https://ci.debian.net/data/autopkgtest/testing/amd64/c/click/18881997/log.gz

...
======================================================================
ERROR: test_debsig_install_valid_signature (click_package.tests.integration.test_signatures.TestSignatureVerification)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/autopkgtest-lxc.s_fybmd3/downtmp/build.yqQ/src/click_package/tests/integration/test_signatures.py", line 208, in test_debsig_install_valid_signature
    subprocess.check_call(
  File "/usr/lib/python3.9/subprocess.py", line 373, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/usr/bin/click', 'install', '--user=root', '/tmp/tmpfmnii6m2/org.example.debsig-valid-sig_1.0_all.click']' returned non-zero exit status 1.
----------------------------------------------------------------------
Ran 19 tests in 21.496s

FAILED (errors=1, skipped=3)
autopkgtest [15:11:19]: test run-tests.sh: -----------------------]
autopkgtest [15:11:19]: test run-tests.sh:  - - - - - - - - - - results - - - - - - - - - -
run-tests.sh         FAIL non-zero exit status 1

Control: close -1
Control: fixed -1 0.5.0-6


It seems that autopkgtest now runs successfully since 0.5.0-6.
However, there seems to be a unit test failure on ppc64el, which we
will have to investigate close (but that's not topic of this bug).

Mike