Moved thread pool initialisation to Args::post_process

src/args.rs

@@ -1,5 +1,6 @@
 use clap::{Parser, ArgAction};
 use glob::Pattern;
+use rayon::ThreadPoolBuilder;
 
 use crate::unit::Unit;
 
@@ -150,6 +151,11 @@ impl Args {
             self.path = vec![ ".".to_owned() ];
         }
 
+        ThreadPoolBuilder::new()
+            .num_threads(self.threads)
+            .build_global()
+            .expect("Failed to initialise threadpool");
+
         self
     }
 
@@ -195,10 +201,6 @@ impl Args {
     pub const fn quiet(&self) -> bool {
         self.quiet
     }
-    
-    pub const fn threads(&self) -> usize {
-        self.threads
-    }
 
     pub fn paths(&self) -> Iter<'_, String> {
         self.path.iter()

src/main.rs

@@ -8,23 +8,12 @@ use clap::Parser;
 
 use args::Args;
 use directory::Directory;
-use rayon::ThreadPoolBuilder;
 
 use std::process::ExitCode;
 
 fn main() -> ExitCode {
     let args = Args::parse().post_process();
 
-    match ThreadPoolBuilder::new().num_threads(args.threads()).build_global() {
-        Ok(()) => (),
-        Err(e) => {
-            if !args.minimal() && !args.quiet() {
-                eprintln!("hb: {e}");
-            }
-            return ExitCode::FAILURE;
-        }
-    };
-
     let mut total = 0;
     for path in args.paths() {
         let dir_structure = match Directory::new(path, &args) {