IllegalClassFormatException: Error while instrumenting class org/apache/maven/surefire/booter/ForkedBooter

[blabno]

When I run integration tests with arquillian-jacoco I get IllegalClassFormatException.

It turned out that jacoco conflicts with jrebel, so don't use arquillian-jrebel or pure jrebel together with jacoco.
If you have previously deployed your tests with jrebel, you should undeploy them and restart the server.

[bartoszmajsak]

Very specific to jrebel-extension - shall we spend time investigating it?