Url parsing slow

[joepio]

The url::Url::parse() function seems to be extremely slow. Find the bug, or get rid of the library.

Maybe switch to this one: https://github.com/yescallop/fluent-uri-rs

Edit: most of this was due to a tracing statement which cloned a bunch of things. However, even correcting for that, url is still pretty slow. About 300ns for parsing + modifying query params.