message: Make FetcherMetrics pub(crate).
diff: @@ -3,7 +3,7 @@ use prometheus::{IntCounter, Registry};
  use crate::unregister_metric;
  #[derive(Debug)]
  -pub struct FetcherMetrics {
  +pub(crate) struct FetcherMetrics {
  /// Number of fetch requests that found an item in the storage.
  pub found_in_storage: IntCounter,
  /// Number of fetch requests that fetched an item from peer.
  @@ -15,7 +15,7 @@ pub struct FetcherMetrics {
  }
  impl FetcherMetrics {
  - pub fn new(name: &str, registry: &Registry) -> Result<Self, prometheus::Error> {
  + pub(crate) fn new(name: &str, registry: &Registry) -> Result<Self, prometheus::Error> {
  let found_in_storage = IntCounter::new(
  format!("{}_found_in_storage", name),
  format!(
  