Hi,

the sogo package contains a patch that hard coded the number of failing
tests to two:

https://sources.debian.org/src/sogo/5.10.0-2/debian/patches/0006-Update-unit-test-expected-failures.patch/

This makes the package FTBFS when more tests succeeds, for example in a
local build or in sbuild with the unshare backend. Please drop this
patch and fix or disable the failing tests instead.

Cheers Jochen