message: Lower missing block body warning level to INFO.
  With fast sync it is expected that for some blocks we will only download
  headers, not bodies.
diff: @@ -1486,7 +1486,7 @@ impl Storage {
  let block_body = match maybe_block_body {
  Some(block_body) => block_body,
  None => {
  - warn!(
  + info!(
  ?block_header,
  "retrieved block header but block body is missing from database"
  );
  