I try to build Poky and the final rootfs image doesn't not mount with the following problem:

----------------------8<-------------------------8<------------------------------
BIFS: mounted UBI device 0, volume 0, name "polatisnic-rootfs"
UBIFS: mounted read-only
UBIFS: file system size:   10737408 bytes (10485 KiB, 10 MiB, 82 LEBs)
UBIFS: journal size:       1964160 bytes (1918 KiB, 1 MiB, 15 LEBs)
UBIFS: media format:       w4/r0 (latest is w4/r0)
UBIFS: default compressor: lzo
UBIFS: reserved for root:  0 bytes (0 KiB)
VFS: Mounted root (ubifs filesystem) readonly on device 0:14.
devtmpfs: mounted
Freeing init memory: 208K
INIT: version 2.88 booting
mount: permission denied (are you root?)
mount: permission denied (are you root?)
grep: /proc/filesystems: No such file or directory
mount: permission denied (are you root?)
grep: /proc/mounts: No such file or directory
grep: /proc/mounts: No such file or directory
Remounting root file system...
mount: can't read '/etc/mtab': No such file or directory
------------------------8<-----------------------------------8<------------------

After a bit of research, I have found out that the busybox was populated in the rootfs

under ownership of "andreas:andreas" instead of "root:root", and its symbolic links under "root:root"

I fixed manually the ownership and it booted  up.

Does anyone knows what might be going wrong in my build process?

Any guidance would be very helpful.