tst_enginiomodel fails on Red Hat 6.6 x64

QtQA::App::TestRunner: begin tst_enginiomodel: [./tst_enginiomodel] [-silent] [-o] [/work/ci/qt/qt5/dev/_artifacts/test-logs/tst_enginiomodel-testresults-00.xml,xml] [-o] [-,txt]
Could not open a file "/home/qt/enginio/credentials" . Backend setup failed!
Testing tst_EnginioModel
FAIL! : tst_EnginioModel::initTestCase() '_backendManager.createBackend(_backendName)' returned FALSE. ()
Loc: [tst_enginiomodel.cpp(110)]
FAIL! : tst_EnginioModel::cleanupTestCase() '_backendManager.removeBackend(_backendName)' returned FALSE. ()
Loc: [tst_enginiomodel.cpp(141)]
Totals: 0 passed, 2 failed, 0 skipped, 0 blacklisted
QtQA::App::TestRunner: test failed, running again to see if it is flaky...
Could not open a file "/home/qt/enginio/credentials" . Backend setup failed!

• • • • • • • • • Start testing of tst_EnginioModel *********

Totals: 0 passed, 2 failed, 0 skipped, 0 blacklisted

• • • • • • • • • Finished testing of tst_EnginioModel *********
                  QtQA::App::TestRunner: test failure could be reproduced twice consecutively
                  QtQA::App::TestRunner: end tst_enginiomodel: 1 seconds, exit code 2
                  QtQA::App::TestScheduler: tst_enginiomodel failed