last few lines of doveadm backup output

doveadm-backup.txt

dsync(evan@eklitzke.org): Debug: brain M: Import INBOX: Import mail body for GUID=1470663429196061697 UID=0
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31146 because: copying
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31156 because: access
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31156 because: mail stream
dsync(evan@eklitzke.org): Debug: brain M: import mail uid 0 guid 1470692907208877031
dsync(evan@eklitzke.org): Debug: brain M: Import INBOX: Import mail body for GUID=1470692907208877031 UID=0
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31156 because: copying
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31180 because: access
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31180 because: mail stream
dsync(evan@eklitzke.org): Debug: brain M: import mail uid 0 guid 1470753800412651935
dsync(evan@eklitzke.org): Debug: brain M: Import INBOX: Import mail body for GUID=1470753800412651935 UID=0
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31180 because: copying
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31181 because: access
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31181 because: mail stream
dsync(evan@eklitzke.org): Debug: brain M: import mail uid 0 guid 1470753948071579398
dsync(evan@eklitzke.org): Debug: brain M: Import INBOX: Import mail body for GUID=1470753948071579398 UID=0
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31181 because: copying
dsync(evan@eklitzke.org): Debug: Mailbox INBOX: Opened mail UID=31204 because: access
dsync(evan@eklitzke.org): Panic: file imapc-client.c: line 179 (imapc_client_run_pre): assertion failed: (client->ioloop == NULL)
dsync(evan@eklitzke.org): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0xa8416) [0x7f3855380416] -> /usr/lib64/dovecot/libdovecot.so.0(+0xa849a) [0x7f385538049a] -> /usr/lib64/dovecot/libdovecot.so.0(+0x3a41a) [0x7f385531241a] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x42ce6) [0x7f3855659ce6] -> /usr/lib64/dovecot/libdovecot-storage.so.0(imapc_simple_run+0x2c) [0x7f38556b709c] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x9897a) [0x7f38556af97a] -> /usr/lib64/dovecot/libdovecot-storage.so.0(imapc_list_get_mailbox_flags+0x50) [0x7f38556b0110] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x9c9c9) [0x7f38556b39c9] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x9cac6) [0x7f38556b3ac6] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x9f511) [0x7f38556b6511] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xa59bb) [0x7f38556bc9bb] -> /usr/lib64/dovecot/libdovecot-storage.so.0(imapc_connection_input_pending+0x1f9) [0x7f38556bec99] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xa7cea) [0x7f38556becea] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x5a) [0x7f385539479a] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x136) [0x7f3855395c06] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x3a) [0x7f385539480a] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x48) [0x7f3855394968] -> /usr/lib64/dovecot/libdovecot-storage.so.0(imapc_client_run+0x13c) [0x7f38556b9e4c] -> /usr/lib64/dovecot/libdovecot-storage.so.0(imapc_mailbox_run_nofetch+0x20) [0x7f38556b6fa0] -> /usr/lib64/dovecot/libdovecot-storage.so.0(imapc_mail_fetch+0x195) [0x7f38556b1195] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x9b8c5) [0x7f38556b28c5] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mail_get_stream_because+0x5f) [0x7f385566247f] -> /usr/lib64/dovecot/libdovecot-storage.so.0(index_mail_update_access_parts_post+0x82) [0x7f38556daf32] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xcaaf0) [0x7f38556e1af0] -> /usr/lib64/dovecot/libdovecot-storage.so.0(index_storage_search_next_nonblock+0x115) [0x7f38556e1d25] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_search_next_nonblock+0x26) [0x7f385566eb06] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_search_next+0x45) [0x7f385566eb85] -> /bin/doveadm [evan@eklitzke.org INBOX import:6097/35344](dsync_mailbox_export_next_mail+0x5b) [0x5580d499a23b]