these 3 derivations will be built:
  /nix/store/llb60rzczvq186k2h1jma3whh5bwf11m-treefmt.toml.drv
  /nix/store/62y6kw2za7pfnpbbw2jmkzg03cy1xxjg-treefmt.drv
  /nix/store/gyd3vxkhxaz2byi5xij9qbs795xj0933-inputDerivation-treefmt-check.drv
this path will be fetched (1.1 MiB download, 2.8 MiB unpacked):
  /nix/store/bsizww0lsgh4wafbr2xvkzkfx8zsiw54-nixfmt-rs-0.5.3
building '/nix/store/llb60rzczvq186k2h1jma3whh5bwf11m-treefmt.toml.drv'
treefmt.toml> tribuchet: building on jamie
treefmt.toml> structuredAttrs is enabled
building '/nix/store/62y6kw2za7pfnpbbw2jmkzg03cy1xxjg-treefmt.drv'
treefmt> tribuchet: building on jamie
treefmt> structuredAttrs is enabled
building '/nix/store/gyd3vxkhxaz2byi5xij9qbs795xj0933-inputDerivation-treefmt-check.drv'
inputDerivation-treefmt-check> tribuchet: building on jamie

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