I'm getting this from the compiler when trying to run my code:

error[E0432]: unresolved import `super::make_readable`
  --> src/lib.rs:12:9
   |
12 |     use super::make_readable;
   |         ^^^^^^^^^^^^^^^^^^^^ no `make_readable` in the root

For more information about this error, try `rustc --explain E0432`.
error: could not compile `challenge` due to previous error


NOTE: Line numbers in error messages can be incorrect due to concatenation.

looks like there is an issue with an import that requires fixing.

In rust margin is not optional, which makes this kata a bit confusing as dealing with it as an optional argument won't compile.

hmm seems like I messed something up on my side then, sorry!

There is an error in the python implementation. One of the test cases throws the error 'positional argument missing'. It looks like the input string got deleted. It only affects the tests not the attempts.