Fork in test should handle exceptions during creation of test class

We recently ran into a pretty severe issue where a ScalaTest test class was throwing a NPE during construction, which caused test execution to stop but for success to be reported. This meant that we were running 1/3 of our test suite instead of the full test suite and failures were not reported. Note that this was a multi-module build.

I can provide a simple test case if that helps.

The output was:

Exception in thread "Thread-32" java.io.EOFException
    at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2571)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1315)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
    at sbt.React.react(ForkTests.scala:98)
    at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.run(ForkTests.scala:66)
    at java.lang.Thread.run(Thread.java:722)
Exception in thread "Thread-32" java.io.EOFException
    at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2571)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1315)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
    at sbt.React.react(ForkTests.scala:98)
    at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.run(ForkTests.scala:66)
    at java.lang.Thread.run(Thread.java:722)
[info] Passed: : Total 0, Failed 0, Errors 0, Passed 0, Skipped 0

[michaelahlers]

Seeing this with increasing regularity, typically in CID.

[kapilsaini]

I am still facing issue when using fork in Test := true

Can some one please suggest the fix.