install-grinder test is broken due to Could not find shell matching: with text 'Installing Software'

15:51:37 Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0xa00367 (Install )
15:51:37 Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
15:51:37 Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0xa0040f (Add Reposi)
15:51:37 Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
15:51:38 Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0xa00367 (Install )
15:51:38 Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
15:51:56 Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0xa0008e (workspace )
15:51:56 Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
15:52:02 Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 26.816 sec
15:52:02 
15:52:02 Testcase: testInstall took 26.254 sec
15:52:02 	Caused an ERROR
15:52:02 Internal error
15:52:02 java.lang.RuntimeException: Internal error
15:52:02 	at org.jboss.tools.tests.installation.InstallTest.continueInstall(InstallTest.java:213)
15:52:02 	at org.jboss.tools.tests.installation.InstallTest.continueInstall(InstallTest.java:147)
15:52:02 	at org.jboss.tools.tests.installation.InstallTest.installFromSite(InstallTest.java:133)
15:52:02 	at org.jboss.tools.tests.installation.InstallTest.testInstall(InstallTest.java:78)
15:52:02 	at org.eclipse.swtbot.swt.finder.junit.internal.CapturingFrameworkMethod.invokeExplosively(CapturingFrameworkMethod.java:47)
15:52:02 	at org.eclipse.swtbot.swt.finder.junit.SWTBothttps://dev-platform-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/jbosstools-install-grinder.install-tests.matrix_master/PROJECT=devstudio,eclipseID=eclipse_downloads_drops4_R-4.7-201706120950_eclipse-platform-4.7-linux-gtk.tar.gz,jdk=openjdk-1.8,label_exp=rhel7-devstudio-releng/1479/consoleJunit4ClassRunner.runChild(SWTBotJunit4ClassRunner.java:75)
15:52:02 	at org.eclipse.swtbot.swt.finder.junit.SWTBotJunit4ClassRunner.run(SWTBotJunit4ClassRunner.java:60)
15:52:02 	at org.eclipse.swtbot.eclipse.junit.headless.EclipseTestRunner.run(EclipseTestRunner.java:350)
15:52:02 	at org.eclipse.swtbot.eclipse.junit.headless.EclipseTestRunner.run(EclipseTestRunner.java:208)
15:52:02 	at org.eclipse.swtbot.eclipse.junit.headless.UITestApplication.runTests(UITestApplication.java:120)
15:52:02 	at org.eclipse.e4.ui.internal.workbench.swt.E4Testable.lambda$0(E4Testable.java:73)
15:52:02 	at java.lang.Thread.run(Thread.java:748)
15:52:02 Caused by: org.eclipse.swtbot.swt.finder.exceptions.WidgetNotFoundException: Could not find shell matching: with text 'Installing Software'
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.waitUntilWidgetAppears(SWTBotFactory.java:472)
15:52:02 	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.waitUntilWidgetAppears(SWTWorkbenchBot.java:1)
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.shells(SWTBotFactory.java:116)
15:52:02 	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.shells(SWTWorkbenchBot.java:1)
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.shell(SWTBotFactory.java:106)
15:52:02 	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.shell(SWTWorkbenchBot.java:1)
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.shell(SWTBotFactory.java:97)
15:52:02 	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.shell(SWTWorkbenchBot.java:1)
15:52:02 	at org.jboss.tools.tests.installation.InstallTest.continueInstall(InstallTest.java:156)
15:52:02 Caused by: org.eclipse.swtbot.swt.finder.widgets.TimeoutException: Timeout after: 5000 ms.: Could not find shell matching: with text 'Installing Software'
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.waitUntil(SWTBotFactory.java:522)
15:52:02 	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.waitUntil(SWTWorkbenchBot.java:1)
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.waitUntil(SWTBotFactory.java:496)
15:52:02 	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.waitUntil(SWTWorkbenchBot.java:1)
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.waitUntil(SWTBotFactory.java:484)
15:52:02 	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.waitUntil(SWTWorkbenchBot.java:1)
15:52:02 	at org.eclipse.swtbot.swt.finder.SWTBotFactory.waitUntilWidgetAppears(SWTBotFactory.java:466)