Terraform will perform the following actions:

  # github_membership.all_org_members["testuser"] will be destroyed
  # (because key ["testuser"] is not in for_each map)
  - resource "github_membership" "all_org_members" {
      - downgrade_on_destroy = false -> null
      - etag                 = "W/\"74a1af95e5838e42b9d9cb2fd68ac6sdfsdf52cfc89b36179358c986c29614ab6\"" -> null
      - id                   = "repo:testuser" -> null
      - role                 = "member" -> null
      - username             = "testuser" -> null
    }

  # github_team_membership.all_org_members["testuser"] will be destroyed
  # (because key ["testuser"] is not in for_each map)
  - resource "github_team_membership" "all_org_members" {
      - etag     = "W/\"b5e8cb74d2ac42b00decd0dsdfsdf6124eac975bdf1562308f720c4716c377004\"" -> null
      - id       = "13037747:testuser" -> null
      - role     = "member" -> null
      - team_id  = "13037747" -> null
      - username = "testuser" -> null
    }

Plan: 0 to add, 0 to change, 2 to destroy.
github_team_membership.all_org_members["testuser"]: Destroying... [id=13037747:testuser]
github_team_membership.all_org_members["testuser"]: Destruction complete after 1s
github_membership.all_org_members["testuser"]: Destroying... [id=repo:testuser]
╷
│ Error: DELETE https://api.github.com/orgs/repo/memberships/testuser: 404 Cannot find testuser []

│ 
│ 
╵
Error: Terraform exited with code 1.
Error: Process completed with exit code 1.