home/kingtim/workspace/jruby/lib/ruby/gems/1.8/gems/jruby-launcher-1.0.9-java/build/home/bin/jruby
0930a000-0932b000 rwxp 00000000 00:00 0          [heap]
b7300000-b7321000 rwxp 00000000 00:00 0 
b7321000-b7400000 ---p 00000000 00:00 0 
b74c4000-b74c6000 rwxp 00000000 00:00 0 
b74c6000-b74ee000 r-xp 00000000 08:01 4202091    /lib/i386-linux-gnu/libm-2.13.so
b74ee000-b74ef000 r-xp 00028000 08:01 4202091    /lib/i386-linux-gnu/libm-2.13.so
b74ef000-b74f0000 rwxp 00029000 08:01 4202091    /lib/i386-linux-gnu/libm-2.13.so
b74f0000-b7666000 r-xp 00000000 08:01 4202087    /lib/i386-linux-gnu/libc-2.13.so
b7666000-b7668000 r-xp 00176000 08:01 4202087    /lib/i386-linux-gnu/libc-2.13.so
b7668000-b7669000 rwxp 00178000 08:01 4202087    /lib/i386-linux-gnu/libc-2.13.so
b7669000-b766d000 rwxp 00000000 00:00 0 
b766d000-b7689000 r-xp 00000000 08:01 4202083    /lib/i386-linux-gnu/libgcc_s.so.1
b7689000-b768a000 r-xp 0001b000 08:01 4202083    /lib/i386-linux-gnu/libgcc_s.so.1
b768a000-b768b000 rwxp 0001c000 08:01 4202083    /lib/i386-linux-gnu/libgcc_s.so.1
b768b000-b7769000 r-xp 00000000 08:01 4603092    /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
b7769000-b776a000 ---p 000de000 08:01 4603092    /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
b776a000-b776e000 r-xp 000de000 08:01 4603092    /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
b776e000-b776f000 rwxp 000e2000 08:01 4603092    /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
b776f000-b7776000 rwxp 00000000 00:00 0 
b7789000-b778c000 rwxp 00000000 00:00 0 
b778c000-b778d000 r-xp 00000000 00:00 0          [vdso]
b778d000-b77ab000 r-xp 00000000 08:01 4202084    /lib/i386-linux-gnu/ld-2.13.so
b77ab000-b77ac000 r-xp 0001d000 08:01 4202084    /lib/i386-linux-gnu/ld-2.13.so
b77ac000-b77ad000 rwxp 0001e000 08:01 4202084    /lib/i386-linux-gnu/ld-2.13.so
bfcff000-bfd20000 rw-p 00000000 00:00 0          [stack]
Aborted