Declarative: tst_PropertyRequirements::constantOrNotifyableMain() asserts

********* Start testing of tst_PropertyRequirements *********
Config: Using QtTest library 5.12.0, Qt 5.12.0 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 7.2.0)
PASS   : tst_PropertyRequirements::initTestCase()
QFATAL : tst_PropertyRequirements::constantOrNotifyableMain() ASSERT: "!isEmpty()" in file /..../qt-512d/qtbase/include/QtCore/../../src/corelib/tools/qlist.h, line 347
FAIL!  : tst_PropertyRequirements::constantOrNotifyableMain() Received a fatal error.
   Loc: [Unknown file(0)]
Totals: 1 passed, 1 failed, 0 skipped, 0 blacklisted, 176ms
********* Finished testing of tst_PropertyRequirements *********