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.