$ winrm-cli cmd --computer localhost --username vagrant --password vagrant dir
WARNING: Could not load IOV methods. Check your GSSAPI C library for an update
WARNING: Could not load AEAD methods. Check your GSSAPI C library for an update
$ winrm-cli script --computer localhost --username vagrant --password vagrant ls
WARNING: Could not load IOV methods. Check your GSSAPI C library for an update
WARNING: Could not load AEAD methods. Check your GSSAPI C library for an update
error: undefined method `chars' for nil:NilClass. Use --trace to view backtrace