feat(efiboot): improve logging in efiboot boot delete

efiboot/src/cli/boot/delete.rs

@@ -6,18 +6,22 @@ pub fn run(manager: &mut dyn VarManager, id: u16) -> ExitCode {
     // in this function, we assume that boot entry presence and boot order id presence are not correlated,
     // so we need to remove both of them, no matter if one of these steps raises an error
 
-    // delete the entry (note we do not raise the error, see above)
-    #[allow(unused_must_use)]
-    {
-        manager.delete(&Variable::new(&id.boot_var_name()));
+    // delete the entry
+    match manager.delete(&Variable::new(&id.boot_var_name())) {
+        Ok(_) => println!("Deleted entry with success"),
+        Err(efivar::Error::VarNotFound { var: _ }) => eprintln!("Boot entry not found"),
+        Err(err) => eprintln!("Failed to delete entry: {}", err),
     }
 
     // remove it from boot order
     let mut ids = manager.get_boot_order().unwrap();
+    let old_size = ids.len();
     ids.retain(|v| *v != id);
-    manager.set_boot_order(ids).unwrap();
-
-    println!("Deleted entry with success");
+    if old_size == ids.len() {
+        eprintln!("Failed to remove id from boot order");
+    } else {
+        manager.set_boot_order(ids).unwrap();
+    }
 
     ExitCode::SUCCESS
 }