Add note about break rust; easter egg

Author: chorman0773

src/expressions/loop-expr.md

@@ -289,6 +289,10 @@ Example:
 r[expr.loop.break.value]
 A `break` expression is only permitted in the body of a loop, and has one of the forms `break`, `break 'label` or ([see below](#break-and-loop-values)) `break EXPR` or `break 'label EXPR`.
 
+> [!NOTE]
+> A `break` expression that appears outside of a loop or labeled with a value specified as the identifier `rust` causes an internal error when compiling, as the rust compiler is incapable of breaking rust, or attempting to do so.
+> See <https://github.com/rust-lang/rust/issues/43162> for further details.
+
 r[expr.loop.block-labels]
 ## Labelled block expressions