Ripgrep: Attempting to install with --features unstable

[ianks]

Based on the README, I am trying to install ripgrep through cargo to get simd accelleration, but am met with this error:

cargo install ripgrep --features unstable
    Updating registry `https://github.com/rust-lang/crates.io-index`
 Downloading ripgrep v0.8.1                                                     
  Installing ripgrep v0.8.1                                                     
error: failed to compile `ripgrep v0.8.1`, intermediate artifacts can be found at `/tmp/cargo-installhiwOF5`

Caused by:
  Package `ripgrep v0.8.1` does not have these features: `unstable`

Not sure if I am doing something wrong, or if the readme needs to be updated.

rustc --version
rustc 1.28.0-nightly (1d4dbf488 2018-06-11)

cargo --version
cargo 1.28.0-nightly (e2348c2db 2018-06-07)

[BurntSushi]

The README is correct, but it refers to current master, which isn't released. If you want installation instructions for 0.8.1 (including how to enable SIMD), then see the README for 0.8.1.

[BurntSushi]

(You could also do cargo install --git https://github.com/BurntSushi/ripgrep I think, and the current README will work.)