[Dovecot] doveadm migration: Warning: I/O leak

[Gedalya]

This seems to be happening only when using the pop3c plugin. Any advice?

root at imap01:/etc/dovecot# doveadm -D -o imapc_user=chat_logs at xxxxxx.com 
-o 'imapc_password=*******' -o pop3c_user=chat_logs at xxxxxx.com -o 
'pop3c_password=*****' backup -u chat_logs at xxxxxx.com -R imapc:
doveadm(root): Debug: Loading modules from directory: 
/usr/lib/dovecot/modules
doveadm(root): Debug: Module loaded: 
/usr/lib/dovecot/modules/lib10_quota_plugin.so
doveadm(root): Debug: Module loaded: 
/usr/lib/dovecot/modules/lib20_expire_plugin.so
doveadm(root): Debug: Module loaded: 
/usr/lib/dovecot/modules/lib20_listescape_plugin.so
doveadm(root): Debug: Loading modules from directory: 
/usr/lib/dovecot/modules/doveadm
doveadm(root): Debug: Skipping module doveadm_acl_plugin, because 
dlopen() failed: 
/usr/lib/dovecot/modules/doveadm/lib10_doveadm_acl_plugin.so: undefined 
symbol: acl_user_module (this is usually intentional, so just ignore 
this message)
doveadm(root): Debug: Module loaded: 
/usr/lib/dovecot/modules/doveadm/lib10_doveadm_expire_plugin.so
doveadm(root): Debug: Module loaded: 
/usr/lib/dovecot/modules/doveadm/lib10_doveadm_quota_plugin.so
doveadm(root): Debug: Skipping module doveadm_zlib_plugin, because 
dlopen() failed: 
/usr/lib/dovecot/modules/doveadm/lib10_doveadm_zlib_plugin.so: undefined 
symbol: i_stream_create_deflate (this is usually intentional, so just 
ignore this message)
doveadm(root): Debug: Skipping module doveadm_fts_plugin, because 
dlopen() failed: 
/usr/lib/dovecot/modules/doveadm/lib20_doveadm_fts_plugin.so: undefined 
symbol: fts_list_backend (this is usually intentional, so just ignore 
this message)
doveadm(chat_logs at xxxxxx.com): Debug: Added userdb setting: 
mail=maildir:/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir
doveadm(chat_logs at xxxxxx.com): Debug: Added userdb setting: 
plugin/quota_rule=*:storage=5120M
doveadm(chat_logs at xxxxxx.com): Debug: Effective uid=1001, gid=1001, 
home=/stor/real/domains/xxxxxx.com/ch/chat_logs
doveadm(chat_logs at xxxxxx.com): Debug: Home dir not found: 
/stor/real/domains/xxxxxx.com/ch/chat_logs
doveadm(chat_logs at xxxxxx.com): Debug: Namespace : type=private, 
prefix=POP3-MIGRATION-NS/, sep=, inbox=no, hidden=yes, list=no, 
subscriptions=yes location=pop3c:
doveadm(chat_logs at xxxxxx.com): Debug: fs: root=, index=, control=, 
inbox=, alt=
doveadm(chat_logs at xxxxxx.com): Debug: Namespace inbox: type=private, 
prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes 
location=maildir:/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir
doveadm(chat_logs at xxxxxx.com): Debug: maildir++: 
root=/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir, index=, 
control=, inbox=/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir, alt=
doveadm(chat_logs at xxxxxx.com): Debug: Namespace : 
/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir doesn't exist yet, 
using default permissions
doveadm(chat_logs at xxxxxx.com): Debug: Namespace : Using permissions from 
/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir: mode=0700 gid=-1
dsync(chat_logs at xxxxxx.com): Debug: Effective uid=1001, gid=1001, 
home=/stor/real/domains/xxxxxx.com/ch/chat_logs
dsync(chat_logs at xxxxxx.com): Debug: Namespace : type=private, 
prefix=POP3-MIGRATION-NS/, sep=, inbox=no, hidden=yes, list=no, 
subscriptions=yes location=pop3c:
dsync(chat_logs at xxxxxx.com): Debug: fs: root=, index=, control=, inbox=, 
alt=
dsync(chat_logs at xxxxxx.com): Debug: Namespace inbox: type=private, 
prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes 
location=imapc:
dsync(chat_logs at xxxxxx.com): Debug: imapc: root=, index=, control=, 
inbox=, alt=
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Looking up IP address
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Connecting to 111.111.111.111:143
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): Server 
capabilities: IMAP4rev1 NAMESPACE LITERAL+ UIDPLUS IDLE COMPARATOR 
AUTH=LOGIN AUTH=NTLM AUTH=SCRAM-MD5 AUTH=CRAM-MD5
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Authenticating as chat_logs at xxxxxx.com
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Authenticated successfully
dsync(chat_logs at xxxxxx.com): Debug: Namespace : 
/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir/.Sent Items doesn't 
exist yet, using default permissions
dsync(chat_logs at xxxxxx.com): Debug: Namespace : Using permissions from 
/stor/real/domains/xxxxxx.com/ch/chat_logs/Maildir: mode=0700 gid=-1
dsync(chat_logs at xxxxxx.com): Info: Sent Items: only in source 
(guid=34b8141947b9372e94589bd35a54dac5)
dsync(chat_logs at xxxxxx.com): Info: INBOX: only in source 
(guid=c92f64f79f0d1ed01e6d5b314f04886c)
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Looking up IP address
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Connecting to 111.111.111.111:143
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): Server 
capabilities: IMAP4rev1 NAMESPACE LITERAL+ UIDPLUS IDLE COMPARATOR 
AUTH=LOGIN AUTH=NTLM AUTH=SCRAM-MD5 AUTH=CRAM-MD5
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Authenticating as chat_logs at xxxxxx.com
dsync(chat_logs at xxxxxx.com): Debug: imapc(mail01.xxxxxx.com:143): 
Authenticated successfully
dsync(chat_logs at xxxxxx.com): Debug: pop3c(111.111.111.111): Looking up 
IP address
dsync(chat_logs at xxxxxx.com): Debug: pop3c(111.111.111.111): Connecting 
to 111.111.111.111:110
dsync(chat_logs at xxxxxx.com): Debug: pop3c(111.111.111.111): 
Authenticating as chat_logs at xxxxxx.com
dsync(chat_logs at xxxxxx.com): Warning: I/O leak: 0xb769a340 (line 1229, 
fd 14)
dsync(chat_logs at xxxxxx.com): Warning: I/O leak: 0xb769a340 (line 1229, 
fd 10)
dsync(chat_logs at xxxxxx.com): Warning: Timeout leak: 0xb769a5a0 (line 1316)
dsync(chat_logs at xxxxxx.com): Warning: Timeout leak: 0xb769a5a0 (line 1316)