these 2 derivations will be built:
  /nix/store/wfcvavv9ryymb4la5mywahc9canvcnvz-treefmt.drv
  /nix/store/zjw0m03dpsn9vniiwrrs77dikjz4hha1-treefmt-check.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy