CREATING DUMPS:

MongoDB shell version: 2.5.0-pre-
connecting to: test
{ "dropped" : "test", "ok" : 1 }
MongoDB shell version: 2.5.0-pre-
connecting to: test
{ "ok" : 1 }
connected to: 127.0.0.1
Mon Apr  8 13:56:02.785 all dbs
Mon Apr  8 13:56:02.786 DATABASE: test	 to 	dump-master/test
Mon Apr  8 13:56:02.788 	test.system.indexes to dump-master/test/system.indexes.bson
Mon Apr  8 13:56:02.789 		 1 objects
Mon Apr  8 13:56:02.789 	test.coll to dump-master/test/coll.bson
Mon Apr  8 13:56:02.790 		 0 objects
Mon Apr  8 13:56:02.790 	Metadata for test.coll to dump-master/test/coll.metadata.json
MongoDB shell version: 2.2.3
connecting to: test
{ "dropped" : "test", "ok" : 1 }
MongoDB shell version: 2.2.3
connecting to: test
{ "ok" : 1 }
connected to: 127.0.0.1
Mon Apr  8 13:56:03 all dbs
Mon Apr  8 13:56:03 DATABASE: test	 to 	dump-r2.2.3/test
Mon Apr  8 13:56:03 	test.coll to dump-r2.2.3/test/coll.bson
Mon Apr  8 13:56:03 		 0 objects
Mon Apr  8 13:56:03 	Metadata for test.coll to dump-r2.2.3/test/coll.metadata.json

RESTORE TESTING:

./master/bin/mongorestore dump-master
MongoDB shell version: 2.5.0-pre-
connecting to: test
{ "dropped" : "test", "ok" : 1 }
connected to: 127.0.0.1
Mon Apr  8 13:56:03.778 dump-master/test/coll.bson
Mon Apr  8 13:56:03.778 	going into namespace [test.coll]
Mon Apr  8 13:56:03.995 	Created collection test.coll with options: { "create" : "coll", "capped" : { "$undefined" : true }, "size" : { "$undefined" : true } }
Mon Apr  8 13:56:03.995 file dump-master/test/coll.bson empty, skipping
Mon Apr  8 13:56:03.995 	Creating index: { key: { _id: 1 }, ns: "test.coll", name: "_id_" }
./r2.2.3/bin/mongorestore dump-master
MongoDB shell version: 2.2.3
connecting to: test
{ "dropped" : "test", "ok" : 1 }
connected to: 127.0.0.1
Mon Apr  8 13:56:04 dump-master/test/coll.bson
Mon Apr  8 13:56:04 	going into namespace [test.coll]
assertion: 15936 Creating collection test.coll failed. Errmsg: exception: specify size:<n> when capped is true
./master/bin/mongorestore dump-r2.2.3
MongoDB shell version: 2.5.0-pre-
connecting to: test
{ "dropped" : "test", "ok" : 1 }
connected to: 127.0.0.1
Mon Apr  8 13:56:04.423 dump-r2.2.3/test/coll.bson
Mon Apr  8 13:56:04.423 	going into namespace [test.coll]
Mon Apr  8 13:56:04.642 	Created collection test.coll with options: { "create" : "coll", "capped" : { "$undefined" : true }, "size" : { "$undefined" : true } }
Mon Apr  8 13:56:04.642 file dump-r2.2.3/test/coll.bson empty, skipping
Mon Apr  8 13:56:04.642 	Creating index: { key: { _id: 1 }, ns: "test.coll", name: "_id_" }
./r2.2.3/bin/mongorestore dump-r2.2.3
MongoDB shell version: 2.2.3
connecting to: test
{ "dropped" : "test", "ok" : 1 }
connected to: 127.0.0.1
Mon Apr  8 13:56:05 dump-r2.2.3/test/coll.bson
Mon Apr  8 13:56:05 	going into namespace [test.coll]
assertion: 15936 Creating collection test.coll failed. Errmsg: exception: specify size:<n> when capped is true