bug#55848: [cuirass] workers stalled

[Tom Fitzhenry]

On Mon, 20 Jun 2022, at 12:39 PM, Maxim Cournoyer wrote:
> That's a known issue with mrustc; it only succeeds with x86_64; the
> other architectures have problems.  That's a bug the mrustc author would
> like to fix, so perhaps in time in will improve (especially if
> interested parties can lend a hand).

mrustc was fixed on aarch64 in https://issues.guix.gnu.org/54580 on staging, 
which was recently merged to master.

I had tested mrustc and rust-1.39 to compile on aarch64 on staging, but now I 
observe rust-1.39 failing.

I'll take a closer look, maybe I'm missing something.