these 3 derivations will be built:
  /nix/store/fpcvdgzp51nz6y45ix91rf8839j1di0b-treefmt.toml.drv
  /nix/store/sqw2s9rdh7r1kp1syr79xs3fky7ad3d7-treefmt.drv
  /nix/store/rvx6ijqr8nzf5x3fagh02918dw75ic2q-treefmt-check.drv
this path will be fetched (990.8 KiB download, 2.3 MiB unpacked):
  /nix/store/87vbg7006711a9sxwjppjr1i6h6qly5n-nixfmt-rs-0.4.1
building '/nix/store/fpcvdgzp51nz6y45ix91rf8839j1di0b-treefmt.toml.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/fpcvdgzp51nz6y45ix91rf8839j1di0b-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/sqw2s9rdh7r1kp1syr79xs3fky7ad3d7-treefmt.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/sqw2s9rdh7r1kp1syr79xs3fky7ad3d7-treefmt.drv'
building '/nix/store/rvx6ijqr8nzf5x3fagh02918dw75ic2q-treefmt-check.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/rvx6ijqr8nzf5x3fagh02918dw75ic2q-treefmt-check.drv'
treefmt-check> treefmt v2.5.0traversed 55 files
treefmt-check> emitted 32 files for processing
treefmt-check> formatted 32 files (0 changed) in 254ms

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