the build failed with compilation error:

    [error] /localhome/jenkinsakka/workspace/pr-validator-per-commit/akka-actor-tests/src/test/scala/akka/pattern/AskSpec.scala:84: value must is not a member of Boolean
    [error]       }.getMessage.contains(timeout.duration.toMillis) must be(true)

Might be better to use

    .getMessage should include (timeout.duration.toMillis.toString)