message: fmt cargo-miri
diff: @@ -528,7 +528,8 @@ fn phase_cargo_miri(mut args: env::Args) {
  Some("run") => MiriCommand::Run,
  Some("setup") => MiriCommand::Setup,
  // Invalid command.
  - _ => show_error(format!(
  + _ =>
  + show_error(format!(
  "`cargo miri` supports the following subcommands: `run`, `test`, and `setup`."
  )),
  };
  @@ -1086,7 +1087,8 @@ fn main() {
  ));
  }
  }
  - _ => show_error(format!(
  + _ =>
  + show_error(format!(
  "`cargo-miri` called without first argument; please only invoke this binary through `cargo miri`"
  )),
  }
  