message: Add missing unstable feature gates
diff: @@ -14,11 +14,11 @@ use zeroize::Zeroize;
  use crate::{
  error::Error,
  format::{ssh_ed25519, x25519, RecipientLine},
  - openssh::{EncryptedOpenSshKey, SSH_ED25519_KEY_PREFIX, SSH_RSA_KEY_PREFIX},
  + openssh::{EncryptedOpenSshKey, SSH_ED25519_KEY_PREFIX},
  };
  #[cfg(feature = "unstable")]
  -use crate::format::ssh_rsa;
  +use crate::{format::ssh_rsa, openssh::SSH_RSA_KEY_PREFIX};
  // Use lower-case HRP to avoid https://github.com/rust-bitcoin/rust-bech32/issues/40
  const SECRET_KEY_PREFIX: &str = "age-secret-key-";
  @@ -556,6 +556,7 @@ AAAEADBJvjZT8X6JRJI8xVq/1aU8nMVgOtVnmdwqWwrSlXG3sKLqeplhpW+uObz5dvMgjz
  assert_eq!(key.to_public().to_string(), TEST_PK);
  }
  + #[cfg(feature = "unstable")]
  #[test]
  fn ssh_rsa_encoding() {
  let pk: RecipientKey = TEST_SSH_RSA_PK.parse().unwrap();
  