Process 92037 launched: 'nimarchive/tests/tnimarchive' (x86_64)
tnimarchive(92037,0x10024e5c0) malloc: *** error for object 0x500430: pointer being freed was not allocated
tnimarchive(92037,0x10024e5c0) malloc: *** set a breakpoint in malloc_error_break to debug
Process 92037 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
    frame #0: 0x00007fff7b6502c6 libsystem_kernel.dylib`__pthread_kill + 10
libsystem_kernel.dylib`__pthread_kill:
->  0x7fff7b6502c6 <+10>: jae    0x7fff7b6502d0            ; <+20>
    0x7fff7b6502c8 <+12>: movq   %rax, %rdi
    0x7fff7b6502cb <+15>: jmp    0x7fff7b64a457            ; cerror_nocancel
    0x7fff7b6502d0 <+20>: retq
Target 0: (tnimarchive) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
  * frame #0: 0x00007fff7b6502c6 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00007fff7b70bbf1 libsystem_pthread.dylib`pthread_kill + 284
    frame #2: 0x00007fff7b5ba6a6 libsystem_c.dylib`abort + 127
    frame #3: 0x00007fff7b6c9077 libsystem_malloc.dylib`malloc_vreport + 545
    frame #4: 0x00007fff7b6c8e38 libsystem_malloc.dylib`malloc_report + 151
    frame #5: 0x000000010007b4f9 tnimarchive`free_sconv_object(sc=0x00000001005003d0) at archive_string.c:1303:2
    frame #6: 0x000000010007b4a7 tnimarchive`archive_string_conversion_free(a=0x0000000101000000) at archive_string.c:1810:3
    frame #7: 0x0000000100083f05 tnimarchive`__archive_clean(a=0x0000000101000000) at archive_util.c:76:2
    frame #8: 0x000000010002766f tnimarchive`_archive_read_free(_a=0x0000000101000000) at archive_read.c:1136:2
    frame #9: 0x0000000100084db5 tnimarchive`archive_free(a=0x0000000101000000) at archive_virtual.c:62:10
    frame #10: 0x0000000100084ea5 tnimarchive`archive_read_free(a=0x0000000101000000) at archive_virtual.c:102:9
    frame #11: 0x000000010010cef9 tnimarchive`NimMainModule at tnimarchive.nim:21:26
    frame #12: 0x000000010010cbb9 tnimarchive`NimMainInner at system.nim:3617:2
    frame #13: 0x000000010010cfaa tnimarchive`NimMain at system.nim:3625:2
    frame #14: 0x000000010010cff7 tnimarchive`main(argc=1, args=0x00007ffeefbff978, env=0x00007ffeefbff988) at system.nim:3632:2
    frame #15: 0x00007fff7b5153d5 libdyld.dylib`start + 1
    frame #16: 0x00007fff7b5153d5 libdyld.dylib`start + 1