Arch error: PANIC: i/o error in arch_inventory_traversal/is_nested_tree

This may be caused by a directory being owned by root underneath the current directory. I.e. permissions issues. Terrible error message, though.

$ tla changes --diffs
* looking for jader-usb@bread.com--2004/openacs--usb--1.0--patch-1 to compare with
* comparing to jader-usb@bread.com--2004/openacs--usb--1.0--patch-1
PANIC: i/o error in arch_inventory_traversal/is_nested_tree

This is pretty frustrating. I thought I could fix it with my .arch_inventory file:

precious ^supervisor$

But it's still not working:

$ tla tree-lint
PANIC: i/o error in arch_inventory_traversal/is_nested_tree

I ended up changing the =tagging-method file. That worked. The .arch_inventory file works for files in the same directory only, I think.