rs_tracing

example traces generated with trace2html from catapult project

I only get the generated html to work in chrome

Example traces rustc initial incremental build on a 32 threads cpu

Example traces rustc build on a 32 threads cpu (CARGO_INCREMENTAL=0)

Example traces rustdoc on a 32 threads cpu

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
    /// # }
    /// ```