$ BT_CHECKS=test_bt_edit_application_create G_DEBUG="fatal_warnings" make bt_edit.gdb
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Reading symbols from /home/rffontenelle/aur/buzztrax/src/buzztrax-0.10.2/.libs/lt-bt_edit...done.
(gdb) r
Starting program: /home/rffontenelle/aur/buzztrax/src/buzztrax-0.10.2/.libs/lt-bt_edit 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Running suite(s): BtAboutDialog
 BtChangeLog
 BtCrashRecoverDialog
 BtEditApplication
[New Thread 0x7fffe6aa6700 (LWP 16748)]
[New Thread 0x7fffe62a5700 (LWP 16749)]
[New Thread 0x7fffd663e700 (LWP 16751)]
[New Thread 0x7fffd5e3d700 (LWP 16752)]
[New Thread 0x7fffd4fc8700 (LWP 16753)]
[Thread 0x7fffd4fc8700 (LWP 16753) exited]
[New Thread 0x7fffd4fc8700 (LWP 16755)]
[Thread 0x7fffd4fc8700 (LWP 16755) exited]
[New Thread 0x7fffd4fc8700 (LWP 16756)]
[Thread 0x7fffd4fc8700 (LWP 16756) exited]
lt-bt_edit: cairo-surface.c:1653: cairo_surface_mark_dirty_rectangle: Assertion `! _cairo_surface_has_mime_data (surface)' failed.

Thread 1 "lt-bt_edit" received signal SIGABRT, Aborted.
0x00007ffff4492295 in raise () from /usr/lib/libc.so.6
(gdb) bt
#0  0x00007ffff4492295 in raise () from /usr/lib/libc.so.6
#1  0x00007ffff44936da in abort () from /usr/lib/libc.so.6
#2  0x00007ffff448b297 in __assert_fail_base () from /usr/lib/libc.so.6
#3  0x00007ffff448b342 in __assert_fail () from /usr/lib/libc.so.6
#4  0x00007ffff572656f in cairo_surface_mark_dirty_rectangle () from /usr/lib/libcairo.so.2
#5  0x00007ffff57275c5 in cairo_surface_mark_dirty () from /usr/lib/libcairo.so.2
#6  0x00007ffff5e73355 in gdk_pixbuf_get_from_window (src=src@entry=0x120d170, src_x=src_x@entry=0, src_y=src_y@entry=0, width=800, height=600)
    at gdkpixbuf-drawable.c:107
#7  0x000000000049b011 in make_screenshot (widget=widget@entry=0xdcc320) at tests/bt-check-ui.c:355
#8  0x000000000049b0e0 in check_make_widget_screenshot (widget=0xdcc320, name=0x0) at tests/bt-check-ui.c:453
#9  0x00000000004247c2 in test_bt_edit_application_create (_i=<optimized out>) at tests/ui/edit/e-edit-application.c:79
#10 0x00007ffff4a225fb in tcase_run_tfun_nofork (sr=sr@entry=0x8f4900, tc=tc@entry=0x8f4f10, i=i@entry=0, tfun=<optimized out>, tfun=<optimized out>)
    at check_run.c:390
#11 0x00007ffff4a229bc in srunner_iterate_tcase_tfuns (tc=0x8f4f10, sr=0x8f4900) at check_run.c:231
#12 srunner_run_tcase (tc=0x8f4f10, sr=0x8f4900) at check_run.c:373
#13 srunner_iterate_suites (print_mode=CK_SILENT, tcname=<optimized out>, sname=0x0, sr=0x8f4900) at check_run.c:195
#14 srunner_run (sr=sr@entry=0x8f4900, sname=sname@entry=0x0, tcname=<optimized out>, tcname@entry=0x0, print_mode=print_mode@entry=CK_NORMAL)
    at check_run.c:782
#15 0x00007ffff4a22f5b in srunner_run_all (sr=sr@entry=0x8f4900, print_mode=print_mode@entry=CK_NORMAL) at check_run.c:739
#16 0x000000000041f817 in main (argc=<optimized out>, argv=<optimized out>) at tests/m-bt-edit.c:215
(gdb)