Openssl builds show "Unknown configuration key ..."
See https://github.com/rockdaboot/wget2/issues/232
$ wget2 -O /dev/null https://cygwin.com/cygwin-pkg-maint
Unknown configuration key 22 (maybe this config value should be of another type?)
Unknown configuration key 21 (maybe this config value should be of another type?)
[0] Downloading 'https://cygwin.com/cygwin-pkg-maint' ...
HTTP response 200 OK [https://cygwin.com/cygwin-pkg-maint]