these 3 derivations will be built:
  /nix/store/rxbpxh2bwjp0z932vf8y3m92mvh73d30-rendered.drv
  /nix/store/xa38hzzj7grb35pcw0xl4grc5aszhpk5-generated-docs.drv
  /nix/store/v1ci6lympld0p57lkfgxlw7bsb8jq2fl-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy