Simplify doc tests with results

Since Rust 1.34.0, we no longer need a `fn main` comment in doc tests
that return results.  It is sufficient to have an `Ok` return value with
type annotations.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/device/mod.rs b/src/device/mod.rs
index af28ab5..5e15f08 100644
--- a/src/device/mod.rs
+++ b/src/device/mod.rs
@@ -78,13 +78,11 @@ pub trait Device<'a>: Authenticate<'a> + GetPasswordSafe<'a> + GenerateOtp + fmt
     ///     // ...
     /// }
     ///
-    /// # fn main() -> Result<(), nitrokey::Error> {
     /// match nitrokey::take()?.connect() {
     ///     Ok(device) => do_something(device),
     ///     Err(err) => println!("Could not connect to a Nitrokey: {}", err),
     /// }
-    /// #     Ok(())
-    /// # }
+    /// # Ok::<(), nitrokey::Error>(())
     /// ```
     fn into_manager(self) -> &'a mut crate::Manager;