Build Instructions Failed

When I compile Microsoft Edit repository I receive the following error:

~/Downloads/edit$ cargo build --config .cargo/release.toml --release
Compiling edit v1.0.0 (/home/robert/Downloads/edit)
error[E0554]: #![feature] may not be used on the stable release channel
--> src/lib.rs:4:1
|
4 | / #![feature(
5 | | allocator_api,
6 | | breakpoint,
7 | | cold_path,
... |
14 | | os_string_truncate
15 | | )]
| |__^

For more information about this error, try rustc --explain E0554.
error: could not compile edit (lib) due to 1 previous error

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I am running Linux Mint 22.1

I installed Rust:
~/Downloads/edit$ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
~/Downloads/edit$ rustup install nightly

I tried to compile Edit:
~/Downloads/edit$ cargo build --config .cargo/release.toml --release

Failed to compile as shown above.

What is the correct procedure to compile Microsoft Edit?
Perhaps the Build Instructions need to be updated?

Start by reading the repository's build instructions and checking the documented toolchain against the failing cargo build command using .cargo/release.toml; the error points to the feature declarations in src/lib.rs. Reproduce the stable-channel error, document the correct procedure, and verify the instructions with the reported command.