The remote FreeBSD host is missing a security-related update.
Simon Josefsson reports : libidn: Fix out-of-bounds stack read in idna_to_ascii_4i. idn: Solve out-of-bounds-read when reading one zero byte as input. Also replaced fgets with getline. libidn: stringprep_utf8_nfkc_normalize reject invalid UTF-8. It was always documented to only accept UTF-8 data, but now it doesn't crash when presented with such data.