these 2 derivations will be built:
  /nix/store/3shw0s4x7lbsrlv5bwzqc1sv32nl15mh-iets-0.1.0.drv
  /nix/store/157w8m3mhn7a2amr1v7mc0cr5yc3vacd-iets-diff-e2e.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy