This issue was originally opened by @steven-edgar as hashicorp/terraform#18655. It was migrated here as a result of the provider split. The original body of the issue is below.

Terraform Version

Terraform v0.11.7

Terraform Configuration Files

resource "github_team" "my-team" { 
name = "my-team" 
description = "This is my team" 
privacy = "closed" 
}

resource "github_team" "my-subteam" { 
name = "my-subteam" 
description = "This is my subteam" 
privacy = "closed" 
parent_team_id = "${github_team.my-team.id}" 
}

resource "github_team_membership" "my-team_github-user-1" { 
team_id = "${github_team.my-subteam.id}" 
username = "github-user-1" 
role = "maintainer" 
}

Debug Output

Crash Output

Expected Behavior

Created a github team with the creators account as maintainer

Actual Behavior

Created a github team with no members, which was therefor unmaintainable. We've had to contact Github support to have that resolved.

Steps to Reproduce

Github team "my-team" already existed and had been imported into the terraform state. We then added my-subteam and ran:
terraform init
terraform apply

Additional Context

References