diff -r 5b87d3fc1093 -r 7dd81e82d083 src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/inlining/PolymorphicInliningTest.java
--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/inlining/PolymorphicInliningTest.java	Thu Nov 15 21:05:47 2018 +0100
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/inlining/PolymorphicInliningTest.java	Thu Nov 15 09:04:07 2018 -0800
@@ -48,6 +48,8 @@
 import org.graalvm.compiler.phases.tiers.HighTierContext;
 import org.graalvm.compiler.test.SubprocessUtil;
 import org.junit.Assert;
+import org.junit.Assume;
+import org.junit.Before;
 import org.junit.Test;
 
 import java.io.IOException;
@@ -55,6 +57,11 @@
 
 public class PolymorphicInliningTest extends GraalCompilerTest {
 
+    @Before
+    public void checkJavaAgent() {
+        Assume.assumeFalse("Java Agent found -> skipping", SubprocessUtil.isJavaAgentAttached());
+    }
+
     @Test
     public void testInSubprocess() throws InterruptedException, IOException {
         String recursionPropName = getClass().getName() + ".recursion";