$ cargo run
Finished dev [unoptimized + debuginfo] target(s) in 0.25s
Running `/Users/jrmuizel/src/glow/target/debug/howto`
thread 'main' panicked at 'ERROR: 0:1: '' : version '130' is not supported
ERROR: 0:2: '' : #version required and missing.
', examples/howto/src/main.rs:86:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace