this derivation will be built:
  /nix/store/x1abw5mcfai9mqn7mm2fk7gqk9byryza-nixos-anywhere-docs.drv
this path will be fetched (4.8 MiB download, 15.2 MiB unpacked):
  /nix/store/ci6n8i4ihvmmx6zx6hgpm42095dcwknn-mdbook-0.5.4
Failed to find a machine for remote build!
derivation: x1abw5mcfai9mqn7mm2fk7gqk9byryza-nixos-anywhere-docs.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])