impr: Remove usage of unstable inspect_err

Note: this commit can be reverted when MSRV can be bumped to 1.76.

src/cli.rs

@@ -271,7 +271,11 @@ impl Cli {
 
         let mut args = vec![CString::new(binary).unwrap()];
         let binary = which::which(binary)
-            .inspect_err(|e| log::error!("Cannot find the given binary: {e}"))
+            // Replace with inspect_err when result_option_inspect is stabilized
+            .map_err(|e| {
+                log::error!("Cannot find the given binary: {e}");
+                e
+            })
             .map(|ref path| CString::new(path.to_str().unwrap()))
             .unwrap_or(CString::new(""))
             .unwrap();

src/datasource/k8s.rs

@@ -57,8 +57,10 @@ impl Source for ConfigMap {
     }
 
     async fn watch(&mut self, notify: Notifier) {
-        let Ok(client) = Client::try_default().await.inspect_err(|e| {
+        // Replace with inspect_err when result_option_inspect is stabilized
+        let Ok(client) = Client::try_default().await.map_err(|e| {
             log::error!("Could not get k8s client: {e}");
+            e
         }) else {
             return;
         };
@@ -168,8 +170,10 @@ impl Source for Secret {
     }
 
     async fn watch(&mut self, notify: Notifier) {
-        let Ok(client) = Client::try_default().await.inspect_err(|e| {
+        // Replace with inspect_err when result_option_inspect is stabilized
+        let Ok(client) = Client::try_default().await.map_err(|e| {
             log::error!("Could not get k8s client: {e}");
+            e
         }) else {
             return;
         };