these 4 derivations will be built:
  /nix/store/55waw2yx3kh33x3c50yqpb9jlzihlaby-buildbot-4.3.0.drv
  /nix/store/fvknhjyzl5karfvfgpjdbkmiml64ignj-treefmt.toml.drv
  /nix/store/v8vp94j1xy2l1kgxih0fsp42hd0djmb4-treefmt.drv
  /nix/store/fd6sf9x97y75dx4rilpz92spq04ggvzd-treefmt-check.drv
these 5 paths will be fetched (223.3 KiB download, 1.0 MiB unpacked):
  /nix/store/8chpph34w36cq1gv8bxrxdiylyny5p2m-python3.14-buildbot_worker-4.3.0
  /nix/store/g1w42pp8cfc5dffkzh6pfqg2hiks2p82-python3.14-setuptools-trial-0.6.0
  /nix/store/75w19q83yrnca4sbpr8gy42jsdr8p28f-python3.14-txrequests-0.9.6
  /nix/store/d5wsnw0p41bhsssp189vmxwi67v71wlx-python3.14-types-requests-2.32.4.20260107
  /nix/store/yiyfiisd34w9lb865yx1m0267lwsggg6-python3.14-types-urllib3-1.26.25.14
error: Cannot build '/nix/store/fd6sf9x97y75dx4rilpz92spq04ggvzd-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/53w8mysgbswnjf7nqbv4lx7p8sg2wa4w-treefmt-check
       Last 25 log lines:
       > CPY001 Missing copyright notice at top of file
       > --> buildbot_nix/buildbot_nix/scheduled.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> buildbot_nix/buildbot_nix/tests/__init__.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> buildbot_nix/buildbot_nix/tests/test_nix_eval_job.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> buildbot_nix/buildbot_nix/tests/test_pydantic_models.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> buildbot_nix/buildbot_nix/util.py:1:1
       >
       > CPY001 Missing copyright notice at top of file
       > --> buildbot_nix/buildbot_nix/worker.py:1:1
       >
       > Found 60 errors (10 fixed, 50 remaining).
       > No fixes available (1 hidden fix can be enabled with the `--unsafe-fixes` option).
       >
       > traversed 98 files
       > emitted 90 files for processing
       > formatted 42 files (6 changed) in 10.947s
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/fd6sf9x97y75dx4rilpz92spq04ggvzd-treefmt-check.drv