Running the JUnit test scala.collection.mutable.OpenHashMapTest on the current 2.13.x branch (found here) through sbt on WSL (Windows Subsystem for Linux) causes the system to blue screen with a SYSTEM_SERVICE_EXCEPTION caused by LXCORE.SYS. I believe the culprit was freesDeletedKey (though it's hard to tell exactly which test was running right before the crash).
Windows 10 Pro Version 1803 (OS Build 17134.648)
Ubuntu 18.04.2 LTS
Oracle Java SE 1.8.0_201-b09 via ppa:webupd8team/java