The code:

```
Url::parse("http://[]")
```

The panic:

```
thread '<main>' panicked at 'index out of bounds: the len is 0 but the index is 0',
/Users/coreyf/.cargo/registry/src/github.com-1ecc6299db9ec823/url-0.2.34/src/host.rs:104
```

in addition to:

The code:

```
Url::parse("http://[:]")
```

The panic:

```
/Users/coreyf/.cargo/registry/src/github.com-1ecc6299db9ec823/url-0.2.34/src/host.rs:104
thread 'tests::url_parsing' panicked at 'index out of bounds: the len is
1 but the index is 1', src/host.rs:110
```

Was found using https://github.com/kmcallister/afl.rs 👍