update rust to 1.79; fix warnings

crates/dscvr-canister-config/src/schema/dfx.rs

@@ -151,10 +151,10 @@ impl DfxConfig {
 
     fn update_names(&mut self) {
         for (k, val) in self.canisters.iter_mut() {
-            val.name = k.clone();
+            val.name.clone_from(k);
         }
         for (k, val) in self.networks.iter_mut() {
-            val.name = k.clone();
+            val.name.clone_from(k);
         }
     }
 

crates/dscvr-canister-config/src/schema/dscvr.rs

@@ -111,8 +111,8 @@ impl DSCVRConfig {
                 .and_then(|canister_network| canister_network.provisioned_instances.clone());
             for (name, network) in canister.networks.iter_mut() {
                 if copy_to_all || network_name.as_ref().unwrap() == name {
-                    network.available_instances = available.clone();
-                    network.provisioned_instances = provisioned.clone();
+                    network.available_instances.clone_from(&available);
+                    network.provisioned_instances.clone_from(&provisioned);
                 }
             }
         }

crates/ic-canister-logger/src/lib.rs

@@ -7,6 +7,7 @@ use tracing_subscriber::fmt::time::FormatTime;
 
 pub mod scoped_instruction_counter;
 
+#[allow(dead_code)]
 struct IcStdout;
 
 impl Write for IcStdout {
@@ -27,8 +28,10 @@ impl Write for IcStdout {
     }
 }
 
+#[allow(dead_code)]
 struct IcTimer;
 
+#[allow(dead_code)]
 #[cfg(not(target_arch = "wasm32"))]
 fn current_time_nanos() -> u64 {
     time::OffsetDateTime::now_utc().unix_timestamp_nanos() as u64

rust-toolchain.toml

@@ -1,4 +1,4 @@
 [toolchain]
-channel = "1.77.2"
+channel = "1.79.0"
 components = ["rustfmt", "clippy"]
 targets = ["wasm32-unknown-unknown"]