m30000| Mon Feb 25 03:40:10.447 [conn6] no current chunk manager found for this shard, will initialize
 m30001| Mon Feb 25 03:40:10.465 [cleanupOldData-512b236aea018677aafc511b] waiting to remove documents for test.foo from { x: 8.0 } -> { x: 10.0 }
 m30001| Mon Feb 25 03:40:10.465 [cleanupOldData-512b236aea018677aafc511b] moveChunk starting delete for: test.foo from { x: 8.0 } -> { x: 10.0 }
 m30001| Mon Feb 25 03:40:10.465 [cleanupOldData-512b236aea018677aafc511b] moveChunk deleted 2 documents for test.foo from { x: 8.0 } -> { x: 10.0 }
assert: [312] != [310] are not equal : undefined
Error: Printing Stack Trace
    at printStackTrace (src/mongo/shell/utils.js:37:7)
    at doassert (src/mongo/shell/assert.js:6:1)
    at Function.assert.eq (src/mongo/shell/assert.js:32:1)
    at /data/buildslaves/Linux_RHEL_64bit_Nightly/mongo/jstests/sharding/migrateBig.js:59:8
Mon Feb 25 03:40:10.501 JavaScript execution failed: [312] != [310] are not equal : undefined at src/mongo/shell/assert.js:L7
failed to load: /data/buildslaves/Linux_RHEL_64bit_Nightly/mongo/jstests/sharding/migrateBig.js