Continuing rust issues

[John Klos <john%ziaspace.com@localhost>]

Hello,

I keep seeing rust issues which look like this:

cargo:warning=In file included from curl/lib/urldata.h:128,
cargo:warning=                 from curl/lib/base64.c:31:
cargo:warning=curl/lib/http.h:140:17: error: field 'form' has incomplete 
type
cargo:warning=   curl_mimepart form;
cargo:warning=                 ^~~~
cargo:warning=In file included from curl/lib/base64.c:31:
cargo:warning=curl/lib/urldata.h:1632:17: error: field 'mimepost' has 
incomplete type
cargo:warning=   curl_mimepart mimepost;  /* MIME/POST data. */
cargo:warning=                 ^~~~~~~~
exit code: 1

--- stderr

This is, rignt now, on aarch64 and i386. sparc64 and amd64 don't fail.

This issue looks familiar, but I can't remember when & where I've seen it 
before, nor what to do about it. Hints, anyone?

John