This commit removes the env_logger dependency, replacing it with a simple implementation. Doing so removes like ten other transitive dependencies that no longer need to be included in the build.
It also gains the ability to enable trace-level logging. The users crate, which contains such logging statements as of the version I published a few days ago, has been upgraded to celebrate.
Also, change the log imports to globs. I'm only interested that a file doing logging, not what level it's logging at.
• Get rid of the 'fresh' VM. It just got in the way, taking up more memory when 'vagrant up' was used, and only solved one problem that was happening three years ago when I was at RustFest and in a programm-y mood.
• Use a more up-to-date Ubuntu image and give the machine more cores.
• Start moving some of the developer tools out of this repo. As I get more and more Rust projects, I don't want the scripts to package them to be repeated in each repository.
Again, it was hard to read and edit this text when it was in a string inside an echo command inside a bash script inside a heredoc inside a Ruby script wrapped in a mystery. It also gives me space to write some actual comments.
Having it all echo-ed into the file like that made it hard to read *and* hard to maintain. My initial aversion to it was that I didn’t want there to be an executable script in the main repository that only worked when you were in the VM, because people would just run it anyway. But this can be avoided by leaving it non-executable, and having a command in the VM that runs it instead.
