various

crates/cli/src/lib.rs

@@ -453,7 +453,6 @@ pub fn test(matches: &ArgMatches, triple: Triple) -> io::Result<i32> {
 
     let arena = &arena;
     let target = &triple;
-    let opt_level = opt_level;
     let target_info = TargetInfo::from(target);
     // TODO may need to determine this dynamically based on dev builds.
     let function_kind = FunctionKind::LambdaSet;

crates/compiler/can/src/copy.rs

@@ -1108,7 +1108,7 @@ fn deep_copy_type_vars<C: CopyEnv>(
                 }
                 for uls_index in unspecialized {
                     let Uls(var, _, _) = env.source()[uls_index];
-                    descend_var!(var);
+                    let _ignored = descend_var!(var);
                 }
                 let new_ambient_function = descend_var!(ambient_function);
 

crates/compiler/derive/src/hash.rs

@@ -400,6 +400,7 @@ fn hash_newtype_tag_union(
     let hasher_var = synth_var(env.subs, Content::FlexAbleVar(None, Subs::AB_HASHER));
 
     // A
+    #[allow(clippy::redundant_locals)]
     let tag_name = tag_name;
     // t1 .. tn
     let payload_vars = payload_variables;

crates/compiler/gen_llvm/src/llvm/build.rs

@@ -4030,7 +4030,6 @@ fn const_i128<'ctx>(env: &Env<'_, 'ctx, '_>, value: i128) -> IntValue<'ctx> {
 
 fn const_u128<'ctx>(env: &Env<'_, 'ctx, '_>, value: u128) -> IntValue<'ctx> {
     // truncate the lower 64 bits
-    let value = value;
     let a = value as u64;
 
     // get the upper 64 bits

crates/compiler/mono/src/inc_dec.rs

@@ -1043,8 +1043,8 @@ fn insert_refcount_operations_binding<'a>(
 
                     closure_env_layout: _,
 
-                    /// update mode of the higher order lowlevel itself
-                        update_mode: _,
+                    // update mode of the higher order lowlevel itself
+                    update_mode: _,
 
                     passed_function,
                 }) => {

crates/compiler/mono/src/layout/intern.rs

@@ -442,7 +442,7 @@ pub trait LayoutInterner<'a>: Sized {
 pub struct InLayout<'a>(usize, std::marker::PhantomData<&'a ()>);
 impl<'a> Clone for InLayout<'a> {
     fn clone(&self) -> Self {
-        Self(self.0, Default::default())
+        *self
     }
 }
 

crates/compiler/solve/src/to_var.rs

@@ -540,6 +540,7 @@ pub(crate) fn type_to_var_help(
                 )
                 .expect("extension var could not be seen as a tag union");
 
+                #[allow(clippy::never_loop)]
                 for _ in it {
                     unreachable!("we assert that the ext var is empty; otherwise we'd already know it was a tag union!");
                 }

crates/reporting/src/error/type.rs

@@ -711,9 +711,9 @@ fn to_expr_report<'b>(
             let thing = match annotation_source {
                 TypedIfBranch {
                     index,
-                    num_branches,
+                    num_branches: 2,
                     ..
-                } if num_branches == 2 => alloc.concat([
+                } => alloc.concat([
                     alloc.keyword(if index == HumanIndex::FIRST {
                         "then"
                     } else {