cargo-mutants VS elite

Hi Rusty!

For a later hack in the same vein, check out https://github.com/sourcefrog/cargo-mutants

cargo-mutants got a couple of releases over the weekend, fixing some environment-triggered bugs on Windows and Linux ecryptfs, and adding a better overall progress indicator (demo: https://asciinema.org/a/481375). It is getting better at avoiding uninteresting or pointless mutations, although there's a lot more to do there, and at printing function name paths well.

While working on Conserve and cargo-mutants I felt that existing Rust progress-bar libraries like Indicatif didn't give me enough control of how the bar was drawn, or at least I was working around them to insert my own text. For example, I wanted to draw several counters into a single line, and it seems like the only way to do that is to just push in a text string.

Continuing with some fast-follow enhancements in cargo-mutants in response to user feedback: for example doctests are typically slow and in some trees not important for coverage, so you can now skip them.

I got cargo-mutants to a state where I felt I could announce it and ask for public feedback.

There's also a build system, called elite has a bunch of transpile back-ends. Such as Rust, C++, Python, Bash etc. İt's quitely interesting because one is interpreted and one is compiled. I think Python version is most important one to using it instead of SCons maybe.

It has runtime scripting language based on Elite (click) generics, variadics, compile-time statements, variables and Its STL contains C++ functions from FFI.