warbler 0.9.9 + jruby 1.1.2

えー、warは出来るんですけど、動きません。泣。

致命的: Exception caught
java.lang.NullPointerException
	at org.jruby.runtime.load.LoadService.findFile(LoadService.java:466)
	at org.jruby.runtime.load.LoadService.findLibrary(LoadService.java:391)
	at org.jruby.runtime.load.LoadService.smartLoad(LoadService.java:258)
	at org.jruby.runtime.load.LoadService.require(LoadService.java:346)
	at org.jruby.Ruby.initBuiltins(Ruby.java:1158)
	at org.jruby.Ruby.init(Ruby.java:843)
	at org.jruby.Ruby.newInstance(Ruby.java:158)
	at org.jruby.javasupport.JavaEmbedUtils.initialize(JavaEmbedUtils.java:85)
	at org.jruby.rack.DefaultRackApplicationFactory.newRuntime(DefaultRackApplicationFactory.java:79)
	at org.jruby.rack.DefaultRackApplicationFactory.createApplication(DefaultRackApplicationFactory.java:144)
	at org.jruby.rack.DefaultRackApplicationFactory.newApplication(DefaultRackApplicationFactory.java:44)
	at org.jruby.rack.DefaultRackApplicationFactory.getApplication(DefaultRackApplicationFactory.java:52)
	at org.jruby.rack.PoolingRackApplicationFactory.getApplication(PoolingRackApplicationFactory.java:92)
	at org.jruby.rack.DefaultRackDispatcher.process(DefaultRackDispatcher.java:31)
	at org.jruby.rack.RackFilter.doFilter(RackFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
	at java.lang.Thread.run(Unknown Source)

http://archive.codehaus.org/jruby/user/17541412.post%40talk.nabble.com

warblerの作者Nick Siegerさんによると、

It certainly is an unusual error -- I haven't seen it before. Because
we're allowing a java stack trace to escape, I'd definitely say it's a
JRuby bug.

だって。マジ？

追記

どうやらMacのVMware Fusion上のWindows XP Home Editionではそうなるみたい。素のWindows上では大丈夫でした。うーん、なんでしょうね、原因は。