cargo +nightly fmt (#3540)

* cargo +nightly fmt

* add cargo-fmt check to ci

* update ci

* fmt

* fmt

* skip macro

* ignore bridges

polkadot/node/network/availability-distribution/src/metrics.rs

@@ -14,9 +14,13 @@
 // You should have received a copy of the GNU General Public License
 // along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
-use polkadot_node_subsystem_util::metrics::prometheus::{Counter, U64, Registry, PrometheusError, CounterVec, Opts};
-use polkadot_node_subsystem_util::metrics::prometheus;
-use polkadot_node_subsystem_util::metrics;
+use polkadot_node_subsystem_util::{
+	metrics,
+	metrics::{
+		prometheus,
+		prometheus::{Counter, CounterVec, Opts, PrometheusError, Registry, U64},
+	},
+};
 
 /// Label for success counters.
 pub const SUCCEEDED: &'static str = "succeeded";
@@ -31,7 +35,6 @@ pub const NOT_FOUND: &'static str = "not-found";
 #[derive(Clone, Default)]
 pub struct Metrics(Option<MetricsInner>);
 
-
 #[derive(Clone)]
 struct MetricsInner {
 	/// Number of chunks fetched.
@@ -137,4 +140,3 @@ impl metrics::Metrics for Metrics {
 		Ok(Metrics(Some(metrics)))
 	}
 }
-