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Piotr Karwasz commented on SUREFIRE-2073: ----------------------------------------- [~tibordigana], Thank you for your fast answer. In the end I was able to work around this limitation by compiling all test classes with Maven's default JVM (Java 8 in my case) and use a separate source folder for {{{}module-info.java{}}}. However in the long run I would like to solve the problem properly. The new design you are referring to is the one from SUREFIRE-2049? Are there some subtasks of this new design that are open to external contributors? > Surefire should fork before class scan > -------------------------------------- > > Key: SUREFIRE-2073 > URL: https://issues.apache.org/jira/browse/SUREFIRE-2073 > Project: Maven Surefire > Issue Type: Bug > Components: JUnit 5.x support > Affects Versions: 3.0.0-M6 > Reporter: Piotr Karwasz > Priority: Major > > On projects using toolchains submodules can be compiled with a different Java > version than the main project. This can result in an > {{UnsupportedClassVersionError}} if the class scan is performed by the main > Maven JVM: > {noformat} > [ERROR] Failed to execute goal > org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test (test) on > project log4j-api-java9: Execution test of goal > org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test failed: > java.lang.UnsupportedClassVersionError: > org/apache/logging/log4j/util/java9/ProcessIdUtilTest has been compiled by a > more recent version of the Java Runtime (class file version 53.0), this > version of the Java Runtime only recognizes class file versions up to 52.0 -> > [Help 1]{noformat} > Therefore Surefire should probably fork a new instance to scan for test > classes whenever {{forkCount}} is not zero. -- This message was sent by Atlassian Jira (v8.20.1#820001)