diff --git a/src/meta_plugin.rs b/src/meta_plugin.rs
index 40015b2..a65f1d9 100644
--- a/src/meta_plugin.rs
+++ b/src/meta_plugin.rs
@@ -196,7 +196,9 @@ pub trait MetaPlugin {
     
     // Access to outputs mapping with default implementation
     fn outputs(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
-        static EMPTY: std::collections::HashMap<String, serde_yaml::Value> = std::collections::HashMap::new();
+        use once_cell::sync::Lazy;
+        static EMPTY: Lazy<std::collections::HashMap<String, serde_yaml::Value>> = 
+            Lazy::new(|| std::collections::HashMap::new());
         &EMPTY
     }
     
@@ -206,7 +208,9 @@ pub trait MetaPlugin {
     
     // Access to options mapping with default implementation
     fn options(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
-        static EMPTY: std::collections::HashMap<String, serde_yaml::Value> = std::collections::HashMap::new();
+        use once_cell::sync::Lazy;
+        static EMPTY: Lazy<std::collections::HashMap<String, serde_yaml::Value>> = 
+            Lazy::new(|| std::collections::HashMap::new());
         &EMPTY
     }
     
diff --git a/src/meta_plugin/binary.rs b/src/meta_plugin/binary.rs
index 427645f..5be8710 100644
--- a/src/meta_plugin/binary.rs
+++ b/src/meta_plugin/binary.rs
@@ -69,9 +69,10 @@ impl MetaPlugin for BinaryMetaPlugin {
             }
         }
 
+        let is_finalized = !metadata.is_empty();
         MetaPluginResponse {
             metadata,
-            is_finalized: !metadata.is_empty(),
+            is_finalized,
         }
     }
 
@@ -121,7 +122,7 @@ impl MetaPlugin for BinaryMetaPlugin {
         self.base.options_mut()
     }
     
-    fn configure_options(&mut self, options: &std::collections::HashMap<String, serde_yaml::Value>) -> Result<()> {
+    fn configure_options(&mut self, options: &std::collections::HashMap<String, serde_yaml::Value>) -> anyhow::Result<()> {
         if let Some(max_buffer_size) = options.get("max_buffer_size") {
             if let Some(size) = max_buffer_size.as_u64() {
                 self.max_buffer_size = size as usize;
diff --git a/src/meta_plugin/magic.rs b/src/meta_plugin/magic.rs
index bf97574..0fea701 100644
--- a/src/meta_plugin/magic.rs
+++ b/src/meta_plugin/magic.rs
@@ -182,7 +182,7 @@ impl MetaPlugin for MagicFileMetaPlugin {
         "magic_file".to_string()
     }
     
-    fn configure_options(&mut self, options: &std::collections::HashMap<String, serde_yaml::Value>) -> Result<()> {
+    fn configure_options(&mut self, options: &std::collections::HashMap<String, serde_yaml::Value>) -> anyhow::Result<()> {
         if let Some(max_buffer_size) = options.get("max_buffer_size") {
             if let Some(size) = max_buffer_size.as_u64() {
                 self.max_buffer_size = size as usize;
diff --git a/src/meta_plugin/program.rs b/src/meta_plugin/program.rs
index 41d3787..ccc6f2f 100644
--- a/src/meta_plugin/program.rs
+++ b/src/meta_plugin/program.rs
@@ -162,9 +162,10 @@ impl MetaPlugin for MetaPluginProgram {
                     self.result = Some(result);
 
                     // Create metadata to be returned
+                    let result_clone = result.clone();
                     metadata.push(crate::meta_plugin::MetaData {
                         name: self.meta_name.clone(),
-                        value: result,
+                        value: result_clone,
                     });
                 }
             } else {
diff --git a/src/meta_plugin/system.rs b/src/meta_plugin/system.rs
index 1b71023..9d5a2a3 100644
--- a/src/meta_plugin/system.rs
+++ b/src/meta_plugin/system.rs
@@ -1,8 +1,7 @@
 use gethostname::gethostname;
 use std::env;
 use std::process;
-use uzers::{get_current_uid, get_current_gid, get_user_by_uid, get_group_by_gid};
-use crate::meta_plugin::{MetaPlugin, MetaPluginResponse};
+use crate::meta_plugin::MetaPlugin;
 
 #[derive(Debug, Clone, Default)]
 pub struct CwdMetaPlugin {