Keeping everything else the same, and only reverting to kernel 5.9.16-200.fc33.x86_64, this kernel message >overlayfs: upper fs does not support xattr, falling back to index=off and metacopy=off no longer appears when I 'podman system reset' or when 'podman build' bolt, using the overlay driver. However, I do still get Bail out! ERROR:../tests/test-common.c:1413:test_io_dir_is_empty: 'empty' should be FALSE -- Chris Murphy