Test : jstests/queryoptimizer2.js ...
 m30999| Tue Jan 24 09:29:34 [conn1] DROP: test.queryoptimizer2
 m30001| Tue Jan 24 09:29:34 [conn6] CMD: drop test.queryoptimizer2
 m30999| Tue Jan 24 09:29:34 [conn1]  .system.indexes write for: test.system.indexes
 m30001| Tue Jan 24 09:29:34 [conn6] build index test.queryoptimizer2 { _id: 1 }
 m30001| Tue Jan 24 09:29:34 [conn6] build index done 0 records 0 secs
 m30001| Tue Jan 24 09:29:34 [conn6] build index test.queryoptimizer2 { a: 1.0 }
 m30001| Tue Jan 24 09:29:34 [conn6] build index done 120 records 0 secs
 m30999| Tue Jan 24 09:29:34 [conn1]  .system.indexes write for: test.system.indexes
 m30001| Tue Jan 24 09:29:34 [conn6] build index test.queryoptimizer2 { b: 1.0 }
 m30001| Tue Jan 24 09:29:34 [conn6] build index done 120 records 0 secs
 m30999| Tue Jan 24 09:29:34 [conn1]  .system.indexes write for: test.system.indexes
 m30001| Tue Jan 24 09:29:34 [conn6] build index test.queryoptimizer2 { z: 1.0 }
 m30001| Tue Jan 24 09:29:34 [conn6] build index done 120 records 0 secs
 m30999| Tue Jan 24 09:29:34 [conn1]  .system.indexes write for: test.system.indexes
 m30001| Tue Jan 24 09:29:34 [conn6] build index test.queryoptimizer2 { c: 1.0 }
 m30001| Tue Jan 24 09:29:34 [conn6] build index done 120 records 0 secs
assert failed
Error("Printing Stack Trace")@:0
()@src/mongo/shell/utils.js:37
("assert failed")@src/mongo/shell/utils.js:58
(undefined)@src/mongo/shell/utils.js:66
doTest((function () {t.find({$or:[{a:2, z:1}, {b:2, z:2}, {c:2, z:3}]}).batchSize(100).toArray();}),(function () {t.find({$or:[{a:2, z:1}, {c:2, z:3}]}).batchSize(100).toArray();}))@jstests/queryoptimizer2.js:31
@jstests/queryoptimizer2.js:52

assert failed
Tue Jan 24 09:29:34 Error: error loading js file: jstests/queryoptimizer2.js /mnt/home/buildbot/slave/Linux_64bit_Nightly/mongo/jstests/slowNightly/sharding_passthrough.js:84
failed to load: /mnt/home/buildbot/slave/Linux_64bit_Nightly/mongo/jstests/slowNightly/sharding_passthrough.js
 m30000| Tue Jan 24 09:29:34 got kill or ctrl c or hup signal 15 (Terminated), will terminate after current cmd ends