Unable to create index om mongo collection

[tirithen]

Maybe an old way of creating indexes is still used?

The use of system.indexes (https://github.com/vibe-d/vibe.d/blob/master/mongodb/vibe/db/mongo/collection.d#L470) is maybe not supported anymore? (https://jira.mongodb.org/browse/SERVER-10231)

Can I use the more up to date db.mycollection.createIndex() in any way instead?

My attempt to use the existing way was:

scope const(Tuple!(string, int))[] index1;
index1 ~= tuple("meta.id", 1);
collection.ensureIndex(index1);

and that gave:

vibe.db.mongo.connection.MongoDBException@/home/tirithen/.dub/packages/vibe-d-0.8.6/vibe-d/mongodb/vibe/db/mongo/connection.d(472): cannot write to 'testing.system.indexes'

[WebFreak001]

fixed by #2433