[capitol_]

No, it's on stable rust, maybe you got confused by the bug report talking about the nixos-unstable channel, that has nothing to do with the rust nightly builds, it's the version of nixos that is currently under development.

You can reproduce this yourself with:

  git clone https://github.com/cortex/ripasso.git
  cd ripasso
  git checkout release-0.5.1
  cargo build --locked

On my arch system this fails to build with the same errors as the bug report i got, and my rustc version is:

  $ rustc --version --verbose
  rustc 1.57.0 (f1edd0429 2021-11-29)
  binary: rustc
  commit-hash: f1edd0429582dd29cccacaf50fd134b05593bd9c
  commit-date: 2021-11-29
  host: x86_64-unknown-linux-gnu
  release: 1.57.0
  LLVM version: 13.0.0