Nondeterministic failure in yggdrasil NIHDB specs

[nuttycom]

[error] x Properly convert raw blocks to cooked
[error]    A counter-example is '-847538703' (after 0 try)
[error]    '0' is not equal to '1' (NIHDBProjectionSpecs.scala:170)
[info]  
[error] ! step error
[error]   FileNotFoundException: File does not exist: /tmp/nihdbspecs1378877010068-0/nihdbspec003/txLog.lock (FileUtils.java:1653)
[error] org.apache.commons.io.FileUtils.forceDelete(FileUtils.java:2275)
[error] org.apache.commons.io.FileUtils.cleanDirectory(FileUtils.java:1653)
[error] org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1535)
[error] org.apache.commons.io.FileUtils.forceDelete(FileUtils.java:2270)
[error] org.apache.commons.io.FileUtils.cleanDirectory(FileUtils.java:1653)
[error] org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1535)
[error] com.precog.util.IOUtils$$anonfun$recursiveDelete$1.apply(IOUtils.scala:69)
[error] com.precog.util.IOUtils$$anonfun$recursiveDelete$1.apply(IOUtils.scala:68)
[error] com.precog.yggdrasil.nihdb.NIHDBProjectionSpecs.shutdown(NIHDBProjectionSpecs.scala:200)
[error] com.precog.yggdrasil.nihdb.NIHDBProjectionSpecs$$anonfun$map$1.apply$mcV$sp(NIHDBProjectionSpecs.scala:204)
[error] com.precog.yggdrasil.nihdb.NIHDBProjectionSpecs$$anonfun$map$1.apply(NIHDBProjectionSpecs.scala:204)
[error] com.precog.yggdrasil.nihdb.NIHDBProjectionSpecs$$anonfun$map$1.apply(NIHDBProjectionSpecs.scala:204)