fix clippy::redundant_clone

crates/hir/src/lib.rs

@@ -1530,11 +1530,7 @@ pub fn ty(&self, db: &dyn HirDatabase) -> Type {
         let ctx = hir_ty::TyLoweringContext::new(db, &resolver);
         let environment = db.trait_environment(self.func.into());
 
-        Type {
-            krate,
-            env: environment.clone(),
-            ty: ctx.lower_ty(&db.function_data(self.func).params[0].1),
-        }
+        Type { krate, env: environment, ty: ctx.lower_ty(&db.function_data(self.func).params[0].1) }
     }
 }
 

crates/hir_def/src/nameres/attr_resolution.rs

@@ -52,7 +52,7 @@ pub(crate) fn resolve_attr_macro(
                     return Ok(ResolvedAttr::Other);
                 }
             }
-            None => return Err(UnresolvedMacro { path: ast_id.path.clone() }),
+            None => return Err(UnresolvedMacro { path: ast_id.path }),
         };
 
         Ok(ResolvedAttr::Macro(attr_macro_as_call_id(

crates/hir_ty/src/infer.rs

@@ -82,7 +82,7 @@ pub(crate) fn normalize(db: &dyn HirDatabase, owner: DefWithBodyId, ty: Ty) -> T
     let trait_env = owner
         .as_generic_def_id()
         .map_or_else(|| Arc::new(TraitEnvironment::empty(krate)), |d| db.trait_environment(d));
-    let mut table = unify::InferenceTable::new(db, trait_env.clone());
+    let mut table = unify::InferenceTable::new(db, trait_env);
 
     let ty_with_vars = table.normalize_associated_types_in(ty);
     table.resolve_obligations_as_possible();

crates/hir_ty/src/method_resolution.rs

@@ -663,7 +663,7 @@ pub fn iterate_method_candidates_dyn(
             iterate_method_candidates_for_self_ty(
                 ty,
                 db,
-                env.clone(),
+                env,
                 traits_in_scope,
                 visible_from_module,
                 name,
@@ -731,7 +731,7 @@ fn iterate_method_candidates_with_autoref(
         first_adjustment.with_autoref(Mutability::Mut),
         deref_chain,
         db,
-        env.clone(),
+        env,
         traits_in_scope,
         visible_from_module,
         name,

crates/ide_db/src/defs.rs

@@ -306,7 +306,7 @@ pub fn classify_lifetime(
 
         if let Some(it) = ast::LifetimeParam::cast(parent.clone()) {
             sema.to_def(&it).map(Into::into).map(Definition::GenericParam)
-        } else if let Some(it) = ast::Label::cast(parent.clone()) {
+        } else if let Some(it) = ast::Label::cast(parent) {
             sema.to_def(&it).map(Definition::Label)
         } else {
             None