Ayende Rahien made an illustrative code review series of LMDB in 2013, particularly good due to its author Howard Chu's responses: https://ayende.com/blog/posts/series/162754/reviewing-lightn...

Some excellent ones here:

http://fabiensanglard.net/

Mostly video game related.

Relevant to the discussion but not exactly code reviews is 'The Architecture Of Open Source Applications' - http://aosabook.org/en/index.html

I don't know any about Rust, but indeed Fabien has a really good one about game engines.