4 files changed, 7 insertions, 8 deletions
diff --git a/compiler/rustc_target/src/abi/call/loongarch.rs b/compiler/rustc_target/src/abi/call/loongarch.rs
index d29b479de5d..4a2d39cc700 100644
--- a/compiler/rustc_target/src/abi/call/loongarch.rs
+++ b/compiler/rustc_target/src/abi/call/loongarch.rs
@@ -19,7 +19,7 @@ enum FloatConv {
 #[derive(Copy, Clone)]
 struct CannotUseFpConv;
 
-fn is_loongarch_aggregate<'a, Ty>(arg: &ArgAbi<'a, Ty>) -> bool {
+fn is_loongarch_aggregate<Ty>(arg: &ArgAbi<'_, Ty>) -> bool {
     match arg.layout.abi {
         Abi::Vector { .. } => true,
         _ => arg.layout.is_aggregate(),
@@ -290,7 +290,7 @@ fn classify_arg<'a, Ty, C>(
     }
 }
 
-fn extend_integer_width<'a, Ty>(arg: &mut ArgAbi<'a, Ty>, xlen: u64) {
+fn extend_integer_width<Ty>(arg: &mut ArgAbi<'_, Ty>, xlen: u64) {
     if let Abi::Scalar(scalar) = arg.layout.abi {
         if let abi::Int(i, _) = scalar.primitive() {
             // 32-bit integers are always sign-extended
diff --git a/compiler/rustc_target/src/abi/call/riscv.rs b/compiler/rustc_target/src/abi/call/riscv.rs
index 1cb360f834e..34280d38e34 100644
--- a/compiler/rustc_target/src/abi/call/riscv.rs
+++ b/compiler/rustc_target/src/abi/call/riscv.rs
@@ -25,7 +25,7 @@ enum FloatConv {
 #[derive(Copy, Clone)]
 struct CannotUseFpConv;
 
-fn is_riscv_aggregate<'a, Ty>(arg: &ArgAbi<'a, Ty>) -> bool {
+fn is_riscv_aggregate<Ty>(arg: &ArgAbi<'_, Ty>) -> bool {
     match arg.layout.abi {
         Abi::Vector { .. } => true,
         _ => arg.layout.is_aggregate(),
@@ -296,7 +296,7 @@ fn classify_arg<'a, Ty, C>(
     }
 }
 
-fn extend_integer_width<'a, Ty>(arg: &mut ArgAbi<'a, Ty>, xlen: u64) {
+fn extend_integer_width<Ty>(arg: &mut ArgAbi<'_, Ty>, xlen: u64) {
     if let Abi::Scalar(scalar) = arg.layout.abi {
         if let abi::Int(i, _) = scalar.primitive() {
             // 32-bit integers are always sign-extended
diff --git a/compiler/rustc_target/src/abi/mod.rs b/compiler/rustc_target/src/abi/mod.rs
index 53c9878ab87..88a0a1f8ecf 100644
--- a/compiler/rustc_target/src/abi/mod.rs
+++ b/compiler/rustc_target/src/abi/mod.rs
@@ -20,9 +20,8 @@ impl ToJson for Endian {
 }
 
 rustc_index::newtype_index! {
-    pub struct VariantIdx {
-        derive [HashStable_Generic]
-    }
+    #[derive(HashStable_Generic)]
+    pub struct VariantIdx {}
 }
 
 #[derive(Copy, Clone, PartialEq, Eq, Hash, HashStable_Generic)]
diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
index be994eda14c..988cd401f40 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -1319,7 +1319,7 @@ pub struct Target {
 }
 
 impl Target {
-    pub fn parse_data_layout<'a>(&'a self) -> Result<TargetDataLayout, TargetDataLayoutErrors<'a>> {
+    pub fn parse_data_layout(&self) -> Result<TargetDataLayout, TargetDataLayoutErrors<'_>> {
         let mut dl = TargetDataLayout::parse_from_llvm_datalayout_string(&self.data_layout)?;
 
         // Perform consistency checks against the Target information.