Bug#1019749: linux autopkg tests fail with stderr output, blocking gcc-11

[Matthias Klose <doko@debian.org>]

Package: src:linux
Version: 5.19.6-1
Severity: serious
Tags: sid bookworm

linux autopkg tests fail with stderr output, blocking gcc-11

[...]
E: Unexpected warning/error messages
autopkgtest [14:13:45]: @@@@@@@@@@@@@@@@@@@@ summary
selftests            SKIP Test restriction "isolation-machine" requires testbed 
capability "isolation-machine"
selftests            SKIP Test restriction "isolation-machine" requires testbed 
capability "isolation-machine"
python               PASS (superficial)
kbuild               FAIL stderr: E: Unexpected warning/error messages