ding-libs ftpfs in cosmic

https://launchpadlibrarian.net/418304942/buildlog_ubuntu-cosmic-amd64.ding-libs_0.6.1-1_BUILDING.txt.gz

seems to be fixed in disco.

=======================================
   ding-libs 0.6.1: ./test-suite.log
=======================================

# TOTAL: 20
# PASS: 19
# SKIP: 0
# XFAIL: 0
# FAIL: 1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: ini_validators_ut_check
=============================

Running suite(s): ini_validators
94%: Checks: 18, Failures: 1, Errors: 0
ini/ini_validators_ut_check.c:610:F:ini_allowed_options:test_ini_allowed_options_wrong_regex:0: Got msg: [[rule/options_for_foo]: Cannot compile regular expression from option 'section_re'. Error: 'Unmatched [, [^, [:, [., or [=']
FAIL ini_validators_ut_check (exit status: 1)

============================================================================
Testsuite summary for ding-libs 0.6.1
============================================================================
# TOTAL: 20
# PASS: 19
# SKIP: 0
# XFAIL: 0
# FAIL: 1
# XPASS: 0
# ERROR: 0
============================================================================
See ./test-suite.log
Please report to <email address hidden>
============================================================================