EDIT

After updating to Java 8 compiling via mvn clean install results in a StackOverflow. (compiling in Eclipse works because it uses its own javac)

This can happen because of very large java files (MarkupTransformer.java in this case)

This can be solved by increasing the stack size for the maven compile process in the pom.xml (You have to update the maven-compiler-plugin to use the arguments)

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.6.1</version> 
        <configuration>
          <source>${java.codelevel}</source>
          <target>${java.codelevel}</target>
          <!-- fork has to be true to allow to set the compile args -->
          <fork>true</fork>
          <compilerArgs>
            <arg>-J-Xss4M</arg><!-- Increase stack size to avoid StackOverflow during parsing of large java classes-->
          </compilerArgs>
        </configuration>
      </plugin>

We anyway decided to split up the MarkupTransformer class in order to have no customized settings for the maven-compiler-plugin.

stacktrace:

The system is out of resources.
Consult the following stack trace for details.
java.lang.StackOverflowError
        at com.sun.tools.javac.parser.JavaTokenizer.readToken(JavaTokenizer.java:566)
        at com.sun.tools.javac.parser.Scanner.nextToken(Scanner.java:115)
        at com.sun.tools.javac.parser.JavacParser.nextToken(JavacParser.java:301)
        at com.sun.tools.javac.parser.JavacParser.literal(JavacParser.java:759)
        at com.sun.tools.javac.parser.JavacParser.literal(JavacParser.java:659)
        at com.sun.tools.javac.parser.JavacParser.term3(JavacParser.java:1196)
        at com.sun.tools.javac.parser.JavacParser.term2(JavacParser.java:909)
        at com.sun.tools.javac.parser.JavacParser.term1(JavacParser.java:880)
        at com.sun.tools.javac.parser.JavacParser.term(JavacParser.java:836)
        at com.sun.tools.javac.parser.JavacParser.term(JavacParser.java:816)
        at com.sun.tools.javac.parser.JavacParser.parseExpression(JavacParser.java:779)
        at com.sun.tools.javac.parser.JavacParser.arguments(JavacParser.java:1818)
        at com.sun.tools.javac.parser.JavacParser.arguments(JavacParser.java:1833)
        at com.sun.tools.javac.parser.JavacParser.term3(JavacParser.java:1294)
        at com.sun.tools.javac.parser.JavacParser.term2(JavacParser.java:909)
        at com.sun.tools.javac.parser.JavacParser.term1(JavacParser.java:880)
        at com.sun.tools.javac.parser.JavacParser.term(JavacParser.java:836)
        at com.sun.tools.javac.parser.JavacParser.term(JavacParser.java:816)
        at com.sun.tools.javac.parser.JavacParser.parseExpression(JavacParser.java:779)
        at com.sun.tools.javac.parser.JavacParser.parExpression(JavacParser.java:2299)
        at com.sun.tools.javac.parser.JavacParser.parseStatement(JavacParser.java:2483)
        at com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser.java:2391)
        at com.sun.tools.javac.parser.JavacParser.parseStatementAsBlock(JavacParser.java:2356)
        at com.sun.tools.javac.parser.JavacParser.parseStatement(JavacParser.java:2488)
        at com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser.java:2391)
        at com.sun.tools.javac.parser.JavacParser.parseStatementAsBlock(JavacParser.java:2356)
        at com.sun.tools.javac.parser.JavacParser.parseStatement(JavacParser.java:2488)
        at com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser.java:2391)
        at com.sun.tools.javac.parser.JavacParser.parseStatementAsBlock(JavacParser.java:2356)
        at com.sun.tools.javac.parser.JavacParser.parseStatement(JavacParser.java:2488)
        at com.sun.tools.javac.parser.JavacParser.blockStatement(JavacParser.java:2391)