this derivation will be built:
  /nix/store/h80vqysbw417lbxbcfwzm3n38xrhcn8q-nixos-anywhere-docs.drv
this path will be fetched (4.8 MiB download, 14.6 MiB unpacked):
  /nix/store/135cxs48ypi0sl9wfzjwcp136p2is4q3-mdbook-0.5.4
error: Cannot build '/nix/store/h80vqysbw417lbxbcfwzm3n38xrhcn8q-nixos-anywhere-docs.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/4zdmsjp3ir6431hr5kbhg4mpyrc9q6w0-nixos-anywhere-docs
       Last 7 log lines:
       > tribuchet: building on jamie
       >  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/4zdmsjp3ir6431hr5kbhg4mpyrc9q6w0-nixos-anywhere-docs`
       > tribuchet worker error: packing output /nix/store/4zdmsjp3ir6431hr5kbhg4mpyrc9q6w0-nixos-anywhere-docs: packing /var/lib/tribuchet/builds/d15b34a741848c516a1c89075e6ea2ca/root/nix/store/4zdmsjp3ir6431hr5kbhg4mpyrc9q6w0-nixos-anywhere-docs: Permission denied (os error 13)
       For full logs, run:
         nix log /nix/store/h80vqysbw417lbxbcfwzm3n38xrhcn8q-nixos-anywhere-docs.drv