DeltaStoreBasedWaveletState test failures

I was compiling clean clone (modulo removing test/org/waveprotocol/box/server/robots/dataapi/DataApiServletTest.java and test/org/waveprotocol/box/server/robots/active/ActiveApiServletTest.java to workaround issue WAVE-298), and hit errors when doing 'ant':

DeltaStoreBasedWaveletStateTest testDeltaHistoryRequiresCorrectHash Error N/A

java.lang.IllegalArgumentException
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:72)
at org.waveprotocol.box.server.waveserver.DeltaStoreBasedWaveletState.readDeltasInRange(DeltaStoreBasedWaveletState.java:144)
at org.waveprotocol.box.server.waveserver.DeltaStoreBasedWaveletState.getTransformedDeltaHistory(DeltaStoreBasedWaveletState.java:350)
at org.waveprotocol.box.server.waveserver.WaveletStateTestBase.testDeltaHistoryRequiresCorrectHash(WaveletStateTestBase.java:181)

0.001

DeltaStoreBasedWaveletStateTest testSingleDeltaHistoryAccessible Error N/A

java.lang.IllegalArgumentException
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:72)
at org.waveprotocol.box.server.waveserver.DeltaStoreBasedWaveletState.readDeltasInRange(DeltaStoreBasedWaveletState.java:144)
at org.waveprotocol.box.server.waveserver.DeltaStoreBasedWaveletState.getTransformedDeltaHistory(DeltaStoreBasedWaveletState.java:350)
at org.waveprotocol.box.server.waveserver.WaveletStateTestBase.testSingleDeltaHistoryAccessible(WaveletStateTestBase.java:195)

0.001

DeltaStoreBasedWaveletStateTest testDeltaHistoryQueriesCorrectHistory Error N/A

java.lang.IllegalArgumentException
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:72)
at org.waveprotocol.box.server.waveserver.DeltaStoreBasedWaveletState.readDeltasInRange(DeltaStoreBasedWaveletState.java:144)
at org.waveprotocol.box.server.waveserver.DeltaStoreBasedWaveletState.getTransformedDeltaHistory(DeltaStoreBasedWaveletState.java:350)
at org.waveprotocol.box.server.waveserver.WaveletStateTestBase.checkHistoryForDeltas(WaveletStateTestBase.java:230)
at org.waveprotocol.box.server.waveserver.WaveletStateTestBase.testDeltaHistoryQueriesCorrectHistory(WaveletStateTestBase.java:211)

0.001

I also got RPC test errors

RpcTest testIsStreamingRpc Error N/A

java.lang.NullPointerException
at org.waveprotocol.box.server.rpc.ServerRpcProvider.startWebSocketServer(ServerRpcProvider.java:352)
at org.waveprotocol.box.server.rpc.RpcTest.setUp(RpcTest.java:78)

0.383

RpcTest testSimpleRpc Error N/A

java.lang.NullPointerException
at org.waveprotocol.box.server.rpc.ServerRpcProvider.startWebSocketServer(ServerRpcProvider.java:352)
at org.waveprotocol.box.server.rpc.RpcTest.setUp(RpcTest.java:78)

0.001

RpcTest testFailedRpc Error N/A

java.lang.NullPointerException
at org.waveprotocol.box.server.rpc.ServerRpcProvider.startWebSocketServer(ServerRpcProvider.java:352)
at org.waveprotocol.box.server.rpc.RpcTest.setUp(RpcTest.java:78)

0.001

RpcTest testCancelStreamingRpc Error N/A

java.lang.NullPointerException
at org.waveprotocol.box.server.rpc.ServerRpcProvider.startWebSocketServer(ServerRpcProvider.java:352)
at org.waveprotocol.box.server.rpc.RpcTest.setUp(RpcTest.java:78)
0.001