$f1 on_ready [list apply {{name future} {set $name [$future get]}} "[namespace current]::ready_args" ]
-$f1 retain
-
-$f1 await_ready
-
set my_host [exec hostname]
-is [$f1 get] $my_host "hostname retuend ok via get"
-
-$f1 free
+is [$f1 await_get] $my_host "hostname returned ok via get"
is $ready_args $my_host "hostname returned ok via on_ready"