It's a hard dependency of recent python3-sphinx-rtd-theme
versions:
4d6de11137
The issue is exposed by latest btrfs-tools update.
(From OE-Core rev: 7a3d074f2d1679b4d4e52c4a023edb46224ca0be)
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>