I have a celery worker that has run and built fine for the last several months. After pushing a small change today, the build began to fail. I am 100% sure that the code pushed didn't cause this, and I haven't changed anything regarding the build command or setup process. What could be causing this failure?

ERROR: failed to solve: process "/bin/bash -ol pipefail -c nix-env -if .nixpacks/nixpkgs-bf446f08bff6814b569265bef8374cfdd3d8f0e0.nix && nix-collect-garbage -d" did not complete successfully: exit code: 1