erlang crash when recreating a bucket

ns_server crashed when recreating a bucket during the regression test run
before each test we do restart couchbase-server processes.

default_dedicated (recreatebuckettests.RecreateMembaseBuckets) ... [2011-07-14 01:03:15,922] - [bucket_helper] [47782205370608] - INFO - deleting existing buckets on [ip:10.1.6.108 ssh_username:root]
[2011-07-14 01:03:25,628] - [bucket_helper] [47782205370608] - INFO - deleted bucket : default from 10.1.6.108
[2011-07-14 01:03:25,628] - [bucket_helper] [47782205370608] - INFO - waiting for bucket deletion to complete....
[2011-07-14 01:03:25,633] - [rest_client] [47782205370608] - INFO - existing buckets : []
[2011-07-14 01:03:25,667] - [rest_client] [47782205370608] - INFO - http://10.1.6.108:8091//pools/default/buckets with param: proxyPort=13210&bucketType=membase&authType=none&name=recreate-non-default-d22ca933-6505-4780-8842-c43562a85448&replicaNumber=1&ramQuotaMB=200
[2011-07-14 01:03:25,672] - [rest_client] [47782205370608] - INFO -
[2011-07-14 01:03:25,673] - [rest_client] [47782205370608] - INFO -

{'status': '202', 'content-length': '0', 'server': 'Membase Server 2.0.0r-132-g19c187f', 'location': '/pools/default/buckets/recreate-non-default-d22ca933-6505-4780-8842-c43562a85448', 'pragma': 'no-cache', 'cache-control': 'no-cache', 'date': 'Thu, 14 Jul 2011 08:03:25 GMT'}

[2011-07-14 01:03:25,673] - [bucket_helper] [47782205370608] - INFO - waiting for bucket creation to complete....
[2011-07-14 01:03:25,723] - [rest_client] [47782205370608] - INFO - existing buckets : ['recreate-non-default-d22ca933-6505-4780-8842-c43562a85448']
[2011-07-14 01:03:25,724] - [rest_client] [47782205370608] - INFO - found bucket recreate-non-default-d22ca933-6505-4780-8842-c43562a85448
[2011-07-14 01:03:25,724] - [bucket_helper] [47782205370608] - INFO - waiting for memcached bucket : recreate-non-default-d22ca933-6505-4780-8842-c43562a85448 in 10.1.6.108 to accept set ops
[2011-07-14 01:03:26,336] - [bucket_helper] [47782205370608] - ERROR - (memcachedError 7 - I'm not responsible for this vbucket when invoking set or get)
[2011-07-14 01:03:37,100] - [bucket_helper] [47782205370608] - INFO - emptySpace : 182787368 fill_ram_percentage : 1
[2011-07-14 01:03:37,101] - [bucket_helper] [47782205370608] - INFO - fill_space 1827873.68
[2011-07-14 01:03:37,101] - [bucket_helper] [47782205370608] - INFO - packetSize: 10240
[2011-07-14 01:03:37,101] - [bucket_helper] [47782205370608] - INFO - memory usage before key insertion : 26927832
[2011-07-14 01:03:37,101] - [bucket_helper] [47782205370608] - INFO - inserting 178 new keys to memcached @ 178
[2011-07-14 01:03:37,593] - [bucket_helper] [47782205370608] - ERROR - unable to verify #0 keys
[2011-07-14 01:03:37,602] - [bucket_helper] [47782205370608] - INFO - waiting for bucket deletion to complete....
[2011-07-14 01:03:37,607] - [rest_client] [47782205370608] - INFO - existing buckets : []
[2011-07-14 01:03:37,608] - [rest_client] [47782205370608] - INFO - http://10.1.6.108:8091//pools/default/buckets with param: proxyPort=13210&bucketType=membase&authType=none&name=recreate-non-default-d22ca933-6505-4780-8842-c43562a85448&replicaNumber=1&ramQuotaMB=200
[2011-07-14 01:03:37,633] - [rest_client] [47782205370608] - INFO -
[2011-07-14 01:03:37,633] - [rest_client] [47782205370608] - INFO -

{'status': '202', 'content-length': '0', 'server': 'Membase Server 2.0.0r-132-g19c187f', 'location': '/pools/default/buckets/recreate-non-default-d22ca933-6505-4780-8842-c43562a85448', 'pragma': 'no-cache', 'cache-control': 'no-cache', 'date': 'Thu, 14 Jul 2011 08:03:37 GMT'}

[2011-07-14 01:03:37,634] - [bucket_helper] [47782205370608] - INFO - waiting for bucket creation to complete....
[2011-07-14 01:03:37,669] - [rest_client] [47782205370608] - INFO - existing buckets : ['recreate-non-default-d22ca933-6505-4780-8842-c43562a85448']
[2011-07-14 01:03:37,669] - [rest_client] [47782205370608] - INFO - found bucket recreate-non-default-d22ca933-6505-4780-8842-c43562a85448
[2011-07-14 01:03:37,669] - [bucket_helper] [47782205370608] - INFO - waiting for memcached bucket : recreate-non-default-d22ca933-6505-4780-8842-c43562a85448 in 10.1.6.108 to accept set ops
[2011-07-14 01:03:38,870] - [bucket_helper] [47782205370608] - ERROR - Got empty data (remote died?). from 10.1.6.108 while setting key
[2011-07-14 01:03:43,891] - [bucket_helper] [47782205370608] - ERROR - Got empty data (remote died?). from 10.1.6.108 while setting key
[2011-07-14 01:03:48,914] - [bucket_helper] [47782205370608] - ERROR - (memcachedError 134 - Temporary failure when invoking set or get)
[2011-07-14 01:03:54,024] - [bucket_helper] [47782205370608] - ERROR - Got empty data (remote died?). from 10.1.6.108 while setting key
[2011-07-14 01:03:59,058] - [bucket_helper] [47782205370608] - ERROR - unable to reach the host @ 10.1.6.108 while setting key
[2011-07-14 01:04:04,062] - [bucket_helper] [47782205370608] - ERROR - unable to reach the host @ 10.1.6.108 while setting key