log-termination
===============

Provides an attribute proc macro for your `fn main() -> Result<(), Box<dyn Error>>`
which sends returned errors to `log::error!`.

```rust
#![feature(try_trait)]
#![feature(termination_trait_lib)]

use log_termination::log_termination;

#[log_termination]
fn main() -> Result<(), Box<dyn std::error::Error>> {
  // set up logging, e.g. fern

  std::fs::metadata("non-existing-file")?;
  // will call log::error!("No such file or directory (os error 2)") before exiting
}
```