lftp 4.9.0-1 segmentation fault (core dumped)

[thierry blind]

Hi,
I updated lftp 4.8.4-1 to lftp 4.9.0-1 but now calling following command will always core dump (I anonymized some confidential data):

lftp sftp://myuser@1.2.3.4:2222 -u myuser,mypasswd -e "set xfer:timeout 30; set net:timeout 30; set net:reconnect-interval-base 5; set net:max-retries 5; mirror --Remove-source-files --verbose . /path/to/local/dir; bye"

 337501 [main] lftp 16519 cygwin_exception::open_stackdumpfile: Dumping stack trace to lftp.exe.stackdump

Downgrading to lftp 4.8.4-1 solved the problem.
Note that my cygwin installation is up-to-date (as of 8 january 2020).

Thank you in advance for your help,
Greetings,
Thierry Blind.
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