error: reduce-reduce conflict:
       state: expr -> Lit •
              expr -> Minus Lit •
       token: EOF
  --> tests/ui/reduce_reduce.rs:27:9
   |
27 |         Minus Lit(i) => Expr::Lit(-i),
   |         ^^^^^^^^^^^^^^^

error: this is the conflicting rule
  --> tests/ui/reduce_reduce.rs:21:9
   |
21 |         Lit(i) => Expr::Lit(i),
   |         ^^^^^^^^^