these 2 derivations will be built:
  /nix/store/0xlqr8kzb4rr5cgd4bgh8hv3qi04sq77-freebuff-0.2.26.drv
  /nix/store/qfmd3gkg2caaxnjgwaa1zval2zknqhbi-check-freebuff.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy