Errors compiling release build due to strip cargo feature

[mnussbaum]

Hi there, it looks like the strip Cargo feature was enabled, but this is causing some build time errors since that feature is only available on nightly, and is gated even there. When I compile with the --release flag on Cargo 1.58.0, with nightly enabled, I get the following:

$ RUSTUP_TOOLCHAIN=nightly cargo build --frozen --release --all-features
error: failed to parse manifest at `/home/mnussbaum/src/rot8/Cargo.toml`

Caused by:
  feature `strip` is required

  The package requires the Cargo feature called `strip`, but that feature is not stabilized in this version of Cargo (1.58.0-nightly (ad50d0d26 2021-11-17)).
  Consider adding `cargo-features = ["strip"]` to the top of Cargo.toml (above the [package] table) to tell Cargo you are opting in to use this unstable feature.
  See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#profile-strip-option for more information about the status of this feature.

[efernau]

If I see this correctly, it has been stabilized in the 1.59 release, isn't it? what would be your suggestion otherwise? feel free to make a pull request.