Rust 1.60 not working to build 102 on Debian Jessie

Mozilla uses Rust 1.60 to build Firefox 102.

For some reason our binaries cannot complete a build, but official binaries can.

It seems like we hit a deadlock in the phase

Compiling gkrust-shared v0.1.0 (/home/rbm/tor-browser/toolkit/library/rust/shared)

Only one rustc process remains alive, but it uses only 40-50MB of memory, and 0% of CPU, and it never ends.

I have also tried to add a RUSTC_LOGS="info"/RUSTC_LOGS="debug", but I don't get any output.

Our binaries seem to work on the current stable of Debian (I have tried to set bullseye as a container in projects/firefox/config).

As a workaround we can run ./install.sh --prefix=$distdir on the downloaded 1.60, to convert the downloaded archive (which is organized by project) to a more standard directory structure (the usual bin/, lib/, etc...).

Also, I have opened a thread on Rust's forum: https://users.rust-lang.org/t/how-to-reproduce-official-rustc-builds-for-linux/79569. My idea is that we could start by building a rustc in the same environment and with the same configuration as the official binaries, and then make it more and more similar to our builds, to see when it breaks.