DO NOT MERGE: manually cherry pick

Change-Id: I47b6d783f32b7c260dd806898ed880901b5f784b
Test: presubmit
Bug: n/a
diff --git a/tools/aconfig/aflags/src/main.rs b/tools/aconfig/aflags/src/main.rs
index 0a5c989..d8912a9 100644
--- a/tools/aconfig/aflags/src/main.rs
+++ b/tools/aconfig/aflags/src/main.rs
@@ -289,7 +289,7 @@
     let output = match cli.command {
         Command::List { use_new_storage: true, container } => {
             list(FlagSourceType::AconfigStorage, container)
-                .map_err(|_| anyhow!("storage may not be enabled"))
+                .map_err(|err| anyhow!("storage may not be enabled: {err}"))
                 .map(Some)
         }
         Command::List { use_new_storage: false, container } => {