Constant OTHER_RUST_ERROR 

pub const OTHER_RUST_ERROR: &str = "other_rust_error";

Fallback kind written by super::make_rust_condition_value when the caller’s kind argument contained an interior NUL and could not be converted to a CString. Should not appear in normal flow; the match arm in [crate::condition::RCondition::from_sexp] handles it defensively by degrading to RCondition::Error.