these 2 derivations will be built:
  /nix/store/9c6sx40kb6x2d41ld0jdirf7hy0w26j9-test-stack-land.drv
  /nix/store/lcbygkn2g3z2pcywzb82cd412as8spyd-stack-land-integration.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy