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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Crash on shutdown, Assertion 'a >= 0 && a < _JOB_TYPE_MAX_MERGING' failed"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=67427#c12">Comment # 12</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Crash on shutdown, Assertion 'a >= 0 && a < _JOB_TYPE_MAX_MERGING' failed"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=67427">bug 67427</a>
              from <span class="vcard"><a class="email" href="mailto:bugs.freedesktop.org@wizy.org" title="Ricardo M. Correia <bugs.freedesktop.org@wizy.org>"> <span class="fn">Ricardo M. Correia</span></a>
</span></b>
        <pre>FWIW, here is the stack trace of the systemd crash on NixOS:

(gdb) bt
#0  0x00006cb659188b0b in raise () from
/nix/store/zm4bhsm8lprkzvrjgqr0klfkvr21als4-glibc-2.17/lib/libpthread.so.0
#1  0x000000000040cbe1 in crash ()
#2  <signal handler called>
#3  0x00006cb658bf4fb5 in raise () from
/nix/store/zm4bhsm8lprkzvrjgqr0klfkvr21als4-glibc-2.17/lib/libc.so.6
#4  0x00006cb658bf6436 in abort () from
/nix/store/zm4bhsm8lprkzvrjgqr0klfkvr21als4-glibc-2.17/lib/libc.so.6
#5  0x0000000000460383 in log_assert ()
#6  0x0000000000460ad0 in log_assert_failed ()
#7  0x000000000047b5c6 in job_type_lookup_merge ()
#8  0x0000000000414672 in transaction_activate ()
#9  0x000000000040e684 in manager_add_job ()
#10 0x0000000000443f6d in bus_unit_queue_job ()
#11 0x000000000043fc1f in bus_manager_message_handler ()
#12 0x00006cb6593b3cb9 in _dbus_object_tree_dispatch_and_unlock () from
/nix/store/mv8dsy1q29ph6hdk6c96f252ww89z27m-dbus-libs-1.6.14/lib/libdbus-1.so.3
#13 0x00006cb6593a5e45 in dbus_connection_dispatch () from
/nix/store/mv8dsy1q29ph6hdk6c96f252ww89z27m-dbus-libs-1.6.14/lib/libdbus-1.so.3
#14 0x000000000043e82a in bus_dispatch ()
#15 0x0000000000411df8 in manager_loop ()
#16 0x000000000040a233 in main ()</pre>
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