Multiple identical IDs in generated HTML

[Jayman2000]

Describe the bug
The about.hbs file in this repo causes invalid HTML to be generated. Specifically, it causes cargo-about generate to create multiple elements with the same ID.

To Reproduce
Steps to reproduce the behavior:

1. cd into a clone of the cargo-about repo.
2. Run cargo run -- generate --output-file test.html about.hbs
3. Open test.html in a text editor and inspect the results. Notice how there’s multiple elements with id="Apache-2.0".

Expected behavior
test.html should contain valid HTML. Specifically, it should not contain more than one element with the same ID.

Screenshots

Device:

• OS: NixOS 24.05
• Browser Cargo version: 1.77.1

Additional context
Here’s the part of the HTML Standard that forbids multiple identical IDs:

When specified on HTML elements, the id attribute value must be unique amongst all the IDs in the element's tree and must contain at least one character.