Build : error[E0554]: `#![feature]` may not be used on the stable release channel
try to build on Ubuntu 16.04:
Compiling bruteforce v0.2.0
error[E0554]: `#![feature]` may not be used on the stable release channel
--> /home/poka/.cargo/registry/src/github.com-1ecc6299db9ec823/bruteforce-0.2.0/src/lib.rs:4:1
|
4 | / #![feature(
5 | | const_fn,
6 | | test,
7 | | generators,
... |
11 | | proc_macro_hygiene
12 | | )]
| |__^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0554`.
error: could not compile `bruteforce`.
To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed