Error compiling v1.1.1 on Ubuntu 20.04

[sandakersmann]

Get this error while compiling:

Compiling validator_client v0.3.5 (/home/ethereum/git/lighthouse/validator_client)
error[E0658]: use of unstable library feature 'bool_to_option'
--> beacon_node/network/src/nat.rs:55:46
|
55 | interface.ip().is_ipv4().then(|| interface.ip())
| ^^^^
|
= note: see issue #64260 rust-lang/rust#64260 for more information

error: aborting due to previous error

For more information about this error, try rustc --explain E0658.
error: could not compile network

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: failed to compile lighthouse v1.1.1 (/home/ethereum/git/lighthouse/lighthouse), intermediate artifacts can be found at /home/ethereum/git/lighthouse/target

Caused by:
build failed
make: *** [Makefile:20: install] Error 101

_________________________________________________________________________________-

An unstable feature was used.

Erroneous code example:

#[repr(u128)] // error: use of unstable library feature 'repr128'
enum Foo {
    Bar(u64),
}

If you're using a stable or a beta version of rustc, you won't be able to use
any unstable features. In order to do so, please switch to a nightly version of
rustc (by using rustup).

If you're using a nightly version of rustc, just add the corresponding feature
to be able to use it:

#![feature(repr128)]

#[repr(u128)] // ok!
enum Foo {

[realbigsean]

@sandakersmann can you check what version of rust you are compiling with? rustc --version you'd get this error if you haven't updated to 1.50.0, which was recently released

[sandakersmann]

@realbigsean Thanks :) Updated Rust and now it works.