May 17 07:52:14 clone systemd[1]: Starting Dovecot IMAP/POP3 email server...
May 17 07:52:14 clone systemd[1]: Started Dovecot IMAP/POP3 email server.
May 17 07:52:14 clone dovecot[338030]: May 17 07:52:14 master: Info: Dovecot v2.3.20 (80a5ac675d) starting up for imap, pop3, lmtp (core dumps disabled)
May 17 07:52:15 clone dovecot[338034]: May 17 07:52:15 doveadm(info.nl)<338040><tBH8NI5rZGR4KAUAKQCViw>: Panic: file fd-util.c: line 102 (fd_set_nonblock): assertion failed: (fd > -1)
May 17 07:52:15 clone dovecot[338034]: May 17 07:52:15 doveadm(info.nl)<338040><tBH8NI5rZGR4KAUAKQCViw>: Error: Raw backtrace: /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(+0x13cd2f) [0x7f2828b6fd2f] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(backtrace_append+0x18) [0x7f2828b6feb1] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(backtrace_get+0x26) [0x7f2828b6fed9] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(+0x151521) [0x7f2828b84521] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(default_fatal_handler+0) [0x7f2828b845e6] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(+0x152871) [0x7f2828b85871] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f2828b848ba] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(fd_set_nonblock+0x48) [0x7f2828b8608e] -> dovecot/doveadm-server(+0x30e21) [0x556cce7f5e21] -> dovecot/doveadm-server(+0x31662) [0x556cce7f6662] -> dovecot/doveadm-server(+0x350bb) [0x556cce7fa0bb] -> dovecot/doveadm-server(doveadm_mail_single_user+0x11b) [0x556cce7fa2b9] -> dovecot/doveadm-server(+0x35974) [0x556cce7fa974] -> dovecot/doveadm-server(doveadm_cmd_ver2_to_mail_cmd_wrapper+0x6ee) [0x556cce7fb5bc] -> dovecot/doveadm-server(doveadm_cmd_run_ver2+0x1c9) [0x556cce812108] -> dovecot/doveadm-server(+0x5382c) [0x556cce81882c] -> dovecot/doveadm-server(+0x53920) [0x556cce818920] -> dovecot/doveadm-server(+0x53bdf) [0x556cce818bdf] -> dovecot/doveadm-server(+0x542ee) [0x556cce8192ee] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(io_loop_call_io+0xe5) [0x7f2828babe4f] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x243) [0x7f2828baf470] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x85) [0x7f2828bac0d6] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(io_loop_run+0xbb) [0x7f2828babfb1] -> /usr/local/stow/dovecot/lib/dovecot/libdovecot.so.0(master_service_run+0x2e) [0x7f2828ac57dc] -> dovecot/doveadm-server(main+0xcb) [0x556cce81d6a1] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea) [0x7f282873ed0a] -> dovecot/doveadm-server(_start+0x2a) [0x556cce7e2d3a]
May 17 07:52:15 clone systemd[1]: Started Process Core Dump (PID 338041/UID 0).
May 17 07:52:15 clone dovecot[338034]: May 17 07:52:15 doveadm(info.nl)<338040><tBH8NI5rZGR4KAUAKQCViw>: Fatal: master: service(doveadm): child 338040 killed with signal 6 (core dumped)
May 17 07:52:15 clone systemd[1]: systemd-coredump@1151-338041-0.service: Succeeded.
May 17 07:52:21 clone systemd[1]: Stopping Dovecot IMAP/POP3 email server...
May 17 07:52:21 clone dovecot[338030]: May 17 07:52:21 master: Warning: Killed with signal 15 (by pid=338054 uid=0 code=kill)
May 17 07:52:22 clone systemd[1]: dovecot.service: Succeeded.
May 17 07:52:22 clone systemd[1]: Stopped Dovecot IMAP/POP3 email server.