these 2 derivations will be built:
  /nix/store/33k49ja7943cxiwqgaq4p6j6ckgalb72-nixbot-docs.drv
  /nix/store/cy7zqgi6ja30c16nfqah964w94ka5png-inputDerivation-gh-pages.drv
building '/nix/store/33k49ja7943cxiwqgaq4p6j6ckgalb72-nixbot-docs.drv'...
building '/nix/store/cy7zqgi6ja30c16nfqah964w94ka5png-inputDerivation-gh-pages.drv'...