The level of logging for Trace should not be locked to Info.

It should be possible to explicitly set the level on Trace. (Imagine Info is turned off and a failure mode where you really want to know the time it took to recover).

I initially thought I could do it with the Level field in Entry, but it's never honored.

The reason this is an issue, not a PR, is that this is a great library and I defer to the core team on how to handle this.
That said, for this issue I'd just add a new TraceAt that took the level in, and modify the base Trace and Stop to use the Level field in Entry.