$ perl6 killit.p6
*** Error in `/home/jeff/perl6/bin/moar': double free or corruption (!prev): 0x00002ad5b0147070 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x2ad5a8b3c7e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x8037a)[0x2ad5a8b4537a]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x2ad5a8b4953c]
//home/jeff/perl6/lib/libmoar.so(+0x2266af)[0x2ad5a838b6af]
[0x2ad5aa6f1ce8]
======= Memory map: ========
00400000-00402000 r-xp 00000000 fc:09 888145                             /home/jeff/perl6/bin/moar
00602000-00603000 r--p 00002000 fc:09 888145                             /home/jeff/perl6/bin/moar
00603000-00604000 rw-p 00003000 fc:09 888145                             /home/jeff/perl6/bin/moar
00a4f000-039f1000 rw-p 00000000 00:00 0                                  [heap]
...