Update the rust-toolchian to nightly-2022-11-20

Signed-off-by: Quanyi Ma <eli@patch.sh>

Cargo.toml

@@ -14,7 +14,7 @@ description = """
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-anyhow = "1.0.63"
+anyhow = "1.0.66"
 thiserror = "1.0.36"
 clap = "4.0.26"
 git2 = "0.15.0"

rust-toolchain

@@ -0,0 +1 @@
+nightly-2022-11-20

src/crates/rustup.rs

@@ -2,11 +2,7 @@ use std::{
     path::{PathBuf},
 };
 
-use chrono::{Duration, NaiveDate, Utc};
-use log::{error, info};
-
 use threadpool::ThreadPool;
-use walkdir::WalkDir;
 
 use crate::{
     config::RustUpConfig,

src/download.rs

@@ -25,7 +25,7 @@ use crate::errors::{FreightResult, FreighterError};
 pub fn download_file_with_sha(url: &str, file_folder: &Path, file_name: &str) -> FreightResult {
     let sha_url = format!("{}{}", url, ".sha256");
     let sha_name = format!("{}{}", file_name, ".sha256");
-    let sha_path = file_folder.join(&sha_name);
+    let sha_path = file_folder.join(sha_name);
     //always update sha256 file
     let res = download_file(&sha_url, &sha_path, None, true).unwrap();
     if res {