[OpenNebula][Linux][qtdeclarative] tst_qquickimage fails

/home/qt/work/qt/qtdeclarative/tests/auto/quick/qquickimage/target_wrapper.sh  ./tst_qquickimage mirror
********* Start testing of tst_qquickimage *********
Config: Using QtTest library 5.7.1, Qt 5.7.1 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 4.8.1 20130909 [gcc-4_8-branch revision 202388])
PASS   : tst_qquickimage::initTestCase()
FAIL!  : tst_qquickimage::mirror() Compared QImages differ in format.
   Actual   (screenshots[fillMode]): 4
   Expected (img): 7
   Loc: [tst_qquickimage.cpp(377)]
PASS   : tst_qquickimage::cleanupTestCase()
Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 1497ms
********* Finished testing of tst_qquickimage *********