these 2 derivations will be built:
  /nix/store/szad12xmz1x61m4qah5h51ki1w0xfqxd-iets-0.1.0.drv
  /nix/store/mpiwlsfxn0icpml870wfzmld66a0bldz-iets-diff-e2e.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy