s3.upload_object_via_stream now returns a generic error

Consider the following snippet:

import io
from libcloud.storage.base import Container
from libcloud.storage.drivers.google_storage import GoogleStorageDriver

driver = GoogleStorageDriver(key='GOOG0123456789ABCXYZ', secret='garbage')
container = Container(name='container', driver=driver, extra={})
driver.upload_object_via_stream(io.BytesIO(b' '), container, 'path')

I use wrong credentials on purpose. With libcloud 1.5.0, upload_object_via_stream raises libcloud.common.types.InvalidCredsError. With libcloud 2.0.0 and trunk, this returns the generic libcloud.common.types.LibcloudError with the message 'Object upload failed, Perhaps a timeout?'.

Is it possible to restore the old behavior?

Thanks for libcloud.