Tests failure on arm64

We update pyside 2 in Debian to version 5.13.2

During the build we run the tests with the following command:

xvfb-run python3 testrunner.py test

It uses Python 3.7

The test suite fails on arm64 :

https://buildd.debian.org/status/fetch.php?pkg=pyside2&arch=arm64&ver=5.13.2-1&stamp=1574206970&raw=0

Failure log:

RUN 1: 8/459 Test #8: pysidetest_new_inherited_functions_test .........Child aborted***Exception: 0.92 sec
RUN 1: QStandardPaths: XDG_RUNTIME_DIR points to non-existing path '/run/user/2952', please create it with 0700 permissions.
RUN 1: qt.glx: qglx_findConfig: Failed to finding matching FBConfig for QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize -1, redBufferSize 1, greenBufferSize 1, blueBufferSize 1, alphaBufferSize -1, stencilBufferSize -1, samples -1, swapBehavior QSurfaceFormat::SingleBuffer, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::NoProfile)
RUN 1: qt.glx: qglx_findConfig: Failed to finding matching FBConfig for QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize -1, redBufferSize 1, greenBufferSize 1, blueBufferSize 1, alphaBufferSize -1, stencilBufferSize -1, samples -1, swapBehavior QSurfaceFormat::SingleBuffer, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::NoProfile)
RUN 1: Could not initialize GLX

[...]

RUN 1: Start 458: QtWebEngine_web_engine_initialize
RUN 1: 458/459 Test #458: QtWebEngine_web_engine_initialize ...............Child aborted***Exception: 0.59 sec
RUN 1: QStandardPaths: XDG_RUNTIME_DIR points to non-existing path '/run/user/2952', please create it with 0700 permissions.
RUN 1: qt.glx: qglx_findConfig: Failed to finding matching FBConfig for QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize -1, redBufferSize 1, greenBufferSize 1, blueBufferSize 1, alphaBufferSize -1, stencilBufferSize -1, samples -1, swapBehavior QSurfaceFormat::SingleBuffer, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::NoProfile)
RUN 1: qt.glx: qglx_findConfig: Failed to finding matching FBConfig for QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize -1, redBufferSize 1, greenBufferSize 1, blueBufferSize 1, alphaBufferSize -1, stencilBufferSize -1, samples -1, swapBehavior QSurfaceFormat::SingleBuffer, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::NoProfile)
RUN 1: Could not initialize GLX

[...]

RES 5: FAIL! pysidetest::new_inherited_functions_test()
RES 5: BFAIL QtCore::qflags_test()
RES 5: BFAIL QtScriptTools::debugger_test()
RES 5: BFAIL QtWebEngineCore::web_engine_custom_scheme()
RES 5: FAIL! QtWebEngine::web_engine_initialize()
RES 5: BFAIL QtWebEngineWidgets::pyside-474-qtwebengineview()