For rust, even with all tests passing the test fails with this:

warning: unnecessary parentheses around assigned value, #[warn(unused_parens)] on by default
  --> src/tests.rs:30:27
   |
30 |         let dice_amount = (1 + seed % 10);
   |                           ^^^^^^^^^^^^^^^

It looks like a problem with test cases' code.

Looks like it can be bypassed with:

#![allow(unused_parens)]