Just fix some warnings

backend/src/lib.rs

@@ -1,14 +1,12 @@
 #[macro_use]
-extern crate anyhow;
-#[macro_use]
 extern crate log;
 
 use std::collections::HashMap;
 use std::fmt;
 use std::sync::Once;
 
 use fast_paths::{FastGraph, PathCalculator};
-use geo::{LineString, Point, Polygon};
+use geo::{LineString, Point};
 use geojson::{Feature, GeoJson, Geometry};
 use rstar::{primitives::GeomWithData, RTree};
 use serde::{Deserialize, Serialize};
@@ -62,6 +60,7 @@ pub struct Road {
 
 pub struct Intersection {
     id: IntersectionID,
+    #[allow(dead_code)]
     node: osm::NodeID,
     point: Point,
     roads: Vec<RoadID>,

backend/src/node_map.rs

@@ -50,9 +50,11 @@ impl<T: Copy + Ord + Debug + Serialize> NodeMap<T> {
 // A serialized NodeMap has this form in JSON. Use this to deserialize.
 #[derive(Deserialize)]
 struct InnerNodeMap<T: Copy + Ord + Debug> {
+    #[allow(dead_code)]
     id_to_node: Vec<T>,
 }
 
+#[allow(dead_code)]
 pub fn deserialize_nodemap<
     'de,
     D: Deserializer<'de>,

backend/src/route.rs

@@ -2,7 +2,6 @@ use anyhow::{bail, Result};
 use fast_paths::{FastGraph, InputGraph};
 use geo::{HaversineLength, LineString};
 use geojson::FeatureCollection;
-use rstar::primitives::GeomWithData;
 use rstar::RTree;
 
 use crate::node_map::NodeMap;
@@ -86,10 +85,15 @@ pub fn do_route(map: &mut MapModel, req: CompareRouteRequest) -> Result<FeatureC
         return Ok(FeatureCollection {
             features,
             bbox: None,
-            foreign_members: Some(serde_json::json!({
-                "direct_length": direct_length,
-                "route_length": route_length,
-            }).as_object().unwrap().clone()),
+            foreign_members: Some(
+                serde_json::json!({
+                    "direct_length": direct_length,
+                    "route_length": route_length,
+                })
+                .as_object()
+                .unwrap()
+                .clone(),
+            ),
         });
     }
     bail!("No path");

backend/src/scrape.rs

@@ -1,9 +1,9 @@
 use std::collections::HashMap;
 
 use anyhow::Result;
-use geo::{Coord, Geometry, GeometryCollection, LineString, MapCoordsInPlace, Point, Polygon};
+use geo::{Coord, LineString, Point};
 
-use crate::osm::{NodeID, OsmID, WayID};
+use crate::osm::{NodeID, WayID};
 use crate::parse_osm::Element;
 use crate::{Intersection, IntersectionID, MapModel, Road, RoadID};