fixed warnings and typos

src/arg_opts.rs

@@ -1,4 +1,4 @@
-use std::{ffi::OsString, collections::{HashMap, HashSet}};
+use std::{ffi::OsString, collections::HashMap};
 
 #[derive(Debug, PartialEq, Eq)]
 pub enum ArgModeSpecificOpts {
@@ -85,7 +85,7 @@ impl ArgOpts {
 
                 ("config", true, vec![
                     (Mode::Restore, "full path to config file of the archive to restore"),
-                    (Mode::Check, "full path to config file of the archive to restore")
+                    (Mode::Check, "full path to config file of the archive to check")
                     ], Kind::Valued, Some("/path/to/files000000.cfg")),
 
             ].into_iter().map(|(c, must, m, k, sample)|(c, OptProp{ 

src/comp_decomp_2.rs

@@ -7,6 +7,7 @@ pub struct Conv<'a, T: DataSink> {
 }
 
 impl<'a, T: DataSink> Conv<'a, T> {
+    #[allow(dead_code)]
     pub fn get_sink(&'a self) -> &'a T {
         self.t
     }
@@ -31,10 +32,12 @@ impl<'a, T: DataSink> Compressor2<'a, T> {
         Compressor2 { enc: XzEncoder::new(Conv{ t: to }, level) }
     }
 
+    #[allow(dead_code)]
     pub fn uncompressed(&self) -> usize {
         self.enc.total_in() as usize
     }
 
+    #[allow(dead_code)]
     pub fn compressed(&self) -> usize {
         self.enc.total_out() as usize
     }
@@ -62,6 +65,7 @@ impl<'a, T: DataSink> Decompressor2<'a, T> {
         Decompressor2 { dec: XzDecoder::new(Conv{ t: to }) }
     }
 
+    #[allow(dead_code)]
     pub fn get_decoder(&'a self) -> &XzDecoder<Conv<'a, T>> {
         &self.dec
     }

src/lib.rs

@@ -38,8 +38,7 @@ mod free_space;
 use free_space::get_free_space;
 
 use std::time::{SystemTime, UNIX_EPOCH};
-use std::io::{stdin, stdout};
-use std::io::{Write, Read};
+use std::io::Read;
 
 pub fn backup<R: Read>(
     mut read_from: R,