Comment 3 for bug 2003892

There's now an additional failure on armhf only, which is most probably related to the armhf test runners being executed as LXD containers on a base system using an older kernel:

autopkgtest [09:46:55]: test upstream-root: [-----------------------
@@@ Running upstream tests (root required) @@@
## Preparation ##
## libcap2 tests ##
user namespace launched exploit worked - upgrade kernel
autopkgtest [09:46:58]: test upstream-root: -----------------------]
autopkgtest [09:47:02]: test upstream-root: - - - - - - - - - - results - - - - - - - - - -
upstream-root FAIL non-zero exit status 1

That "upstream-root" test is a new case, which is not yet available in the -release version of libcap2 (1:2.44-1build3), therefore this should not be considered a regression, but rather an issue with the test infrastructure. IMO this test case should be skipped or hinted on armhf.