Since the update to Warnings Next Generation 8.0.0, all C# projects in our environment fail because of the following exception:

[MSBuild] -> found 147 issues (skipped 1481 duplicates)ERROR: Build step failed with exceptionjava.lang.IllegalArgumentException: 'other' has different root at sun.nio.fs.WindowsPath.relativize(WindowsPath.java:392) at 

The full stack trace is in the attachment.

This seems to be a result of the following improvement:

JENKINS-58538  JENKINS-57556  Replace absolute paths with relative paths for issues (#358) @uhafner

Perhaps this jdk bug is also relevant:

https://bugs.java.com/bugdatabase/view_bug.do?bug_id=6226081