I'm using powermock in my code base for quite a while. After minor modification to the code, I'm getting this error when running "mvn clean install". I'm wondering how to investigate an drill down this issue.

1. Using OpenJDK 1.7.0_55 on debian linux x86_84
2. Using powermock latest version (1.6.5)
3. All the test are running using Java Agent (@rule public PowerMockRule rule = new PowerMockRule())
4. I'm compiling my code for java 1.6 (enforced using maven-compiler-plugin)

java.lang.VerifyError: Expecting a stackmap frame at branch target 17
Exception Details:
  Location:
    org/neo4j/jdbc/Driver.createExecutor(Ljava/lang/String;Ljava/util/Properties;)Lorg/neo4j/jdbc/QueryExecutor; @4: ifnonnull
  Reason:
    Expected stackmap frame at this location.
  Bytecode:
    0000000: 2ab4 0024 c700 0dbb 00b3 5912 b5b7 00b8
    0000010: bf2a b400 242b 2cb9 00ba 0300 b0