error: `limit` must be a non-negative integer --> $DIR/invalid_digit.rs:3:1 | LL | #![recursion_limit = "-100"] | ^^^^^^^^^^^^^^^^^^^^^------^ | | | not a valid integer error: `limit` must be a non-negative integer --> $DIR/invalid_digit.rs:3:1 | LL | #![recursion_limit = "-100"] | ^^^^^^^^^^^^^^^^^^^^^------^ | | | not a valid integer error: aborting due to 2 previous errors