Make toolchain.update async

Author: rbtcollins

src/cli/self_update.rs

@@ -869,7 +869,7 @@ fn maybe_install_rust(
             // - delete the partial install and start over
             // For now, we error.
             let mut toolchain = DistributableToolchain::new(&cfg, desc.clone())?;
-            toolchain.update(components, targets, cfg.get_profile()?)?
+            utils::run_future(toolchain.update(components, targets, cfg.get_profile()?))?
         } else {
             DistributableToolchain::install(
                 &cfg,

src/config.rs

@@ -798,11 +798,11 @@ impl Cfg {
             }
             Ok(mut distributable) => {
                 if !distributable.components_exist(&components, &targets)? {
-                    distributable.update(
+                    utils::run_future(distributable.update(
                         &components,
                         &targets,
                         profile.unwrap_or(Profile::Default),
-                    )?;
+                    ))?;
                 }
                 distributable
             }

src/toolchain/distributable.rs

@@ -372,13 +372,14 @@ impl<'a> DistributableToolchain<'a> {
     }
 
     #[cfg_attr(feature = "otel", tracing::instrument(err, skip_all))]
-    pub(crate) fn update(
+    pub(crate) async fn update(
         &mut self,
         components: &[&str],
         targets: &[&str],
         profile: Profile,
     ) -> anyhow::Result<UpdateStatus> {
-        utils::run_future(self.update_extra(components, targets, profile, true, false))
+        self.update_extra(components, targets, profile, true, false)
+            .await
     }
 
     /// Update a toolchain with control over the channel behaviour