Certain characters are printed as HTML values rather than real characters

[vertexmachina]

I'm building a map like this:

let data = mustache::MapBuilder::new()
    .insert_str("test", "<test_&_string<")
    .build();

And the generated string looks like this:

<test_&_string<

instead of like this:

<test_&_string>

I'm not sure if this is a bug or if there is a configuration of the builder that I'm missing.

[vertexmachina]

Closed upon realizing this is from the mustache spec. Using triple mustaches avoids the issue.