diff --git a/crates/cairo-lang-lowering/src/optimizations/cancel_ops.rs b/crates/cairo-lang-lowering/src/optimizations/cancel_ops.rs
index b0047f8b9bc..9ab80f04cf1 100644
--- a/crates/cairo-lang-lowering/src/optimizations/cancel_ops.rs
+++ b/crates/cairo-lang-lowering/src/optimizations/cancel_ops.rs
@@ -113,10 +113,10 @@ impl<'db, 'a> CancelOpsContext<'db, 'a> {
     fn rename_var(&mut self, from: VariableId, to: VariableId) {
         self.var_remapper.renamed_vars.insert(from, to);
 
-        let mut aliases = Vec::from_iter(chain(
+        let mut aliases: Vec<_> = chain(
             std::iter::once(from),
             get_entry_as_slice(&self.aliases, &from).iter().copied(),
-        ));
+        ).collect();
         // Optimize for the case where the alias list of `to` is empty.
         match self.aliases.entry(to) {
             std::collections::hash_map::Entry::Occupied(entry) => {
diff --git a/crates/cairo-lang-utils/src/casts.rs b/crates/cairo-lang-utils/src/casts.rs
index 497e0f05eee..0ea17980f39 100644
--- a/crates/cairo-lang-utils/src/casts.rs
+++ b/crates/cairo-lang-utils/src/casts.rs
@@ -1,4 +1,4 @@
-pub trait IntoOrPanic: Sized + Copy + core::fmt::Debug {
+pub trait IntoOrPanic: Copy + core::fmt::Debug {
     fn into_or_panic<T>(self) -> T
     where
         T: TryFrom<Self> + core::fmt::Debug,