terraform instance-profile/master_profile" has no associated IAM Roles

[tayzlor]

1 error(s) occurred:

• aws_instance.master.2: Error launching source instance: InvalidParameterValue: IAM Instance Profile "arn:aws:iam::300835344128:instance-profile/master_profile" has no associated IAM Roles
  status code: 400, request id: 2693153b-2c04-4d0a-97bb-74dc92ad555d

Terraform does not automatically rollback in the face of errors.
Instead, your Terraform state file has been partially updated with
any resources that successfully completed. Please address the error
above and apply again to incrementally change your infrastructure.

[tayzlor]

This sounds related hashicorp/terraform#2660

[cmlad]

See hashicorp/terraform#2660 (comment) for why this is not the same as PR hashicorp/terraform#2037.