these 5 derivations will be built:
  /nix/store/lfwwq51l1bgk7b5kdp513nllsdjrc3bc-source.drv
  /nix/store/h8cpassh4ncvrg2dkn4z0qi12aqhahy9-ccusage-20.0.41-vendor-staging.drv
  /nix/store/c67c7pgafv3s2n73ghs3vb63a14p2qhr-ccusage-20.0.41-vendor.drv
  /nix/store/d0nz3pdd8v8g9vc3yhd6ywzd4iqal3rw-ccusage-20.0.41.drv
  /nix/store/1g8hyj05hph2r739n1kw9pajkzb6giw0-check-ccusage.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy