Netconf testtool broken after upstream version bump

04:01:23.234 [main] DEBUG o.o.y.y.m.r.u.AbstractSchemaRepository - Failed to acquire source from {closed=0, instance=org.opendaylight.yangtools.yang.model.repo.spi.PotentialSchemaSource@d4674cdc, provider=org.opendaylight.yangtools.yang.parser.rfc7950.repo.TextToASTTransformer@51c668e3}
java.lang.NullPointerException: "in" is null!
	at java.nio.channels.Channels.checkNotNull(Channels.java:67)
	at java.nio.channels.Channels.newChannel(Channels.java:347)
	at org.antlr.v4.runtime.CharStreams.fromStream(CharStreams.java:143)
	at org.antlr.v4.runtime.CharStreams.fromStream(CharStreams.java:139)
	at org.antlr.v4.runtime.CharStreams.fromStream(CharStreams.java:128)
	at org.opendaylight.yangtools.yang.parser.rfc7950.repo.YangStatementStreamSource.parseYangSource(YangStatementStreamSource.java:149)
	at org.opendaylight.yangtools.yang.parser.rfc7950.repo.YangStatementStreamSource.create(YangStatementStreamSource.java:80)
	at org.opendaylight.yangtools.yang.parser.rfc7950.repo.TextToASTTransformer.transformText(TextToASTTransformer.java:43)
	at org.opendaylight.yangtools.yang.parser.rfc7950.repo.TextToASTTransformer.lambda$new$0(TextToASTTransformer.java:34)
	at com.google.common.util.concurrent.AbstractTransformFuture$AsyncTransformFuture.doTransform(AbstractTransformFuture.java:206)
	at com.google.common.util.concurrent.AbstractTransformFuture$AsyncTransformFuture.doTransform(AbstractTransformFuture.java:195)
	at com.google.common.util.concurrent.AbstractTransformFuture.run(AbstractTransformFuture.java:115)
	at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
	at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1016)
	at com.google.common.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:672)
	at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.addListener(AbstractFuture.java:107)
	at com.google.common.util.concurrent.AbstractTransformFuture.create(AbstractTransformFuture.java:43)
	at com.google.common.util.concurrent.Futures.transformAsync(Futures.java:627)
	at org.opendaylight.yangtools.yang.model.repo.util.SchemaSourceTransformer.getSource(SchemaSourceTransformer.java:56)
	at org.opendaylight.yangtools.yang.model.repo.util.AbstractSchemaRepository.fetchSource(AbstractSchemaRepository.java:70)
	at org.opendaylight.yangtools.yang.model.repo.util.AbstractSchemaRepository.getSchemaSource(AbstractSchemaRepository.java:107)
	at org.opendaylight.yangtools.yang.parser.repo.SharedSchemaContextFactory.requestSource(SharedSchemaContextFactory.java:135)
	at com.google.common.collect.Iterators$6.transform(Iterators.java:820)
	at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)
	at java.util.AbstractCollection.toArray(AbstractCollection.java:141)
	at com.google.common.collect.ImmutableList.copyOf(ImmutableList.java:258)
	at com.google.common.collect.ImmutableList.copyOf(ImmutableList.java:229)
	at com.google.common.util.concurrent.Futures.allAsList(Futures.java:856)
	at org.opendaylight.yangtools.yang.parser.repo.SharedSchemaContextFactory.createSchemaContext(SharedSchemaContextFactory.java:105)
	at org.opendaylight.yangtools.yang.parser.repo.SharedSchemaContextFactory.createSchemaContext(SharedSchemaContextFactory.java:87)
	at org.opendaylight.netconf.test.tool.NetconfDeviceSimulator.parseSchemasToModuleCapabilities(NetconfDeviceSimulator.java:331)
	at org.opendaylight.netconf.test.tool.NetconfDeviceSimulator.start(NetconfDeviceSimulator.java:180)
	at org.opendaylight.netconf.test.tool.Main.main(Main.java:64)