clippy issues

.github/workflows/format-build.yml

@@ -46,6 +46,10 @@ jobs:
           profile: minimal
           toolchain: stable
           override: true
+      - name: rustfmt
+        run: |
+          rustc --version
+          cargo fmt --all -- --check
       - run: rustup component add clippy
       - uses: actions-rs/cargo@v1
         with:

src/dns.rs

@@ -88,7 +88,7 @@ pub fn extract_ipaddr_from_dns_message(message: &Message) -> Result<IpAddr, Stri
 }
 
 pub fn extract_domain_from_dns_message(message: &Message) -> Result<String, String> {
-    let query = message.queries().get(0).ok_or("DnsRequest no query body")?;
+    let query = message.queries().first().ok_or("DnsRequest no query body")?;
     let name = query.name().to_string();
     Ok(name)
 }

src/virtdns.rs

@@ -5,7 +5,7 @@ use hashlink::{linked_hash_map::RawEntryMut, LruCache};
 use smoltcp::wire::Ipv4Cidr;
 use std::{
     collections::HashMap,
-    convert::{TryFrom, TryInto},
+    convert::TryInto,
     net::{IpAddr, Ipv4Addr, Ipv6Addr},
     str::FromStr,
     time::{Duration, Instant},
@@ -34,8 +34,8 @@ impl Default for VirtualDns {
         Self {
             next_addr: start_addr.into(),
             name_to_ip: HashMap::default(),
-            network_addr: IpAddr::try_from(cidr.network().address().into_address()).unwrap(),
-            broadcast_addr: IpAddr::try_from(cidr.broadcast().unwrap().into_address()).unwrap(),
+            network_addr: IpAddr::from(cidr.network().address().into_address()),
+            broadcast_addr: IpAddr::from(cidr.broadcast().unwrap().into_address()),
             lru_cache: LruCache::new_unbounded(),
         }
     }