Assert statements can only accept string literals

[jfecher]

Aim

Trying to write an Option::expect method:

fn expect<N>(self, message: str<N>) -> T {
    assert(self.is_some(), message);
    self._value
}

Expected Behavior

The function to typecheck and execute properly.

Bug

warning: unused variable error_message
   ┌─ std/option.nr:35:28
   │
35 │     pub fn expect<N>(self, error_message: str<N>) -> T {
   │                            ------------- unused variable 
   │

error: Assert statements can only accept string literals
   ┌─ std/option.nr:36:9
   │
36 │         assert(self._is_some, error_message);
   │         ------------------------------------
   │

Aborting due to 1 previous error

To Reproduce

Installation Method

None

Nargo Version

No response

Additional Context

No response

Would you like to submit a PR for this Issue?

No

Support Needs

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[kevaundray]

@vezenovm this seems related to the runtime error messages we mentioned before