m30000| Fri Jun 22 08:09:25 [journal] info journal _rotate called inside dbMutex - ok but should be somewhat rare
assert.soon failed: function () {
    dropOp = op(true);
    return dropOp;
}, msg:undefined
Error("Printing Stack Trace")@:0
()@src/mongo/shell/utils.js:37
("assert.soon failed: function () {\n    dropOp = op(true);\n    return dropOp;\n}, msg:undefined")@src/mongo/shell/utils.js:58
((function () {dropOp = op(true);return dropOp;}))@src/mongo/shell/utils.js:167
@jstests/drop2.js:35

assert.soon failed: function () {
    dropOp = op(true);
    return dropOp;
}, msg:undefined
Fri Jun 22 08:09:26 Error: error loading js file: jstests/drop2.js /data/slave/Linux_64bit_concurrency_Nightly/mongo/jstests/slowNightly/sharding_passthrough.js:84
failed to load: /data/slave/Linux_64bit_concurrency_Nightly/mongo/jstests/slowNightly/sharding_passthrough.js