Fix diagnostic messages.

src/api/formatting.rs

@@ -3,8 +3,8 @@ use crate::packages::iter_basic::{BitRange, CharsStream, StepRange};
 use crate::parser::{ParseResult, ParseState};
 use crate::types::StringsInterner;
 use crate::{
-    Engine, ExclusiveRange, FnPtr, ImmutableString, InclusiveRange, OptimizationLevel, Position,
+    Engine, ExclusiveRange, FnPtr, ImmutableString, InclusiveRange, Position, RhaiError,
-    RhaiError, SmartString, ERR,
+    SmartString, ERR,
 };
 use std::any::type_name;
 #[cfg(feature = "no_std")]
@@ -288,7 +288,7 @@ impl Engine {
             stream.peekable(),
             &mut state,
             #[cfg(not(feature = "no_optimize"))]
-            OptimizationLevel::None,
+            crate::OptimizationLevel::None,
             #[cfg(feature = "no_optimize")]
             (),
         )?;

src/bin/rhai-run.rs

@@ -51,6 +51,7 @@ fn main() {
         };
 
         // Initialize scripting engine
+        #[allow(unused_mut)]
         let mut engine = Engine::new();
 
         #[cfg(not(feature = "no_optimize"))]

src/eval/chaining.rs

@@ -543,6 +543,7 @@ impl Engine {
         let op_pos = parent.position();
 
         #[cfg(feature = "debugging")]
+        #[allow(unused_mut)]
         let mut this_ptr = this_ptr;
 
         match ChainType::from(parent) {

src/types/fn_ptr.rs

@@ -71,6 +71,7 @@ impl FnPtr {
     /// Create a new function pointer without checking its parameters.
     #[inline(always)]
     #[must_use]
+    #[allow(dead_code)]
     pub(crate) fn new_unchecked(
         name: impl Into<ImmutableString>,
         curry: StaticVec<Dynamic>,