cargo install airshipper fails
$ cargo install airshipper
# ... nb. lots of successful compiling here...
error[E0554]: `#![feature]` may not be used on the stable release channel
--> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/airshipper-0.11.0/src/main.rs:1:1
|
1 | #![feature(async_closure)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0554]: `#![feature]` may not be used on the stable release channel
--> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/airshipper-0.11.0/src/main.rs:2:1
|
2 | #![feature(let_chains)]
| ^^^^^^^^^^^^^^^^^^^^^^^
error[E0554]: `#![feature]` may not be used on the stable release channel
--> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/airshipper-0.11.0/src/main.rs:3:1
|
3 | #![feature(const_fn_floating_point_arithmetic)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
For more information about this error, try `rustc --explain E0554`.
error: could not compile `airshipper` (bin "airshipper") due to 3 previous errors
error: failed to compile `airshipper v0.11.0`, intermediate artifacts can be found at `/tmp/cargo-installjnD7df`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.