this derivation will be built:
  /nix/store/974wz6n9h71k4bl65whl9fizsdy4l91h-flake-fmt-rustfmt.drv
error: Cannot build '/nix/store/974wz6n9h71k4bl65whl9fizsdy4l91h-flake-fmt-rustfmt.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/my7kj8hm1wzaf2g2lgxc09cljfn9w693-flake-fmt-rustfmt
       Last 2 log lines:
       > tribuchet: building on jamie
       > tribuchet worker error: connecting to the build agent at /run/tribuchet/agents/39.sock: Connection refused (os error 111)
       For full logs, run:
         nix log /nix/store/974wz6n9h71k4bl65whl9fizsdy4l91h-flake-fmt-rustfmt.drv