example traces generated with trace2html from catapult project
I only get the generated html to work in chrome
this is the code that is tested in rustdoc and the example is repeated 42 times
/// ```
/// let five = 5;
///
/// assert_eq!(6, add_one(5));
/// # fn add_one(x: i32) -> i32 {
/// # x + 1
/// # }
/// ```