Apply clippy::unused_trait_names lint

Cargo.toml

@@ -72,6 +72,7 @@ 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

pin-project-internal/src/pin_project/args.rs

@@ -4,12 +4,12 @@ use proc_macro2::{Span, TokenStream};
 use quote::quote;
 use syn::{
     parse::{Parse, ParseStream},
-    spanned::Spanned,
+    spanned::Spanned as _,
     Attribute, Error, Ident, Result, Token,
 };
 
 use super::PIN;
-use crate::utils::{ParseBufferExt, SliceExt};
+use crate::utils::{ParseBufferExt as _, SliceExt as _};
 
 pub(super) fn parse_args(attrs: &[Attribute]) -> Result<Args> {
     // `(__private(<args>))` -> `<args>`

pin-project-internal/src/pin_project/attribute.rs

@@ -8,7 +8,7 @@ use syn::{
 };
 
 use super::PIN;
-use crate::utils::SliceExt;
+use crate::utils::SliceExt as _;
 
 // To generate the correct `Unpin` implementation and the projection methods,
 // we need to collect the types of the pinned fields.

pin-project-internal/src/pin_project/derive.rs

@@ -1,9 +1,9 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
 use proc_macro2::{Delimiter, Group, Span, TokenStream};
-use quote::{format_ident, quote, quote_spanned, ToTokens};
+use quote::{format_ident, quote, quote_spanned, ToTokens as _};
 use syn::{
-    parse_quote, punctuated::Punctuated, token, visit_mut::VisitMut, Attribute, Error, Field,
+    parse_quote, punctuated::Punctuated, token, visit_mut::VisitMut as _, Attribute, Error, Field,
     Fields, FieldsNamed, FieldsUnnamed, Generics, Ident, Index, Item, Lifetime, LifetimeParam,
     Meta, Result, Token, Type, Variant, Visibility, WhereClause,
 };
@@ -14,7 +14,7 @@ use super::{
 };
 use crate::utils::{
     determine_lifetime_name, determine_visibility, insert_lifetime_and_bound, ReplaceReceiver,
-    SliceExt, Variants,
+    SliceExt as _, Variants,
 };
 
 pub(super) fn parse_derive(input: TokenStream) -> Result<TokenStream> {

pin-project-internal/src/pinned_drop.rs

@@ -1,14 +1,14 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
 use proc_macro2::{Span, TokenStream};
-use quote::{format_ident, quote, ToTokens};
+use quote::{format_ident, quote, ToTokens as _};
 use syn::{
-    parse_quote, spanned::Spanned, token::Colon, visit_mut::VisitMut, Error, FnArg,
+    parse_quote, spanned::Spanned as _, token::Colon, visit_mut::VisitMut as _, Error, FnArg,
     GenericArgument, Ident, ImplItem, ItemImpl, Pat, PatIdent, PatType, Path, PathArguments,
     Result, ReturnType, Signature, Token, Type, TypePath, TypeReference,
 };
 
-use crate::utils::{ReplaceReceiver, SliceExt};
+use crate::utils::{ReplaceReceiver, SliceExt as _};
 
 pub(crate) fn attribute(args: &TokenStream, mut input: ItemImpl) -> TokenStream {
     let res = (|| -> Result<()> {

tests/auxiliary/macro/lib.rs

@@ -3,7 +3,7 @@
 #![allow(clippy::missing_panics_doc)]
 
 use proc_macro::TokenStream;
-use quote::{format_ident, quote, ToTokens};
+use quote::{format_ident, quote, ToTokens as _};
 use syn::{parse_quote, Field, FieldMutability, Fields, ItemStruct, Token, Visibility};
 
 fn tokens2(tokens: TokenStream) -> proc_macro2::TokenStream {