perl6-valgrind-m error

==5898== Syscall param write(buf) points to uninitialised byte(s)
==5898==    at 0x44A4FD3: __write_nocancel (in /lib/i386-linux-gnu/i686/cmov/libc-2.22.so)
==5898==    by 0x4437FF0: _IO_file_write@@GLIBC_2.1 (in /lib/i386-linux-gnu/i686/cmov/libc-2.22.so)
==5898==    by 0x44372D3: new_do_write (in /lib/i386-linux-gnu/i686/cmov/libc-2.22.so)
==5898==    by 0x44386BC: _IO_file_xsputn@@GLIBC_2.1 (in /lib/i386-linux-gnu/i686/cmov/libc-2.22.so)
==5898==    by 0x442DD4B: fwrite (in /lib/i386-linux-gnu/i686/cmov/libc-2.22.so)
==5898==    by 0x414740F: MVM_mast_to_file (in /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so)
==5898==    by 0x40CED1A: MVM_interp_run (in /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so)
==5898==    by 0x418E98C: MVM_vm_run_file (in /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so)
==5898==    by 0x8048C52: main (in /home/cbwood/.rakudobrew/moar-nom/install/bin/moar)
==5898==  Address 0x1068f6e7 is 2,373,311 bytes inside a block of size 2,438,828 alloc'd
==5898==    at 0x402E0F8: calloc (vg_replace_malloc.c:711)
==5898==    by 0x41467E5: MVM_mast_compile (in /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so)
==5898==    by 0x41473C7: MVM_mast_to_file (in /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so)
==5898==    by 0x40CED1A: MVM_interp_run (in /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so)
==5898==    by 0x418E98C: MVM_vm_run_file (in /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so)
==5898==    by 0x8048C52: main (in /home/cbwood/.rakudobrew/moar-nom/install/bin/moar)