The parser can panic if it tries to slice a string within char boundaries.
thread '<unnamed>' panicked at 'byte index 58198 is not a char boundary; it is inside '\u{a0}'
...
/root/.cargo/registry/src/github.com-1ecc6299db9ec823/robotstxt-0.3.0/src/parser.rs:169:57
The parser can panic if it tries to slice a string within char boundaries.