feat: better error messages

Provide "No such file or directory" error if file is not found.
Provide "Unknown Error" if other error found

Should reduce confusion from the generic other error

src/main.rs

@@ -11,17 +11,19 @@ mod progress;
 mod utils;
 
 use crate::cli::build_cli;
+use crate::progress::RuntimeErrors;
 use clap::parser::ValuesRef;
 use dir_walker::WalkData;
 use display::InitialDisplayData;
 use filter::AggregateData;
 use progress::PIndicator;
-use progress::ORDERING;
 use regex::Error;
 use std::collections::HashSet;
 use std::fs::read_to_string;
 use std::panic;
 use std::process;
+use std::sync::Arc;
+use std::sync::Mutex;
 use sysinfo::{System, SystemExt};
 
 use self::display::draw_it;
@@ -195,11 +197,12 @@ fn main() {
         ignore_hidden,
         follow_links,
         progress_data: indicator.data.clone(),
+        errors: Arc::new(Mutex::new(RuntimeErrors::default())),
     };
     let stack_size = config.get_custom_stack_size(&options);
     init_rayon(&stack_size);
 
-    let top_level_nodes = walk_it(simplified_dirs, walk_data);
+    let top_level_nodes = walk_it(simplified_dirs, &walk_data);
 
     let tree = match summarize_file_types {
         true => get_all_file_types(&top_level_nodes, number_of_lines),
@@ -216,12 +219,32 @@ fn main() {
         }
     };
 
-    let failed_permissions = indicator.data.no_permissions.load(ORDERING);
-    indicator.stop();
     // Must have stopped indicator before we print to stderr
+    indicator.stop();
+
+    let final_errors = walk_data.errors.lock().unwrap();
+    let failed_permissions = final_errors.no_permissions;
+    if !final_errors.file_not_found.is_empty() {
+        let err = final_errors
+            .file_not_found
+            .iter()
+            .map(|a| a.as_ref())
+            .collect::<Vec<&str>>()
+            .join(", ");
+        eprintln!("No such file or directory: {}", err);
+    }
     if failed_permissions {
         eprintln!("Did not have permissions for all directories");
     }
+    if !final_errors.unknown_error.is_empty() {
+        let err = final_errors
+            .unknown_error
+            .iter()
+            .map(|a| a.as_ref())
+            .collect::<Vec<&str>>()
+            .join(", ");
+        eprintln!("Unknown Error: {}", err);
+    }
 
     if let Some(root_node) = tree {
         let idd = InitialDisplayData {