OSX 10.10: task260974_menuItemRectangleForComboBoxPopup test is failing

Looking at QtBase_5.5_Integration, tst_QComboBox::task260974_menuItemRectangleForComboBoxPopup is failing on OS X 10.10 with error:

2015-03-04 16:08:49.723 tst_qcombobox[18096:1286435] Persistent UI failed to open file file:///Users/qt/Library/Saved%20Application%20State/com.yourcompany.tst_qcombobox.savedState/window_40.data: No such file or directory (2)
FAIL! : tst_QComboBox::task260974_menuItemRectangleForComboBoxPopup() '(style.discoveredRect.width() <= comboBox.width())' returned FALSE. ()
Loc: [tst_qcombobox.cpp(2637)]

See for example CI logs:
http://testresults.qt.io/ci/QtBase_5.5_Integration/build_00157/macx-clang_developer-build_OSX_10.10
http://testresults.qt.io/ci/QtBase_5.5_Integration/build_00143/macx-clang_developer-build_OSX_10.10
http://testresults.qt.io/ci/QtBase_5.5_Integration/build_00141/macx-clang_developer-build_OSX_10.10
http://testresults.qt.io/ci/QtBase_5.5_Integration/build_00138/macx-clang_developer-build_OSX_10.10