clang_log
I really like the logging format of clang (pronounced klang, not C-lang), so I recreated it as an implementation of the log crate. It's licensed under the MIT license, and you can use it as you like. Use it, fork it, steal the code and sell it, I don't really care. If you find bugs, first of all, good job, because how can a logging implementation have bugs, and second of all, you can submit them to the issue tracker, or fix them and submit a PR. Additionally, if you want to improve clang_log, go ahead and waste five minuites writing a PR to change something.