[ERROR] Failed to execute goal org.codehaus.mojo:cobertura-maven-plugin:2.7:instrument (default-cli) on project language-game:
Execution default-cli of goal org.codehaus.mojo:cobertura-maven-plugin:2.7:instrument failed:
Plugin org.codehaus.mojo:cobertura-maven-plugin:2.7 or one of its dependencies could not be resolved:
Could not find artifact com.sun:tools:jar:0 at specified path /usr/local/lib/jvm/openjdk11/../lib/tools.jar
Did something recently change in the system configuration? It was working a few months ago.
The path /usr/local/lib/jvm/openjdk11/../lib/tools.jar looks strange, the right path seems to beopenjdk11/lib/tools.jar.
Then, you are getting a warning that your project is malformed and “may not be supported in the future”. Java moved 3 versions since your last successful build (that used Java 1.8) so it’s quite possible that moment has come.
It’s also possible that the plugin version you are using doesn’t support this new JDK version.
Can you build it locally with the same system configuration (i.e. with openjdk11)?
Finally, you can move back to dist: trusty with the old Java version – though this means your project may run into problems when run with newer JRE versions.