these 3 derivations will be built:
  /nix/store/5vhj17zi0s8j6yn5z55bcznb84dr670w-treefmt.toml.drv
  /nix/store/fpavznvx0z8i373793gvl0k5hcx8f954-treefmt.drv
  /nix/store/1dy1zs5vvdi3rzalsqvddrlccm9dwk2r-treefmt-check.drv
error: build of '/nix/store/1dy1zs5vvdi3rzalsqvddrlccm9dwk2r-treefmt-check.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=22&system=aarch64-darwin' failed: Cannot build '/nix/store/1dy1zs5vvdi3rzalsqvddrlccm9dwk2r-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ljpvzhbbgj4v6x35q3qlgpl3zhlnls4l-treefmt-check
       Last 25 log lines:
       >
       > CPY001 Missing copyright notice at top of file
       > --> packages/harvest-invoicer/src/harvest_invoicer/db.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> packages/harvest-invoicer/src/harvest_invoicer/fetch.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> packages/harvest-invoicer/src/harvest_invoicer/i18n.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> packages/harvest-invoicer/src/harvest_invoicer/mail.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> packages/harvest-invoicer/src/harvest_invoicer/model.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> packages/harvest-invoicer/src/harvest_invoicer/render.py:1:1
       >
       > Found 16 errors (1 fixed, 15 remaining).
       >
       > traversed 200 files
       > emitted 115 files for processing
       > formatted 18 files (1 changed) in 5.096s
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/1dy1zs5vvdi3rzalsqvddrlccm9dwk2r-treefmt-check.drv
error: Cannot build '/nix/store/1dy1zs5vvdi3rzalsqvddrlccm9dwk2r-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ljpvzhbbgj4v6x35q3qlgpl3zhlnls4l-treefmt-check