Why is a lambda expression breaking guice error handling when i try to start jetty?

Question

I face the following problem where i try to start jetty, i get the following exeption:

Execution default-test of goal org.apache.maven.plugins:maven-surefire         


        

Answer 1

This unreadable exception occurs when you have a bad configuration in one of your guice modules and you are using Java 8 lambdas and guice 3.

I have spent a lot of time with this issue. Each time, I solved the problem by upgrading to guice 4 beta. One of its features is:

Better Java8 runtime compatibility

If you use maven:

<dependency>
  <groupId>com.google.inject</groupId>
  <artifactId>guice</artifactId>
  <version>4.0-beta5</version>
</dependency>

This new version will give you a clear error message and a proper stacktrace that will let you find the problem. When you have solved it, you can switch back to guice 3.0 or continue to using the 4.0-beta (which is - from what I've seen - already stable).

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Edited the 2016/07/13

Note that guice 4.0 and 4.1 have been released. So you should use the latest release:

<dependency>
  <groupId>com.google.inject</groupId>
  <artifactId>guice</artifactId>
  <version>4.1.0</version>
</dependency>