unit.pcre_test fails on s390 in Debian Stretch

unit.pcre_test                           w1 [ fail ]

        Test ended at 2018-11-15 12:08:21

CURRENT_TEST: unit.pcre_test

PCRE C library tests using test data from /<<PKGBUILDDIR>>/pcre/testdata

PCRE version 8.42 2018-03-20

---- Testing 8-bit library ----

Test 1: Main functionality (Compatible with Perl >= 5.10)

  OK

  OK with study

Test 2: API, errors, internals, and non-Perl stuff (not UTF-8)

Segmentation fault

** Test 2 requires a lot of stack. If it has crashed with a

** segmentation fault, it may be that you do not have enough

** stack available by default. Please see the 'pcrestack' man

** page for a discussion of PCRE's stack usage.

 - saving '/<<PKGBUILDDIR>>/builddir/mysql-test/var/1/log/unit.pcre_test/' to '/<<PKGBUILDDIR>>/builddir/mysql-test/var/log/unit.pcre_test/'

Retrying test unit.pcre_test, attempt(2/3)...

unit.pcre_test                           w1 [ retry-fail ]

        Test ended at 2018-11-15 12:08:22

CURRENT_TEST: unit.pcre_test

PCRE C library tests using test data from /<<PKGBUILDDIR>>/pcre/testdata

PCRE version 8.42 2018-03-20

---- Testing 8-bit library ----

Test 1: Main functionality (Compatible with Perl >= 5.10)

  OK

  OK with study

Test 2: API, errors, internals, and non-Perl stuff (not UTF-8)

Segmentation fault

** Test 2 requires a lot of stack. If it has crashed with a

** segmentation fault, it may be that you do not have enough

** stack available by default. Please see the 'pcrestack' man

** page for a discussion of PCRE's stack usage.

 - saving '/<<PKGBUILDDIR>>/builddir/mysql-test/var/1/log/unit.pcre_test/' to '/<<PKGBUILDDIR>>/builddir/mysql-test/var/log/unit.pcre_test/'

Test unit.pcre_test has failed 2 times, no more retries!