Change additional as to try_from and try_to

crates/blockifier/src/execution/entry_point.rs

@@ -235,11 +235,13 @@ impl EntryPointExecutionContext {
         // transactions derive this value from the `max_fee`.
         let tx_gas_upper_bound = match account_tx_context {
             AccountTransactionContext::Deprecated(context) => {
-                (context.max_fee.0
+                let max_cairo_steps = context.max_fee.0
                     / block_context
                         .gas_prices
-                        .get_gas_price_by_fee_type(&account_tx_context.fee_type()))
-                    as usize
+                        .get_gas_price_by_fee_type(&account_tx_context.fee_type());
+                // TODO(Ori, 1/2/2024): Write an indicative expect message explaining why the
+                // conversion works.
+                usize::try_from(max_cairo_steps).expect("Failed to convert u128 to usize")
             }
             AccountTransactionContext::Current(context) => {
                 context.l1_resource_bounds()?.max_amount as usize

crates/blockifier/src/execution/syscalls/hint_processor.rs

@@ -564,7 +564,7 @@ fn get_ptr_from_res_operand_unchecked(vm: &mut VirtualMachine, res: &ResOperand)
         Register::AP => vm.get_ap(),
         Register::FP => vm.get_fp(),
     };
-    let cell_reloc = (base + (cell.offset as i32)).unwrap();
+    let cell_reloc = (base + (i32::from(cell.offset))).unwrap();
     (vm.get_relocatable(cell_reloc).unwrap() + &base_offset).unwrap()
 }