add new example to reprodue a rust issue

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

examples/lifetime_issue/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "lifetime_issue"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+rio_rt = { path = "../../rt"  }

examples/lifetime_issue/src/main.rs

@@ -0,0 +1,31 @@
+use rio_rt::runitime as rio;
+use std::future::Future;
+use std::io;
+use std::pin::Pin;
+use std::task::Context;
+use std::task::Poll;
+
+pub struct AdaptorFuture<F> {
+    inner: F,
+}
+
+impl<F, T> Future for AdaptorFuture<F>
+where
+    F: Future<Output = T>,
+{
+    type Output = Result<T, io::Error>;
+
+    fn poll(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Self::Output> {
+        panic!()
+    }
+}
+
+fn call<R>(req: R) -> AdaptorFuture<R> {
+    AdaptorFuture {
+        inner: req,
+    }
+}
+
+fn main() {
+    rio::block_on(async { call(1); })
+}