these 2 derivations will be built:
  /nix/store/wgbm4g9i1d68d3wr65zrdxcq47n73f02-closure-info.drv
  /nix/store/1w0aql0fxkm9xhnwp14v1pihssgblp2s-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy