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ijuma/gist:3972753

Created October 29, 2012 10:15
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SBT hang with forked tests
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gistfile1.txt
Exception in thread "Thread-18" Exception in thread "main" 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.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:52)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:66)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.react$1(ForkTests.scala:56)
at sbt.ForkTests$$anonfun$apply$2$Acceptor$2$.run(ForkTests.scala:84)
at java.lang.Thread.run(Thread.java:722)
java.util.NoSuchElementException: head of empty list
at scala.collection.immutable.Nil$.head(List.scala:328)
at scala.collection.immutable.Nil$.head(List.scala:325)
@vigdorchik
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The later exception looks like it is coming from ScalaTestRunner.run, no? Sbt doesn't provide guards against frameworks throwing exceptions.

@harrah
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harrah commented Oct 29, 2012

That stack trace is interesting for another reason. It looks like we're hit by the tailrec bug. react is annotated with tailrec:

https://github.com/harrah/xsbt/blob/0.12.1/main/actions/ForkTests.scala#L52

but the trace above shows it isn't optimized into a loop.

@harrah
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harrah commented Oct 29, 2012

@vigdorchik I don't see why it is ok for sbt to avoid responsibility for handling exceptions from the test framework, especially if the error message that the user sees is the one in this gist, which gives no indication what the problem is. Are you saying that the new code provides a better error message?

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