Clippy fixes

Author: gautamprikshit1

src/test.rs

@@ -120,6 +120,7 @@ pub fn this_host_triple() -> String {
         // For windows, this host may be different to the target: we may be
         // building with i686 toolchain, but on an x86_64 host, so run the
         // actual detection logic and trust it.
+        #[allow(clippy::box_default)]
         let tp = Box::new(currentprocess::TestProcess::default());
         return currentprocess::with(tp, || TargetTriple::from_host().unwrap().to_string());
     }

tests/mock/clitools.rs

@@ -762,7 +762,7 @@ impl Config {
 
 /// Change the current distribution manifest to a particular date
 pub fn set_current_dist_date(config: &Config, date: &str) {
-    let url = Url::from_file_path(&config.distdir.as_ref().unwrap()).unwrap();
+    let url = Url::from_file_path(config.distdir.as_ref().unwrap()).unwrap();
     for channel in &["nightly", "beta", "stable"] {
         change_channel_date(&url, channel, date);
     }

tests/suite/dist.rs

@@ -1,5 +1,6 @@
 // Tests of installation and updates from a v2 Rust distribution
 // server (mocked on the file system)
+#![allow(clippy::type_complexity)]
 
 use std::cell::Cell;
 use std::collections::HashMap;