message: Add future-incompat tracking issue number.
diff: @@ -484,7 +484,7 @@ pub trait ArgMatchesExt {
  config
  .cli_unstable()
  // TODO: Tracking issue
  - .fail_if_stable_opt("--future-incompat-report", 0)?;
  + .fail_if_stable_opt("--future-incompat-report", 9241)?;
  if !config.cli_unstable().enable_future_incompat_feature {
  anyhow::bail!(
  