Comment 0 for bug 1585942

This error appeared when running unit tests for a QML app in out Jenkins infrastructure, on arm64 only: https://launchpadlibrarian.net/261581280/buildlog_ubuntu-yakkety-arm64.ubuntu-system-settings-online-accounts_0.7+16.10.20160525.1-0ubuntu1_BUILDING.txt.gz

Pasting the relevant lines here in case the link above goes away:

=======================
QT_PLUGIN_PATH=/usr/lib/aarch64-linux-gnu/qt5/plugins LD_LIBRARY_PATH=/usr/lib/aarch64-linux-gnu${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH} xvfb-run -s '-screen 0 640x480x24' -a dbus-test-runner -t ./tst_online_accounts_qml
DBus daemon: unix:abstract=/tmp/dbus-2tbhBHxLZq,guid=03f9df417d619b79067a68045745ad95
task-0: Started with PID: 16930
task-0: ********* Start testing of online_accounts_qml *********
task-0: Config: Using QtTest library 5.5.1, Qt 5.5.1 (arm64-little_endian-lp64 shared (dynamic) release build; by GCC 5.3.1 20160519)
task-0: PASS : online_accounts_qml::AccountCreationPage::initTestCase()
task-0: QWARN : online_accounts_qml::AccountCreationPage::test_fallback() file:///dummy/path/testPlugin/Main.qml: File not found
task-0: PASS : online_accounts_qml::AccountCreationPage::test_fallback()
task-0: QWARN : online_accounts_qml::AccountCreationPage::test_flickable() file:///dummy/path/testPlugin/Main.qml: File not found
task-0: PASS : online_accounts_qml::AccountCreationPage::test_flickable()
task-0: PASS : online_accounts_qml::AccountCreationPage::cleanupTestCase()
task-0: QWARN : online_accounts_qml::UnknownTestFunc() QEGLPlatformContext: Failed to make temporary surface current, format not updated
task-0: PASS : online_accounts_qml::AuthorizationPage::initTestCase()
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_1_one_account() file:///«BUILDDIR»/ubuntu-system-settings-online-accounts-0.7+16.10.20160525.1/online-accounts-ui/qml/AuthorizationPage.qml:54: TypeError: Cannot call method 'indexOf' of undefined
task-0: PASS : online_accounts_qml::AuthorizationPage::test_1_one_account()
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_2_add_another(with button) file:///«BUILDDIR»/ubuntu-system-settings-online-accounts-0.7+16.10.20160525.1/online-accounts-ui/qml/AuthorizationPage.qml:54: TypeError: Cannot call method 'indexOf' of undefined
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_2_add_another(with button) file:///«BUILDDIR»/ubuntu-system-settings-online-accounts-0.7+16.10.20160525.1/online-accounts-ui/qml/AuthorizationPage.qml:79:23: Unable to assign [undefined] to QString
task-0: PASS : online_accounts_qml::AuthorizationPage::test_2_add_another(with button)
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_2_add_another(with button) [PERFORMANCE]: Last frame took 254 ms to render.
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_2_add_another(without button) file:///«BUILDDIR»/ubuntu-system-settings-online-accounts-0.7+16.10.20160525.1/online-accounts-ui/qml/AuthorizationPage.qml:54: TypeError: Cannot call method 'indexOf' of undefined
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_2_add_another(without button) file:///«BUILDDIR»/ubuntu-system-settings-online-accounts-0.7+16.10.20160525.1/online-accounts-ui/qml/AuthorizationPage.qml:79:23: Unable to assign [undefined] to QString
task-0: PASS : online_accounts_qml::AuthorizationPage::test_2_add_another(without button)
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_2_add_another(without button) [PERFORMANCE]: Last frame took 210 ms to render.
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_3_many_accounts(first account) [PERFORMANCE]: Last frame took 146 ms to render.
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_3_many_accounts(first account) file:///«BUILDDIR»/ubuntu-system-settings-online-accounts-0.7+16.10.20160525.1/online-accounts-ui/qml/AuthorizationPage.qml:54: TypeError: Cannot call method 'indexOf' of undefined
task-0: QWARN : online_accounts_qml::AuthorizationPage::test_3_many_accounts(first account) file:///«BUILDDIR»/ubuntu-system-settings-online-accounts-0.7+16.10.20160525.1/online-accounts-ui/qml/AuthorizationPage.qml:79:23: Unable to assign [undefined] to QString
task-0: PASS : online_accounts_qml::AuthorizationPage::test_3_many_accounts(first account)
Mesa 11.2.1 implementation error: Failed to link fixed function fragment shader: error: count of uniform locations > MAX_UNIFORM_LOCATIONS(4294967295 > 98304)

Please report at https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa
task-0: Exited with status 139
task-0: Shutting down
DBus daemon: Shutdown
=======================

This happened 2 out of 2 times, after which I disabled running the unit tests for arm64.