_id in the schema causing trouble?

[benflinn]

I get this error:

Unhandled rejection MongoError: The field 'background' is not valid for an _id index specification. Specification: { v: 2, ns: "app.bruteforce", key: { _id: 1 }, name: "_id_1", background: true, unique: false }

but it goes away if I delete the _id field in the schema?

[benflinn]

also: this didn't happen before i updated mongoose to the latest version. went from mongoose 4.11.5 to 4.13.15

[Martii]

Doesn't seem to be present in mongoose@5.2.9 with our usage.

[cbargren]

Sorry for the long delay, haven't been watching this repo very closely.

This seems to be that you're defining an index on the _id field, which you shouldn't do: Automattic/mongoose#5014 https://stackoverflow.com/questions/42378032/mongodb-3-4-2-invalidindexspecificationoption-error-the-field-unique-is-not-v/42383148

If that's not the case and you're still having this problem, reopen the ticket with the mongoose and mongodb versions you're having trouble with. Cheers!