error: arbitrary expressions aren't allowed in patterns
  --> $DIR/patkind-litrange-no-expr.rs:20:13
   |
LL |     Arith = 1 + 1,
   |             ^^^^^

error[E0029]: only char and numeric types are allowed in range patterns
  --> $DIR/patkind-litrange-no-expr.rs:20:13
   |
LL |     Arith = 1 + 1,
   |             ^^^^^ ranges require char or numeric types
   |
   = note: start type: {integer}
   = note: end type: {integer}

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0029`.