StacktraceTop: __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7fd933106860 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:199 malloc_printerr (ptr=0x7fd9000065e0, str=0x7fd933106990 "double free or corruption (out)", action=3) at malloc.c:4902 _int_free (av=<optimized out>, p=0x7fd9000065d0, have_lock=0) at malloc.c:3758 initialize_backend (cbdav=cbdav@entry=0x7fd91800d690, perror=perror@entry=0x7fd91d8fcd18) at e-cal-backend-caldav.c:2685 caldav_do_open (backend=0x7fd91800d690, cal=<optimized out>, cancellable=0x2617040, only_if_exists=<optimized out>, perror=0x7fd91d8fcd18) at e-cal-backend-caldav.c:2787
StacktraceTop: do_abort@ entry=2, fmt=fmt@ entry=0x7fd9331 06860 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/ unix/sysv/ linux/libc_ fatal.c: 199 65e0, str=0x7fd933106990 "double free or corruption (out)", action=3) at malloc.c:4902 cbdav@entry= 0x7fd91800d690, perror= perror@ entry=0x7fd91d8 fcd18) at e-cal-backend- caldav. c:2685 0x7fd91800d690, cal=<optimized out>, cancellable= 0x2617040, only_if_ exists= <optimized out>, perror= 0x7fd91d8fcd18) at e-cal-backend- caldav. c:2787
__libc_message (do_abort=
malloc_printerr (ptr=0x7fd90000
_int_free (av=<optimized out>, p=0x7fd9000065d0, have_lock=0) at malloc.c:3758
initialize_backend (cbdav=
caldav_do_open (backend=