these 2 derivations will be built:
  /nix/store/180s89iqa5xsb4r588jzsmsynrpqi7vz-eca-0.163.0.drv
  /nix/store/1ff6sagmmkrn8ailyvzbwpw0mz525s68-check-eca.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy