these 3 derivations will be built:
  /nix/store/1niabsfr6lrc5z10ij4p1qlc6r38bz2i-treefmt.toml.drv
  /nix/store/40q2ya9v76fclafh11d81c9nyrfm4zx3-treefmt.drv
  /nix/store/6rjclaarqgwkv8ynkv09vgz7q5pbrq5z-treefmt-check.drv
this path will be fetched (1.1 MiB download, 2.7 MiB unpacked):
  /nix/store/s3ldqwlvcvhz5cs21xch3ihj9h663b3c-nixfmt-rs-0.4.1
building '/nix/store/1niabsfr6lrc5z10ij4p1qlc6r38bz2i-treefmt.toml.drv'
treefmt.toml> tribuchet: building on jamie
treefmt.toml> structuredAttrs is enabled
building '/nix/store/40q2ya9v76fclafh11d81c9nyrfm4zx3-treefmt.drv'
treefmt> tribuchet: building on jamie
building '/nix/store/6rjclaarqgwkv8ynkv09vgz7q5pbrq5z-treefmt-check.drv'
treefmt-check> tribuchet: building on jamie
treefmt-check> treefmt v2.5.0traversed 55 files
treefmt-check> emitted 32 files for processing
treefmt-check> formatted 32 files (0 changed) in 106ms

post-build step Upload coverage to codecov: ok
Skipping codecov: project=Mic92/fast-nix-gc attr=x86_64-linux.treefmt