Apply clippy::unused_trait_names lint

Cargo.toml

@@ -78,6 +78,7 @@ inline_asm_x86_att_syntax = "warn"
 trailing_empty_array = "warn"
 transmute_undefined_repr = "warn"
 undocumented_unsafe_blocks = "warn"
+unused_trait_names = "warn"
 # Suppress buggy or noisy clippy lints
 bool_assert_comparison = { level = "allow", priority = 1 }
 borrow_as_ptr = { level = "allow", priority = 1 } # https://github.com/rust-lang/rust-clippy/issues/8286

src/cli.rs

@@ -6,7 +6,7 @@ use anyhow::{bail, format_err, Error, Result};
 use camino::{Utf8Path, Utf8PathBuf};
 use lexopt::{
     Arg::{Long, Short, Value},
-    ValueExt,
+    ValueExt as _,
 };
 
 use crate::{
@@ -1396,7 +1396,7 @@ fn unexpected(arg: &str, subcommand: Subcommand) -> Result<()> {
 mod tests {
     use std::{
         env,
-        io::Write,
+        io::Write as _,
         path::Path,
         process::{Command, Stdio},
     };

src/context.rs

@@ -2,7 +2,7 @@
 
 use std::{
     ffi::OsString,
-    io::{self, Write},
+    io::{self, Write as _},
     path::PathBuf,
 };
 

src/json.rs

@@ -11,7 +11,7 @@ use std::{
 use anyhow::{Context as _, Result};
 use camino::Utf8PathBuf;
 use regex::Regex;
-use serde::ser::{Serialize, SerializeMap, Serializer};
+use serde::ser::{Serialize, SerializeMap as _, Serializer};
 use serde_derive::{Deserialize, Serialize};
 
 #[derive(Debug, Serialize, Deserialize)]

src/main.rs

@@ -10,7 +10,7 @@
 use std::{
     collections::{BTreeSet, HashMap},
     ffi::{OsStr, OsString},
-    io::{self, BufRead, Read, Write},
+    io::{self, BufRead as _, Read as _, Write as _},
     path::Path,
     time::SystemTime,
 };

src/term.rs

@@ -1,13 +1,13 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
 use std::{
-    io::Write,
+    io::Write as _,
     str::FromStr,
     sync::atomic::{AtomicBool, AtomicU8, Ordering},
 };
 
 use anyhow::Error;
-use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor};
+use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor as _};
 
 #[derive(Debug, Clone, Copy, PartialEq)]
 #[repr(u8)]
@@ -122,7 +122,7 @@ pub(crate) fn print_status(status: &str, color: Option<Color>, justified: bool)
 
 macro_rules! error {
     ($($msg:expr),* $(,)?) => {{
-        use std::io::Write;
+        use std::io::Write as _;
         crate::term::error::set(true);
         let mut stream = crate::term::print_status("error", Some(termcolor::Color::Red), false);
         let _ = writeln!(stream, $($msg),*);
@@ -131,7 +131,7 @@ macro_rules! error {
 
 macro_rules! warn {
     ($($msg:expr),* $(,)?) => {{
-        use std::io::Write;
+        use std::io::Write as _;
         crate::term::warn::set(true);
         let mut stream = crate::term::print_status("warning", Some(termcolor::Color::Yellow), false);
         let _ = writeln!(stream, $($msg),*);
@@ -140,15 +140,15 @@ macro_rules! warn {
 
 macro_rules! info {
     ($($msg:expr),* $(,)?) => {{
-        use std::io::Write;
+        use std::io::Write as _;
         let mut stream = crate::term::print_status("info", None, false);
         let _ = writeln!(stream, $($msg),*);
     }};
 }
 
 macro_rules! status {
     ($status:expr, $($msg:expr),* $(,)?) => {{
-        use std::io::Write;
+        use std::io::Write as _;
         let mut stream = crate::term::print_status($status, Some(termcolor::Color::Cyan), true);
         let _ = writeln!(stream, $($msg),*);
     }};

tests/auxiliary/mod.rs

@@ -3,7 +3,7 @@
 use std::{
     env,
     ffi::OsStr,
-    io::{Read, Seek, Write},
+    io::{Read as _, Seek as _, Write as _},
     mem,
     path::{Path, PathBuf},
     process::{Command, ExitStatus, Stdio},

tests/test.rs

@@ -11,7 +11,7 @@ use fs_err as fs;
 
 use self::auxiliary::{
     assert_output, cargo_llvm_cov, fixtures_path, normalize_output, perturb_one_header,
-    test_project, test_report, CommandExt,
+    test_project, test_report, CommandExt as _,
 };
 
 const SUBCOMMANDS: &[&str] = &["", "run", "report", "clean", "show-env", "nextest"];