src/test/ui/parser/removed-syntax-uniq-mut-expr.stderr

error: expected expression, found keyword `mut`
  --> $DIR/removed-syntax-uniq-mut-expr.rs:2:21
   |
LL |     let a_box = box mut 42; //~ ERROR expected expression, found keyword `mut`
   |                     ^^^ expected expression

error: aborting due to previous error