Fix CI, apply suggestions

Author: blyxyas

Cargo.toml

@@ -26,7 +26,7 @@ rustc_tools_util = "0.3.0"
 tempfile = { version = "3.2", optional = true }
 termize = "0.1"
 color-print = "0.3.4" # Sync version with Cargo
-anstream = { version = "0.5.0" }
+anstream = "0.5.0"
 
 [dev-dependencies]
 ui_test = "0.20"

src/driver.rs

@@ -7,6 +7,7 @@
 #![warn(rust_2018_idioms, unused_lifetimes)]
 // warn on rustc internal lints
 #![warn(rustc::internal)]
+#![allow(clippy::ignored_unit_patterns)]
 
 // FIXME: switch to something more ergonomic here, once available.
 // (Currently there is no way to opt into sysroot crates without `extern crate`.)
@@ -165,7 +166,7 @@ impl rustc_driver::Callbacks for ClippyCallbacks {
 }
 
 fn display_help() {
-    println!("{}", help_message())
+    println!("{}", help_message());
 }
 
 const BUG_REPORT_URL: &str = "https://github.com/rust-lang/rust-clippy/issues/new?template=ice.yml";
@@ -269,6 +270,7 @@ pub fn main() {
     }))
 }
 
+#[must_use]
 fn help_message() -> &'static str {
     color_print::cstr!(
 "Checks a package to catch common mistakes and improve your Rust code.
@@ -299,4 +301,4 @@ You can use tool lints to allow or deny lints from your code, e.g.:
     <yellow,bold>#[allow(clippy::needless_lifetimes)]</>
 "
     )
-}
+}

src/main.rs

@@ -1,6 +1,7 @@
 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
 // warn on lints, that are included in `rust-lang/rust`s bootstrap
 #![warn(rust_2018_idioms, unused_lifetimes)]
+#![allow(clippy::ignored_unit_patterns)]
 
 use std::env;
 use std::path::PathBuf;
@@ -143,6 +144,7 @@ where
     }
 }
 
+#[must_use]
 pub fn help_message() -> &'static str {
     color_print::cstr!(
 "Checks a package to catch common mistakes and improve your Rust code.