See https://discourse.phabricator-community.org/t/phabricator-asana-integration-is-broken/3244.
The Asana API no longer appears to return id from the users/me call. It returns gid instead.
The call is explicitly versioned in the URI as "1.0". All web "standards" are made up.
Anyway, it looks like we can just swap to "gid".