fix: use direct variable interpolation in format strings for clippy::uninlined_format_args lint

- Replace 'format!("...: {}", var)' with 'format!("...: {var}")' for better readability
- Fix clippy pedantic lint warnings from newer stable Rust versions
- Affects two anyhow::anyhow! error messages in Docker container setup

Author: josecelano

src/e2e/provisioned_container.rs

@@ -70,7 +70,7 @@ impl StoppedProvisionedContainer {
 
         if !output.status.success() {
             let stderr = String::from_utf8_lossy(&output.stderr);
-            return Err(anyhow::anyhow!("Docker build failed: {}", stderr));
+            return Err(anyhow::anyhow!("Docker build failed: {stderr}"));
         }
 
         info!("Docker image built successfully");
@@ -179,8 +179,7 @@ impl RunningProvisionedContainer {
                 Ok(())
             }
             Err(e) => Err(anyhow::anyhow!(
-                "Failed to setup SSH keys in container: {}",
-                e
+                "Failed to setup SSH keys in container: {e}"
             )),
         }
     }