Comment 15 for bug 1729576

Still exists in 20.04 - no attempt has been to fix this
The issue is simply when /root/ is a soft link

Preparing to unpack .../chromium-browser_1%3a85.0.4183.83-0ubuntu0.20.04.2_amd64.deb ...
=> Installing the chromium snap
==> Checking connectivity with the snap store
==> Installing the chromium snap
error: cannot perform the following tasks:
- Run configure hook of "chromium" snap if present (run hook "configure": cannot perform operation: mount --rbind /root /tmp/snap.rootfs_mKHbYk//root: Permission d
enied)
dpkg: error processing archive /var/cache/apt/archives/chromium-browser_1%3a85.0.4183.83-0ubuntu0.20.04.2_amd64.deb (--unpack):
 new chromium-browser package pre-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/chromium-browser_1%3a85.0.4183.83-0ubuntu0.20.04.2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)