Looks like an environment issue in nightly testing:

----------System.out:(392/22034)----------
Starting: /export/local/aurora/sandbox/sca/vmsqe/jdk/nightly/fastdebug/rt_baseline/solaris-amd64/jre/bin/java -cp /export/local/aurora/sandbox/results/workDir/classes/demo/jvmti/mtrace -Dtest.classes=/export/local/aurora/sandbox/results/workDir/classes/demo/jvmti/mtrace -Xcheck:jni -Xverify:all -agentpath:/export/local/aurora/sandbox/sca/vmsqe/jdk/nightly/fastdebug/rt_baseline/solaris-amd64/jre/../demo/jvmti/mtrace/lib/libmtrace.so JFrameCreateTime
Exception in thread "main" java.awt.AWTError: Can't connect to X11 window server using '$DISPLAY_SITE' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.access$200(X11GraphicsEnvironment.java:65)
at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:115)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:74)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:259)
at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:102)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:81)
at java.awt.Window.initGC(Window.java:475)
at java.awt.Window.init(Window.java:495)
at java.awt.Window.<init>(Window.java:537)
at java.awt.Frame.<init>(Frame.java:420)
at javax.swing.JFrame.<init>(JFrame.java:226)
at JFrameCreateTime.main(JFrameCreateTime.java:43)