.
Thread 1 (Thread 0xb72aba80 (LWP 1881)):
#0  0xb755e74d in g_logv (log_domain=0x0, log_level=<optimized out>, format=0x804d8ec "Can not create directory '%s': %s", args1=0xbf9d4b3c "@\346\177\b") at /build/buildd/glib2.0-2.31.22/./glib/gmessages.c:765
        domain = 0x0
        data = <optimized out>
        depth = <optimized out>
        log_func = <optimized out>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = <optimized out>
        test_level = <optimized out>
        was_fatal = 0
        was_recursion = 0
        i = <optimized out>
#1  0xb755e8d3 in g_return_if_fail_warning (log_domain=0x804d8ec "Can not create directory '%s': %s", pretty_function=0xbf9d4b3c "@\346\177\b", expression=0x87fe640 "/var/lib/lightdm/.config/dconf") at /build/buildd/glib2.0-2.31.22/./glib/gmessages.c:800
No locals.
#2  0x00000004 in ?? ()
No symbol table info available.
#3  0x0804d8ec in ?? ()
No symbol table info available.
#4  0xb736a4d3 in add_derivation (nsteps=Cannot access memory at address 0xffffffcc
) at gconv_db.c:155
        new_deriv = <optimized out>
        fromset_len = 3073030728
        toset_len = <optimized out>
#5  find_derivation (toset=Cannot access memory at address 0xffffffb4
) at gconv_db.c:674
        first = <error reading variable first (Cannot access memory at address 0xffffffb0)>
        current = <error reading variable current (Cannot access memory at address 0xffffffd0)>
        lastp = <error reading variable lastp (Cannot access memory at address 0xffffffa0)>
        solution = <error reading variable solution (Cannot access memory at address 0xffffffb8)>
        best_cost_hi = <error reading variable best_cost_hi (Cannot access memory at address 0xffffffc4)>
        best_cost_lo = <error reading variable best_cost_lo (Cannot access memory at address 0xffffffbc)>
        result = <optimized out>