these 3 derivations will be built:
  /nix/store/69xqbfparvjrn32x352rdfli12aqyb7m-workmux-0.1.271-vendor.drv
  /nix/store/b0ligf33ls0ln0zx1ibg7bggxz4v8q0z-workmux-0.1.271.drv
  /nix/store/x47m7a8bsdlpky6v32j7zq6myga0l63x-check-workmux.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy