This bug was fixed in the package debootstrap - 1.0.123ubuntu6.2
--------------- debootstrap (1.0.123ubuntu6.2) hirsute; urgency=medium
[ YunQiang Su ] * stage1: re-mkdir /proc instead of umount if it is a symlink (LP: #1948713)
-- Brian Murray <email address hidden> Fri, 19 Nov 2021 10:54:07 -0800
This bug was fixed in the package debootstrap - 1.0.123ubuntu6.2
---------------
debootstrap (1.0.123ubuntu6.2) hirsute; urgency=medium
[ YunQiang Su ]
* stage1: re-mkdir /proc instead of umount if it is a symlink (LP: #1948713)
-- Brian Murray <email address hidden> Fri, 19 Nov 2021 10:54:07 -0800