tst_qopenglwindows fails on windows 7

QtQA::App::TestRunner: begin tst_qopenglwindow: [release\tst_qopenglwindow.exe] [-silent] [-o] [C:\work\ci\qt\qtbase\5.5\_artifacts\test-logs\tst_qopenglwindow.exe-testresults-00.xml,xml] [-o] [-,txt]
Testing tst_QOpenGLWindow
FAIL!  : tst_QOpenGLWindow::painter() 'w.img.pixel(QPoint(5, 5) * w.devicePixelRatio()) == qRgb(0, 0, 255)' returned FALSE. ()
tst_qopenglwindow.cpp(172) : failure location
FAIL!  : tst_QOpenGLWindow::partial(blit) Compared values are not the same
   Actual   (img.pixel(QPoint(5, 5) * w.devicePixelRatio())): 4278190080
   Expected (qRgb(0, 0, 255))                               : 4278190335
tst_qopenglwindow.cpp(226) : failure location
FAIL!  : tst_QOpenGLWindow::partial(blend) Compared values are not the same
   Actual   (img.pixel(QPoint(5, 5) * w.devicePixelRatio())): 4278190080
   Expected (qRgb(0, 0, 255))                               : 4278190335
tst_qopenglwindow.cpp(226) : failure location
Totals: 5 passed, 3 failed, 0 skipped, 0 blacklisted
QtQA::App::TestRunner: test failed, running again to see if it is flaky...
********* Start testing of tst_QOpenGLWindow *********
Config: Using QtTest library 5.5.0, Qt 5.5.0 (i386-little_endian-ilp32 shared (dynamic) release build; by MSVC 2010)
PASS   : tst_QOpenGLWindow::initTestCase()
PASS   : tst_QOpenGLWindow::create()
PASS   : tst_QOpenGLWindow::basic()
FAIL!  : tst_QOpenGLWindow::painter() 'w.img.pixel(QPoint(5, 5) * w.devicePixelRatio()) == qRgb(0, 0, 255)' returned FALSE. ()
tst_qopenglwindow.cpp(172) : failure location
FAIL!  : tst_QOpenGLWindow::partial(blit) Compared values are not the same
   Actual   (img.pixel(QPoint(5, 5) * w.devicePixelRatio())): 4278190080
   Expected (qRgb(0, 0, 255))                               : 4278190335
tst_qopenglwindow.cpp(226) : failure location
FAIL!  : tst_QOpenGLWindow::partial(blend) Compared values are not the same
   Actual   (img.pixel(QPoint(5, 5) * w.devicePixelRatio())): 4278190080
   Expected (qRgb(0, 0, 255))                               : 4278190335
tst_qopenglwindow.cpp(226) : failure location
PASS   : tst_QOpenGLWindow::underOver()
PASS   : tst_QOpenGLWindow::cleanupTestCase()
Totals: 5 passed, 3 failed, 0 skipped, 0 blacklisted
********* Finished testing of tst_QOpenGLWindow *********

QtQA::App::TestRunner: begin tst_qopenglwindow: [release\tst_qopenglwindow.exe] [-silent] [-o] [C:\work\ci\qt\qtbase\5.5\_artifacts\test-logs\tst_qopenglwindow.exe-testresults-00.xml,xml] [-o] [-,txt]
Testing tst_QOpenGLWindow
QtQA::App::TestRunner: Process exited with exit code 0x80000003 (STATUS_BREAKPOINT)
QtQA::App::TestRunner: test failed, running again to see if it is flaky...
********* Start testing of tst_QOpenGLWindow *********
Config: Using QtTest library 5.5.0, Qt 5.5.0 (i386-little_endian-ilp32 shared (dynamic) release build; by GCC 4.8.0)
PASS   : tst_QOpenGLWindow::initTestCase()
PASS   : tst_QOpenGLWindow::create()
PASS   : tst_QOpenGLWindow::basic()
PASS   : tst_QOpenGLWindow::painter()
PASS   : tst_QOpenGLWindow::partial(blit)
QtQA::App::TestRunner: Process exited with exit code 0x80000003 (STATUS_BREAKPOINT)
QtQA::App::TestRunner: test failure could be reproduced twice consecutively
QtQA::App::TestRunner: end tst_qopenglwindow: 15 seconds, exit code 2147483651
QtQA::App::TestScheduler: tst_qopenglwindow failed