bug#57303: powerpc64le: rust build failure is bottleneck for many packages

[Marcel van der Boom]

[Marcel van der Boom]:
> [Efraim Flashner]:
> > About 2 months ago I spent some time and got the rust bootstrap 
> > working
> > for riscv64-linux. I would suggest looking at the staging 
> > branch since
> > there the rust bootstrap version is at 1.54.

> Ah, I didn't even think of that, thanks! Will try that.

Unfortunately, it fails with the exact same error