these 2 derivations will be built:
  /nix/store/kqkyv6v66xxmbnpy81skdh2943vbfg2j-eca-0.165.0.drv
  /nix/store/rfiimrs1fg25m1pnvls0kzr1wi12c5p3-check-eca.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy