.
Thread 4 (Thread 0x7ff127fff700 (LWP 1361)):
#0  0x00007ff134430773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007ff134eb2408 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ff134eb2c32 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ff1358abbd6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007ff134ed79a6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007ff134701edc in start_thread (arg=0x7ff127fff700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7ff127fff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3274539835990038243, 140673825171632, 140673734932928, 0, 3, 3273044499547466013, 3273017135843420445}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007ff13443c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7ff12ce0e700 (LWP 1360)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216
No locals.
#1  0x00007ff1314034d5 in ?? () from /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0
No symbol table info available.
#2  0x00007ff134e8648f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ff134e86ce1 in g_async_queue_timed_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007ff134ed9de7 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007ff134ed79a6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007ff134701edc in start_thread (arg=0x7ff12ce0e700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7ff12ce0e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3274539835990038243, 140735602679776, 140673816783296, 0, 3, 3273033497451866397, 3273017135843420445}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ff13443c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7ff12d60f700 (LWP 1354)):
#0  0x00007ff134430773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007ff134eb2408 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ff134eb2c32 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ff12da29c7b in ?? () from /usr/lib/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007ff134ed79a6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007ff134701edc in start_thread (arg=0x7ff12d60f700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7ff12d60f700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3274539835990038243, 140735602679328, 140673825176000, 0, 3, 3273032396329625885, 3273017135843420445}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007ff13443c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7ff136831940 (LWP 1353)):
#0  0x00007ff134925c6f in FT_Set_Transform () from /usr/lib/x86_64-linux-gnu/libfreetype.so.6
No symbol table info available.
#1  0x00007ff134c2b078 in _cairo_ft_unscaled_font_set_scale (unscaled=0x19d5e90, scale=<optimized out>) at /build/buildd/cairo-1.10.2/src/cairo-ft-font.c:780
        status = CAIRO_STATUS_SUCCESS
        sf = {x_scale = 32, y_scale = 32, shape = {{1, 0}, {0, 1}}}
        mat = {xx = 65536, xy = 0, yx = 0, yy = 65536}
        error = <optimized out>
        __PRETTY_FUNCTION__ = "_cairo_ft_unscaled_font_set_scale"
#2  0x00007ff134c2de4f in _cairo_ft_font_face_scaled_font_create (abstract_font_face=0x1a1c740, font_matrix=0x7ff134e6a1a0, ctm=0x7ff134e6a228, options=0x7fff8f9ad860, font_out=0x7fff8f9ad628) at /build/buildd/cairo-1.10.2/src/cairo-ft-font.c:1845
        font_face = 0x1a1c740
        scaled_font = 0x1b6af40
        face = 0x7ff134ead9db
        metrics = <optimized out>
        fs_metrics = {ascent = 2.1219957751551716e-314, descent = 6.9532626429607409e-310, height = 0, max_x_advance = 6.9532626429805036e-310, max_y_advance = 6.9532626429757605e-310}
        status = <optimized out>
        unscaled = 0x19d5e90
        __PRETTY_FUNCTION__ = "_cairo_ft_font_face_scaled_font_create"
#3  0x00007ff134bf105f in INT_cairo_scaled_font_create (font_face=0x1a1c740, font_matrix=<optimized out>, ctm=<optimized out>, options=0x7fff8f9ad860) at /build/buildd/cairo-1.10.2/src/cairo-scaled-font.c:1053
        status = <optimized out>
        font_map = 0x1a9a000
        key = {hash_entry = {hash = 1442930910}, status = CAIRO_STATUS_SUCCESS, ref_count = {ref_count = 32753}, user_data = {size = 479443869, num_elements = 0, element_size = 912649926, elements = 0x3ff0000000000000, is_snapshot = 29}, original_font_face = 0x7fff8f9ad820, font_face = 0x1a1c740, font_matrix = {xx = 32, yx = 0, xy = 0, yy = 32, x0 = 0, y0 = 0}, ctm = {xx = 1, yx = 0, xy = 0, yy = 1, x0 = 0, y0 = 0}, options = {antialias = CAIRO_ANTIALIAS_SUBPIXEL, subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB, lcd_filter = CAIRO_LCD_FILTER_DEFAULT, hint_style = CAIRO_HINT_STYLE_FULL, hint_metrics = CAIRO_HINT_METRICS_ON}, placeholder = 0, holdover = 0, finished = 0, scale = {xx = 6.9502180032529787e-310, yx = 6.9532626429891991e-310, xy = 2.36876744782111e-315, yy = 6.9502180002415497e-310, x0 = 6.9532626429911754e-310, y0 = 6.9502180032106866e-310}, scale_inverse = {xx = 6.950217905079121e-310, yx = 0, xy = 6.9502180002415497e-310, yy = 2.4703282292062327e-323, x0 = 0, y0 = 6.9531436082559572e-310}, max_scale = 6.9502180032106866e-310, extents = {ascent = 0, descent = 6.9532626429951279e-310, height = 6.9502180135666978e-310, max_x_advance = 6.950217905079121e-310, max_y_advance = 0}, fs_extents = {ascent = 0, descent = 0, height = 6.9502180032529787e-310, max_x_advance = 2.121995791459338e-314, max_y_advance = 6.9502180135666978e-310}, mutex = {__data = {__lock = 0, __count = 0, __owner = 884686681, __nusers = 32753, __kind = 0, __spins = 0, __list = {__prev = 0x7ff100000000, __next = 0x7fff8f9ad820}}, __size = "\000\000\000\000\000\000\000\000Y?\273\064\361\177", '\000' <repeats 14 times>"\361, \177\000\000 ؚ\217\377\177\000", __align = 0}, glyphs = 0x1b48230, glyph_pages = {next = 0x0, prev = 0x7ff136877620}, cache_frozen = -1885677536, global_cache_frozen = 1, surface_backend = 0x7ff134bf728d, surface_private = 0x7ff134363310, backend = 0x1b48358, link = {next = 0x7fff8f9ad860, prev = 0x1b48358}}
        old = 0x0
        scaled_font = 0x0
        dead = <optimized out>
        det = <optimized out>
        __PRETTY_FUNCTION__ = "cairo_scaled_font_create"
#4  0x00007ff134bcf575 in _cairo_gstate_ensure_scaled_font (gstate=0x7ff134e6a138) at /build/buildd/cairo-1.10.2/src/cairo-gstate.c:1803
        status = <optimized out>
        options = {antialias = CAIRO_ANTIALIAS_SUBPIXEL, subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB, lcd_filter = CAIRO_LCD_FILTER_DEFAULT, hint_style = CAIRO_HINT_STYLE_FULL, hint_metrics = CAIRO_HINT_METRICS_ON}
        scaled_font = <optimized out>
#5  _cairo_gstate_ensure_scaled_font (gstate=0x7ff134e6a138) at /build/buildd/cairo-1.10.2/src/cairo-gstate.c:1787
        status = 1575604479
#6  0x00007ff134bd1f78 in _cairo_gstate_text_to_glyphs (gstate=0x7ff134e6a138, x=<optimized out>, y=<optimized out>, utf8=0x1a16240 "ubuntu", utf8_len=6, glyphs=0x7fff8f9ad920, num_glyphs=0x7fff8f9ad93c, clusters=0x0, num_clusters=0x0, cluster_flags=0x0) at /build/buildd/cairo-1.10.2/src/cairo-gstate.c:1844
        status = <optimized out>
#7  0x00007ff134bc93e2 in cairo_text_extents (cr=0x7ff134e69f70, utf8=0x1a16240 "ubuntu", extents=0x7fff8f9ad990) at /build/buildd/cairo-1.10.2/src/cairo.c:3300
        status = <optimized out>
        glyphs = 0x0
        num_glyphs = <optimized out>
        x = 0
        y = 0
#8  0x000000000040b243 in ?? ()
No symbol table info available.
#9  0x00007ff135f20c33 in ?? () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#10 0x00007ff136066500 in ?? () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#11 0x00007ff135172ed4 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#12 0x00007ff135185fb4 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#13 0x00007ff13518f626 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#14 0x00007ff13518f962 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#15 0x00007ff13607925a in ?? () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#16 0x00007ff1360793a1 in gtk_widget_send_expose () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#17 0x00007ff135f20b24 in gtk_main_do_event () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#18 0x00007ff135b658c7 in ?? () from /usr/lib/libgdk-3.so.0
No symbol table info available.
#19 0x00007ff135b65863 in ?? () from /usr/lib/libgdk-3.so.0
No symbol table info available.
#20 0x00007ff135b64e9f in ?? () from /usr/lib/libgdk-3.so.0
No symbol table info available.
#21 0x00007ff135b65338 in gdk_window_process_all_updates () from /usr/lib/libgdk-3.so.0
No symbol table info available.
#22 0x00007ff135e8da89 in ?? () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#23 0x00007ff135b4a98f in ?? () from /usr/lib/libgdk-3.so.0
No symbol table info available.
#24 0x00007ff134eb1efd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#25 0x00007ff134eb26f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#26 0x00007ff134eb2c32 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#27 0x00007ff135f1fbfd in gtk_main () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#28 0x00000000004087cc in ?? ()
No symbol table info available.
#29 0x00007ff13437c30d in __libc_start_main (main=0x406130, argc=1, ubp_av=0x7fff8f9ae478, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8f9ae468) at libc-start.c:226
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3274539835990038243, 4219216, 140735602680944, 0, 0, 3274504419297896733, 3273016531992357149}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x40d1d0, 0x7fff8f9ae478}, data = {prev = 0x0, cleanup = 0x0, canceltype = 4248016}}}
        not_first_call = <optimized out>
#30 0x0000000000406179 in ?? ()
No symbol table info available.
#31 0x00007fff8f9ae468 in ?? ()
No symbol table info available.
#32 0x000000000000001c in ?? ()
No symbol table info available.
#33 0x0000000000000001 in ?? ()
No symbol table info available.
#34 0x00007fff8f9afddf in ?? ()
No symbol table info available.
#35 0x0000000000000000 in ?? ()
No symbol table info available.