these 3 derivations will be built:
  /nix/store/2xh2a8yg8w9vf3w453rk8kzi515w5lkx-treefmt.toml.drv
  /nix/store/fdg7ps0br4dyvc4vx3jm9r2gn6hlxh2s-treefmt.drv
  /nix/store/wpkgn6d7v774q2f1my7y0khsssc3cl64-inputDerivation-treefmt-check.drv
building '/nix/store/2xh2a8yg8w9vf3w453rk8kzi515w5lkx-treefmt.toml.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/2xh2a8yg8w9vf3w453rk8kzi515w5lkx-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/fdg7ps0br4dyvc4vx3jm9r2gn6hlxh2s-treefmt.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/fdg7ps0br4dyvc4vx3jm9r2gn6hlxh2s-treefmt.drv'
treefmt> structuredAttrs is enabled
building '/nix/store/wpkgn6d7v774q2f1my7y0khsssc3cl64-inputDerivation-treefmt-check.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/wpkgn6d7v774q2f1my7y0khsssc3cl64-inputDerivation-treefmt-check.drv'

post-build step Upload coverage to codecov: ok
Skipping codecov: project=Mic92/nix-fast-build attr=checks.aarch64-darwin.closure-treefmt