Think about using mingw-w64 with dwarf exception support for rustc cross-compilation for 32bit Windows
Our workaround we currently use to cope with issues cross-compiling rustc for 32bit Windows is not upstreamable (see: https://github.com/rust-lang/rust/pull/55444 for the arguments). We could think about compiling with a mingw-w64 using dwarf exception support instead, see: (https://github.com/rust-embedded/cross/blob/master/docker/mingw.sh).
However, we should take into account that we want to switch to a mingw-w64/clang-based toolchain soon and should start looking into this ticket not before the other (#28238 (moved)) is done.
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