Baseline usage of Surefire 2.13.

pom.xml

@@ -362,13 +362,22 @@ THE SOFTWARE.
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
-          <version>2.12.4</version>
+          <version>2.13</version> <!-- ignoring ${maven-surefire-plugin.version} -->
           <configuration>
-            <systemPropertyVariables>
-              <java.io.tmpdir>${project.build.directory}</java.io.tmpdir>
-              <forkedProcessTimeoutInSeconds>3600</forkedProcessTimeoutInSeconds>
-              <java.awt.headless>true</java.awt.headless>
-            </systemPropertyVariables>
+            <systemProperties>
+              <property>
+                <name>java.io.tmpdir</name>
+                <value>${project.build.directory}</value>
+              </property>
+              <property>
+                <name>java.awt.headless</name>
+                <value>true</value>
+              </property>
+              <property>
+                <name>forkedProcessTimeoutInSeconds</name>
+                <value>3600</value>
+              </property>
+            </systemProperties>
           </configuration>
         </plugin>
         <plugin>

test/pom.xml

@@ -196,19 +196,16 @@ THE SOFTWARE.
               <name>hudson.maven.debug</name>
               <value>${mavenDebug}</value>
             </property>
-            <property>
-              <name>java.io.tmpdir</name>
-              <value>${project.build.directory}</value>
-            </property>
             <property>
               <name>buildDirectory</name>
               <value>${project.build.directory}</value>
             </property>
-            <property>
-              <name>java.awt.headless</name>
-              <value>true</value>
-            </property>
           </systemProperties>
+          <!-- also consider parallel=methods
+          <reuseForks>true</reuseForks>
+          <forkMode>perthread</forkMode>
+          <threadCount>1</threadCount>
+          -->
         </configuration>
       </plugin>
       <plugin>