feat: Nicer configuration error (#6684)

src/configure.rs

@@ -485,7 +485,10 @@ async fn configure(ctx: &Context, param: &EnteredLoginParam) -> Result<Configure
     let configuring = true;
     let mut imap_session = match imap.connect(ctx, configuring).await {
         Ok(session) => session,
-        Err(err) => bail!("{}", nicer_configuration_error(ctx, err.to_string()).await),
+        Err(err) => bail!(
+            "{}",
+            nicer_configuration_error(ctx, format!("{err:#}")).await
+        ),
     };
 
     progress!(ctx, 850);

src/imap.rs

@@ -348,10 +348,11 @@ impl Imap {
                 connection_candidate,
             )
             .await
+            .context("IMAP failed to connect")
             {
                 Ok(client) => client,
                 Err(err) => {
-                    warn!(context, "IMAP failed to connect: {err:#}.");
+                    warn!(context, "{err:#}.");
                     first_error.get_or_insert(err);
                     continue;
                 }