buildbot-special: sharding/remove2.js failing on Nightly Linux 64-bit SSL Amazon AMI

Jul 05 02:56	5f949c19a260...	failure	#541	Failed test_4

Jul 04 09:29	5f949c19a260...	failure	#540	Failed test_4

Jul 03 22:51	5f949c19a260...	success	#539	Build successful

assert.soon failed: function () {

        res = st.admin.runCommand( { removeshard: replTest.name } );

        printjson(res);

        return res.ok && res.msg == 'removeshard completed successfully';

    }, msg:failed to remove shard

Error: Printing Stack Trace

    at printStackTrace (src/mongo/shell/utils.js:37:15)

    at doassert (src/mongo/shell/assert.js:6:5)

    at Function.assert.soon (src/mongo/shell/assert.js:174:60)

    at removeShard (/data/buildslaves/Linux_64bit_SSL_Amazon_AMI_Nightly/mongo/jstests/sharding/remove2.js:22:12)

    at /data/buildslaves/Linux_64bit_SSL_Amazon_AMI_Nightly/mongo/jstests/sharding/remove2.js:139:1

Thu Jul  4 21:16:25.396 assert.soon failed: function () {

        res = st.admin.runCommand( { removeshard: replTest.name } );

        printjson(res);

        return res.ok && res.msg == 'removeshard completed successfully';

    }, msg:failed to remove shard at src/mongo/shell/assert.js:7

failed to load: /data/buildslaves/Linux_64bit_SSL_Amazon_AMI_Nightly/mongo/jstests/sharding/remove2.js