Needed to add perfmsr.core because org.eclipse.test requires it.

features/org.eclipse.jem.tests-feature/feature.xml

diff --git a/features/org.eclipse.jem.tests-feature/feature.xml b/features/org.eclipse.jem.tests-feature/feature.xml
index ac67200..bd57271 100644
--- a/features/org.eclipse.jem.tests-feature/feature.xml
+++ b/features/org.eclipse.jem.tests-feature/feature.xml
@@ -25,6 +25,12 @@
          download-size="0"
          install-size="0"
          version="0.0.0"/>
+         
+   <plugin
+         id="org.eclipse.perfmsr.core"
+         download-size="0"
+         install-size="0"
+         version="0.0.0"/>
 
    <plugin
          id="org.eclipse.ant.optional.junit"