The static provider currently sets the credentials expiration to the expiration of the worker. Temporary credentials cannot last longer than 31 days. But in most cases, we'll want to create worker records that expire in 1000 years (=never). The result being, you can't create a worker that lasts longer than 31 days.

Probably the ideal approach here would be to adopt the worker lifecycle stuff that Brian has built for other providers, so that a static worker can be declared to reregister at a given frequency.

https://github.com/taskcluster/taskcluster/pull/2438