message: fix(build): rustc check emoji and fix
diff: @@ -11,7 +11,7 @@ use PBAR;
  /// Ensure that `rustc` is present and that it is >= 1.30.0
  pub fn check_rustc_version(step: &Step) -> Result<String, Error> {
  - let msg = format!("{}Checking `rustc` version...", emoji::TARGET);
  + let msg = format!("{}Checking `rustc` version...", emoji::CRAB);
  PBAR.step(step, &msg);
  let local_minor_version = rustc_minor_version();
  match local_minor_version {
  @@ -44,7 +44,7 @@ fn rustc_minor_version() -> Option<u32> {
  }
  };
  }
  - let rustc = otry!(env::var_os("RUSTC"));
  + let rustc = otry!(env::var_os("RUSTC").unwrap_or(|| "rustc".into())); // updated because we are not in a build script
  let output = otry!(Command::new(rustc).arg("--version").output().ok());
  let version = otry!(str::from_utf8(&output.stdout).ok());
  let mut pieces = version.split('.');
  