this derivation will be built:
  /nix/store/7v09mf5j6rsm16qp56gpbxcpgk1iz6sh-nixos-anywhere-docs.drv
this path will be fetched (4.8 MiB download, 15.2 MiB unpacked):
  /nix/store/rziafmya77yi0cm21bsx54sfwwfz3d6k-mdbook-0.5.4
Failed to find a machine for remote build!
derivation: 7v09mf5j6rsm16qp56gpbxcpgk1iz6sh-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], [])
error: Cannot build '/nix/store/7v09mf5j6rsm16qp56gpbxcpgk1iz6sh-nixos-anywhere-docs.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/740633pf53bkvaz8zl4sfpq62zh40mis-nixos-anywhere-docs
       Last 7 log lines:
       > tribuchet: building on eliza
       >  INFO Book building has started
       >  INFO Running the html backend
       >  WARN unclosed HTML tag `<operating>` found in `reference.md` while exiting TableCell
       > HTML tags must be closed before exiting a markdown element.
       >  INFO HTML book written to `/nix/store/740633pf53bkvaz8zl4sfpq62zh40mis-nixos-anywhere-docs`
       > tribuchet worker error: packing output /nix/store/740633pf53bkvaz8zl4sfpq62zh40mis-nixos-anywhere-docs: packing /var/lib/tribuchet/builds/faff1b9c7bbdd9f25fb6cd2b0eb7d7b5/root/nix/store/740633pf53bkvaz8zl4sfpq62zh40mis-nixos-anywhere-docs: Permission denied (os error 13)
       For full logs, run:
         nix log /nix/store/7v09mf5j6rsm16qp56gpbxcpgk1iz6sh-nixos-anywhere-docs.drv