Hi, Using Ubuntu 18, i have a segfault after update and recompilation of notmuch at commit 73cebe6e7233f59ba26d9f7c05265b7776795818 (HEAD -> master, origin/master, origin/HEAD) Running : notmuch new (process:29765): GLib-GObject-WARNING **: 10:33:54.858: cannot register existing type 'GMimeStream' (process:29765): GLib-GObject-CRITICAL **: 10:33:54.859: g_type_register_static: assertion 'parent_type > 0' failed (process:29765): GLib-GObject-CRITICAL **: 10:33:54.859: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed [1] 29765 segmentation fault (core dumped) notmuch new Using GDB : (gdb) runStarting program: /home/reyman/Binaire/notmuch new[Thread debugging using libthread_db enabled]Using host libthread_db library "/lib/x86_64-linux- gnu/libthread_db.so.1". (process:32147): GLib-GObject-WARNING **: 10:42:03.024: cannot register existing type 'GMimeStream' (process:32147): GLib-GObject-CRITICAL **: 10:42:03.024: g_type_register_static: assertion 'parent_type > 0' failed (process:32147): GLib-GObject-CRITICAL **: 10:42:03.024: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed Program received signal SIGSEGV, Segmentation fault.0x00007ffff6969410 in g_mime_stream_construct () from /usr/lib/x86_64-linux-gnu/libgmime-3.0.so.0 Sébastien Rey-Coyrehourcq Research Engineer UMR IDEES 02.35.14.69.30 {Stronger security for your email, follow EFF tutorial : https://ssd.eff.org/}