Try to fix travis

.travis.yml

@@ -8,9 +8,9 @@ env:
   global:
     - MAVEN_OPTS="-Xmx1024m"
 
-cache:
-  directories:
-      - '$HOME/.m2/repository'
+#cache:
+#  directories:
+#      - '$HOME/.m2/repository'
 
 install: /bin/true
 

pom.xml

@@ -732,6 +732,13 @@
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-source-plugin</artifactId>
 					<version>2.4</version>
+					<dependencies>
+						<dependency>
+							<groupId>org.codehaus.plexus</groupId>
+							<artifactId>plexus-utils</artifactId>
+							<version>3.0.22</version>
+						</dependency>
+					</dependencies>
 				</plugin>
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>