message: revert more warnings to errors
diff: @@ -88,7 +88,7 @@ pub fn queue_builder(
  // If a panic occurs while building a crate, lock the queue until an admin has a chance to look at it.
  let res = catch_unwind(AssertUnwindSafe(|| {
  match build_queue.build_next_queue_package(&mut builder) {
  - Err(e) => warn!("Failed to build crate from queue: {}", e),
  + Err(e) => report_error(&anyhow!(e).context("Failed to build crate from queue")),
  Ok(crate_built) => {
  if crate_built {
  status.increment();
  