Process 12012 (LightTable) of user 1000 dumped core.

        Stack trace of thread 12012:
        #0  0x00000000010c81b5 n/a (LightTable)
        #1  0x00007fd4300987ff hb_font_funcs_set_nominal_glyph_func (libharfbuzz.so.0)
        #2  0x00007fd4318aa0b1 n/a (libpangoft2-1.0.so.0)
        #3  0x00007fd436d9b83e pango_shape_full (libpango-1.0.so.0)
        #4  0x00007fd436d85f17 n/a (libpango-1.0.so.0)
        #5  0x00007fd436d869b6 n/a (libpango-1.0.so.0)
        #6  0x00007fd436d870f7 n/a (libpango-1.0.so.0)
        #7  0x00007fd436d8aa54 pango_layout_get_unknown_glyphs_count (libpango-1.0.so.0)
        #8  0x00007fd437a7678c n/a (libgtk-x11-2.0.so.0)
        #9  0x00007fd437a798a6 n/a (libgtk-x11-2.0.so.0)
        #10 0x00007fd435e78b9d g_type_create_instance (libgobject-2.0.so.0)
        #11 0x00007fd435e59259 n/a (libgobject-2.0.so.0)
        #12 0x00007fd435e5aa7d g_object_new_with_properties (libgobject-2.0.so.0)
        #13 0x00007fd435e5b532 g_object_new (libgobject-2.0.so.0)
        #14 0x000000000196eaea n/a (LightTable)
        #15 0x0000000002f45a96 _ZN9brightray16BrowserMainParts18ToolkitInitializedEv (LightTable)
        #16 0x000000000229f7a7 n/a (LightTable)
        #17 0x00000000022a04eb n/a (LightTable)
        #18 0x0000000002298eed n/a (LightTable)
        #19 0x00000000010a7881 n/a (LightTable)
        #20 0x00000000010a6780 n/a (LightTable)
        #21 0x0000000002e6fa97 main (LightTable)
        #22 0x00007fd431ad206b __libc_start_main (libc.so.6)
        #23 0x0000000000523d51 _start (LightTable)

Strace tail:
access("/usr/share/fonts/TTF/DejaVuSans.ttf", R_OK) = 0
openat(AT_FDCWD, "/usr/share/fonts/TTF/DejaVuSans.ttf", O_RDONLY) = 26
fcntl(26, F_SETFD, FD_CLOEXEC)          = 0
fstat(26, {st_mode=S_IFREG|0644, st_size=757076, ...}) = 0
mmap(NULL, 757076, PROT_READ, MAP_PRIVATE, 26, 0) = 0x7f9801699000
close(26)                               = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x58} ---
+++ killed by SIGSEGV (core dumped) +++