From 3d9b98f1df060343fac6c12d764faec5b20ea9ef Mon Sep 17 00:00:00 2001
From: Pat Hickey <pat@moreproductive.org>
Date: Thu, 6 May 2021 14:34:30 -0700
Subject: [PATCH] fix example

---
 Cargo.lock                                 | 2 +-
 crates/wasi-common/cap-std-sync/Cargo.toml | 2 +-
 examples/tokio/main.rs                     | 5 ++---
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 6ba3fe8586..2f98977231 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3135,6 +3135,7 @@ name = "wasi-cap-std-sync"
 version = "0.26.0"
 dependencies = [
  "anyhow",
+ "async-trait",
  "bitflags",
  "cap-fs-ext",
  "cap-rand",
@@ -3148,7 +3149,6 @@ dependencies = [
  "tracing",
  "unsafe-io",
  "wasi-common",
- "wiggle",
  "winapi",
 ]
 
diff --git a/crates/wasi-common/cap-std-sync/Cargo.toml b/crates/wasi-common/cap-std-sync/Cargo.toml
index 46b2dd6976..eab62d0721 100644
--- a/crates/wasi-common/cap-std-sync/Cargo.toml
+++ b/crates/wasi-common/cap-std-sync/Cargo.toml
@@ -13,7 +13,7 @@ include = ["src/**/*", "LICENSE" ]
 
 [dependencies]
 wasi-common = { path = "../", version = "0.26.0" }
-async_trait = "0.1"
+async-trait = "0.1"
 anyhow = "1.0"
 cap-std = "0.13.7"
 cap-fs-ext = "0.13.7"
diff --git a/examples/tokio/main.rs b/examples/tokio/main.rs
index b8b0548953..491fe754db 100644
--- a/examples/tokio/main.rs
+++ b/examples/tokio/main.rs
@@ -155,9 +155,8 @@ async fn _run_wasm(inputs: Inputs) -> Result<(), Error> {
     // Instantiate
     let instance = linker.instantiate_async(&inputs.env.module).await?;
     instance
-        .get_typed_func("_start")
-        .ok_or_else(|| anyhow!("wasm is a wasi command with export _start"))?
-        .call_async(&[])
+        .get_typed_func::<(), ()>("_start")?
+        .call_async(())
         .await?;
 
     Ok(())