More adjustments

src/interpreter/apply.rs

@@ -70,10 +70,12 @@ fn substitute(paths: &PathSet, value: Clause, body: ExprInst) -> ExprInst {
         x: substitute(right, value.clone(), x.clone()),
       }),
       (Clause::LambdaArg, None) => Ok(value.clone()),
-      (_, None) =>
-        panic!("Substitution path ends in something other than LambdaArg"),
-      (_, Some(_)) =>
-        panic!("Substitution path leads into something other than Apply"),
+      (_, None) => {
+        panic!("Substitution path ends in something other than LambdaArg")
+      },
+      (_, Some(_)) => {
+        panic!("Substitution path leads into something other than Apply")
+      },
     }
   })
   .unwrap()

src/interpreter/error.rs

@@ -23,8 +23,9 @@ impl Display for RuntimeError {
   fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
     match self {
       Self::Extern(e) => write!(f, "Error in external function: {e}"),
-      Self::NonFunctionApplication(loc) =>
-        write!(f, "Primitive applied as function at {loc:?}"),
+      Self::NonFunctionApplication(loc) => {
+        write!(f, "Primitive applied as function at {loc:?}")
+      },
     }
   }
 }